37th week of 2022 patent applcation highlights part 72 |
Patent application number | Title | Published |
20220294325 | STATE-CHANGE ROTATIONAL MAGNETIC FIELD TENSOR ENERGY HARVESTING GENERATOR - The present disclosure is of energy harvesting generators producing power to electrical loads by a novel method of a “state-change” tensor component of the magnetic field intensity of a Neodymium spherical magnet; and the accumulative directional Lorentz Force created by a moving high permeability magnetic steel toroid bi-directional guide that causes multi degrees of rotational freedom on the spherical Neodymium magnet. This action of the “state-change” Lorentz Force tensor, is caused by a sudden “state-change” in the position of the moving high permeability magnetic steel toroid, when the spherical Neodymium magnet is surrounded by an electric coil. This action produces an induced current to flow when the coil is connected to an electric load, and this action produces a voltage drop across the electric load. | 2022-09-15 |
20220294326 | MAGNETIC GUIDING DEVICE - The present invention relates to a magnetic guiding device having a stator and a slide movable along a guiding direction relative to the stator, the stator and the slide being magnetized or magnetizable such that a magnetic field extending through the stator and the slide generates a magnetic supporting force on the slide acting along the guiding direction. To improve the running properties of the slide by avoiding differential slip, jerking and varying friction, according to the invention, the magnetic field extending through the stator and the slide simultaneously generates a magnetic pretensioning force which urges the slide and the stator against each other. | 2022-09-15 |
20220294327 | MAGNETIC COUPLER WITH FORCE BALANCING - A magnetic coupling system and a method of balancing a magnetic coupler are provided. The magnetic coupling system includes a follower magnet magnetically coupled to a drive magnet, and a magnetic balancing component located to a side of the follower magnet. Movement of the drive magnet induces corresponding movement of the follower magnet. The magnetic balancing component and the drive magnet exert attractive magnetic forces on the follower magnet in opposite directions. | 2022-09-15 |
20220294328 | DRIVE DEVICE HAVING DRIVE TRANSMISSION DEVICE - A drive transmission device includes a drive-side rotatable body, a plurality of magnetic conducting portions and a driven-side rotatable body. The drive-side rotatable body includes a plurality of magnetic poles arranged in a rotational direction. The magnetic conducting portions are magnetizable by the magnetic poles of the drive-side rotatable body. The driven-side rotatable body has a plurality of magnetic poles configured to be rotated in response to rotation of the magnetic poles of the drive-side rotatable body through the magnetic conducting portions. The drive transmission device is configured to be operated as a magnetic speed changer that changes a speed of rotation between the drive-side rotatable body and the driven-side rotatable body by differently setting the number of the magnetic poles of the drive-side rotatable body, the number of the magnetic conducting portions and the number of the magnetic poles of the driven-side rotatable body from each other. | 2022-09-15 |
20220294329 | METHOD FOR DETERMINING AN INTERMEDIATE CIRCUIT VOLTAGE - A method for determining an intermediate circuit voltage U | 2022-09-15 |
20220294330 | ADAPTIVE INDUCTOR DCR CURRENT SENSING CIRCUIT IN A SWITCHING CONVERTER AND ASSOCIATED METHOD - A DCR current sensing circuit used in a switching converter having a power switch and an inductor. The DCR current sensing circuit has a current sensing capacitor coupled in series with a current sensing resistor to form a RC circuit, a current mirror, a first and a second compensation circuits, wherein the RC circuit is coupled in parallel with the inductor. The current mirror generates a first mirror current signal and a second mirror current signal based on a voltage across the current sensing capacitor. The first compensation circuit receives the first mirror current signal and generates a first current sensing signal for meeting a first requirement of the switching converter. The second compensation circuit receives the second mirror current signal and generates a second current sensing signal for meeting a second requirement of the switching converter. | 2022-09-15 |
20220294331 | POWER SUPPLY AND POWER SAVING METHOD THEREOF - A power supply and a power saving method thereof are provided. The power saving method includes: utilizing a monitoring circuit within the power supply to generate a monitoring signal according to operating loading of the power supply; and utilizing a control signal generating circuit within the power supply to generate a control signal according to the monitoring signal, to drive at least two switch transistors within a circuitry within the power supply, wherein the switch transistors are connected in parallel. | 2022-09-15 |
20220294332 | COMPENSATING GAIN LOSS FOR A POWER CONVERTER IN DCM AND CCM - Various embodiments relate to a current loop controller configured to control a boost converter, including: an amplifier configured to scale a measured current; a subtractor configured to subtract the scaled measured current from a desired current and to output an error signal; a controller including an integral part and a proportional part configured to produce a control signal based upon the difference signal and a gain value, wherein the gain value is based upon a measured value t | 2022-09-15 |
20220294333 | ACTIVE NEUTRAL POINT CLAMPED SWITCH SEQUENCE FOR PARASITIC INDUCTANCE CONTROL OF A POWER CONVERSION ASSEMBLY - A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes providing a plurality of switching devices of the power converter in an active neutral point clamped topology. The method also includes operating the plurality of switching devices in a plurality of operating states such that current simultaneously flows through at least two parallel recovery paths of the plurality of switching devices during operation of the power converter to minimize a commutation path of the current when at least one diode of the plurality of switching devices recovers, thereby reducing parasitic inductance affecting the recovering antiparallel diode or the switch. | 2022-09-15 |
20220294334 | GATE DRIVING POWER SOURCE DEVICE - A gate driving power source device individually supplies a DC power source to a plurality of gate drive circuits provided for a power conversion device. The power conversion device includes a step-up/down converter and one or a plurality of AC/DC conversion circuits. The step-up/down converter includes a step-up/down upper arm switching element and a step-up/down lower arm switching element. The AC/DC conversion circuit includes an AC/DC upper arm switching element and an AC/DC lower arm switching element. The gate driving power source device includes a power source unit that supplies a shared DC power source to at least two of the step-up/down upper arm switching element, the step-up/down lower arm switching element, the AC/DC upper arm switching element, and the AC/DC lower arm switching element. | 2022-09-15 |
20220294335 | SIGNAL PROCESSOR, FILTER, CONTROL CIRCUIT FOR POWER CONVERTER CIRCUIT, INTERCONNECTION INVERTER SYSTEM AND PWM CONVERTER SYSTEM - A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G: | 2022-09-15 |
20220294336 | POWER SUPPLY SYSTEM AND CONTROL METHOD FOR POWER SUPPLY SYSTEM - A power supply system and a method for controlling the power supply system includes a direct current voltage conversion apparatus, an inverter, and a diode. The direct current voltage conversion apparatus includes a controller and a direct current voltage conversion circuit. The controller is configured to: control the output voltage of the direct current voltage conversion circuit, so that the diode is in a conducted state; detect a voltage on the direct current bus; and determine, based on the voltage on the direct current bus, whether high voltage ride-through occurs in the power supply system. According to the power supply system and the method for controlling the power supply system provided in this application, high voltage ride-through can be quickly detected while fault isolation is implemented, thereby improving efficiency of detecting high voltage ride-through. | 2022-09-15 |
20220294337 | INTEGRATED CIRCUIT AND METHOD OF DIGITALLY CONTROLING CRITICAL MODE POWER FACTOR CORRECTION CIRCUIT - An integrated circuit for digitally controlling a critical mode power factor correction (PFC) circuit according to one or more embodiments may include: an output voltage detector and a switching current detector; an A/D converter and a sample and hold circuit that perform analog-to-digital conversion of an output signal of the output voltage detector and the switching current detector; an arithmetic unit that performs calculation based on the output signal of the A/D converter and generates a pulse signal to turn on/off a switching device of the PFC circuit; a correction value calculator that calculates, based on a switching frequency of the PFC circuit, a correction value for linearly correcting the output signal of the A/D converter; and an adder that adds the correction value to the output signal of the A/D converter to correct the output signal of the A/D converter and inputs the corrected output signal to the arithmetic unit. | 2022-09-15 |
20220294338 | CHARGER FOR IN PLUG-IN ELECTRIC VEHICLES - A battery charger for an electric vehicle supplies DC output power to an output bus for supplying power to a battery. The battery charger includes an AC/DC converter using switches to convert AC power from an AC source to a DC link voltage upon a DC link bus. A DC link capacitor allows a ripple in the DC link voltage that is greater than in conventional charger designs. A DC/DC stage includes a DC/AC converter including one or more switches to selectively conduct current from the DC link bus to supply an AC power to a transformer. The switches of the DC/AC converter are mounted to an insulated metal substrate that is in thermal contact with a transformer housing for dissipating heat therefrom. A controller controls one or more switches of the DC/AC converter and varies a switching frequency responsive to the ripple of the DC link voltage. | 2022-09-15 |
20220294339 | POWER CONVERSION MODULE AND MAGNETIC DEVICE THEREOF - A magnetic device includes a magnetic core assembly, a first winding and a second winding. The magnetic core assembly includes four magnetic legs and two winding grooves. An input terminal of the first winding is disposed within a first part of the first winding groove between the first magnetic leg and the second magnetic leg. An output terminal of the first winding is disposed within a second part of the second winding groove between the third magnetic leg and the fourth magnetic leg. An input terminal of the second winding is disposed within a first part of the second winding groove between the first magnetic leg and the fourth magnetic leg. An output terminal of the second winding is disposed within a second part of the first winding groove between the second magnetic leg and the third magnetic leg. | 2022-09-15 |
20220294340 | VOLTAGE REGULATION MODULE, CHARGING MODULE, AND CHARGING PILE - This application discloses a voltage regulation module, a charging module, and a charging pile that may be used to charge an electric vehicle, to regulate an output voltage in a wide range, and implement seamless switching without power-off in a process of switching from a low-voltage output state to a high-voltage output state. The voltage regulation module includes a first DC/DC converter group and a second DC/DC converter group. Both a parallel circuit and a series circuit exist between the first DC/DC converter group and the second DC/DC converter group. In addition, a controllable switch group is disposed in each of the series circuit and the parallel circuit, and a semiconductor power transistor group is connected in parallel with two terminals of each controllable switch group. | 2022-09-15 |
20220294341 | BOOSTER CIRCUIT - A booster circuit includes a boost converter configured to boost an input voltage and performs feedback control such that an output voltage becomes a set value on the basis of a voltage applied to a feedback terminal and an internal feedback reference voltage, a power supply unit configured to generate a reference voltage with a smaller error than the feedback reference voltage, and a control unit configured to compare a voltage corresponding to the output voltage of the boost converter with the reference voltage, and configured to output a control signal indicating a comparison result to the feedback terminal of the boost converter. | 2022-09-15 |
20220294342 | POWER VOLTAGE GENERATOR AND DISPLAY DEVICE HAVING THE SAME - A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal. | 2022-09-15 |
20220294343 | DIGITAL CONTROLLER FOR HIGH-PERFORMANCE MULTIPHASE VRM WITH CURRENT BALANCING AND NEAR-IDEAL TRANSIENT RESPONSE - A mixed-signal controller for controlling a multiphase average-current-mode voltage regulator having an output connected to a load, which comprises a digital voltage-sampling ADC for converting the output voltage signal from analog to digital representation; a digital current-sampling ADC, for converting the inductor current from analog to digital representation; a digital compensator for generating a current reference signal, based on a digital voltage error signal and for generating a duty-ratio command signal, based on a digital current error signal; a multiphase Digital Pulse Width Modulator (DPWM), for generating a pulse-width-modulated signal (per-phase), to thereby control the per-phase currents and output voltage supplied to the load; an analog front-end, in which single-ended signals are used for steady-state control via ADC measurement and the single-ended output voltage is used for transient detection and output voltage extremum detection during transient; a Transient Suppression Unit (TSU), for generating gating signals being fed to the gates of the converter's transistors during a transient event; a Phase Count Optimizer (PCO) unit generating an enable/disable control signal to each phase PWM output tri-state buffer; an Active Voltage Positioning (AVP) unit for generating the voltage loop compensator voltage reference signal. | 2022-09-15 |
20220294344 | SWITCHING CONVERTER CONTROL LOOP AND DYNAMIC REFERENCE VOLTAGE ADJUSTMENT - A controller includes: a pulse-width modulation (PWM) circuit; a control loop; and a reference voltage controller. The control loop has: a feedback input adapted to be coupled to an output voltage of a power stage; a control loop output coupled to a PWM control input; and an operational amplifier with a first feedback input, a first reference input, and an amplifier output, the first feedback input connected to the feedback input, and the amplifier output coupled to the PWM control input. The reference voltage controller has a reference voltage output coupled to the first reference input, the reference voltage controller configured to adjust a reference voltage provided to the reference voltage output responsive to a dynamic error estimate based on error in the operational amplifier. | 2022-09-15 |
20220294345 | DC-DC CONVERTER AND VEHICLE - A DC-DC converter outputs a DC output voltage between first and second output terminals, and includes: a conversion circuit that outputs an intermediate voltage obtained by performing power conversion on an input voltage, between first and second intermediate terminals; a first coil provided between the first intermediate terminal and the first output terminal; and a diode provided in series with a second coil. A DC voltage is applied to the second coil and the diode, with a polarity in a direction in which a reverse bias is applied to the diode. The first coil and the second coil are magnetically coupled such that a current is made flow through the second coil in a forward direction of the diode by mutual induction as a current flowing through the first coil in a direction from the first intermediate terminal to the first output terminal increases. | 2022-09-15 |
20220294346 | A SWITCHED POWER CONVERTER FOR CONVERTING A DC SUPPLY VOLTAGE TO MULTIPLE BALANCED DC OUTPUT VOLTAGES - An electrically switched power converter ( | 2022-09-15 |
20220294347 | Boost Converter and Control Method - A multi-level converter includes a first blocking device, a second blocking device, a first switching element and a second switching element connected in series between an output terminal of the multi-level converter and ground, a first soft switching apparatus comprising a first auxiliary switch and a first transformer, wherein the first auxiliary switch and the first transformer are configured the first switching element is of zero voltage switching, and the first auxiliary switch is of zero current switching, and a second soft switching apparatus comprising a second auxiliary switch and a second transformer, wherein the second auxiliary switch and the second transformer are configured the second switching element is of zero voltage switching, and the second auxiliary switch is of zero current switching. | 2022-09-15 |
20220294348 | SWITCHING REGULATOR CONTROL CIRCUIT AND DC/DC CONVERTER - Provided is a DC/DC converter capable of providing overvoltage protection reliably without being affected by, for example, an external element connected to an output terminal. The DC/DC converter includes a comparator, an RS-FF circuit, a drive circuit, and an ON-timer circuit, and the ON-timer circuit includes: a current source circuit which provides an electric current based on a power supply voltage; a ripple generation circuit which generates a ripple voltage; an averaging circuit which averages the ripple voltage; a timer circuit which generates an ON-timer signal; and an overvoltage protection circuit (clamp circuit). | 2022-09-15 |
20220294349 | SWITCHING POWER SUPPLY DEVICE - A switching power supply device includes first to fourth switches sequentially connected in series, an inductor, a first capacitor whose first end is connected to a connection node of the first switch and the second switch and whose second end is connected to a connection node of the third switch, the fourth switch, and the inductor, a second capacitor whose first end is connected to a connection node of the second switch and the third switch, and a controller that controls switching on and off of the first to fourth switches. In at least one of a first pair configured with the first switch and the third switch and a second pair configured with the second switch and the fourth switch, the controller shifts a timing of switching from off to on between two switches. | 2022-09-15 |
20220294350 | SWITCHING POWER SUPPLY - An error detector generates an error signal that corresponds to an error between a feedback signal based on an output of a switching power supply and a target value thereof. A compensator generates a control instruction such that the error signal approaches zero. A pulse modulator generates a pulse signal that corresponds to the control instruction. An auto-tuner automatically optimizes a parameter that defines a response characteristic of the compensator. A degradation estimator generates information with respect to the degradation of an output capacitor of the switching power supply based on the parameter thus automatically optimized. | 2022-09-15 |
20220294351 | BUCK-BOOST CIRCUIT AND CONTROL METHOD - A buck-boost circuit is provided. A first terminal of a first switch is connected to an anode of an input power supply, a first terminal of a second switch is connected to an anode of an output power supply, a first terminal of a third switch and a first terminal of a first inductor are connected to a second terminal of the first switch, a first terminal of a fourth switch is connected to a second terminal of the first inductor and a second terminal of the second switch, a fifth switch is connected between the input power supply and the output power supply, and a first terminal of a first capacitor is connected to the anode of the output power supply, and a second terminal of the first capacitor is connected to the anode and a cathode of the input power supply through switches, respectively. | 2022-09-15 |
20220294352 | SYSTEM AND METHOD TO BOOST LIGHT LOAD EFFICIENCY FOR MULTIPHASE CONVERTERS - A method for boosting light load efficiency for multiphase converters through disabling at least partially a current sense circuit, disabling partial equivalent elements of one of power stages, using small size equivalent element for one of power stages, and through utilizing higher inductance, compared to other regular phases, to reduce RMS current. | 2022-09-15 |
20220294353 | PARALLEL BRANCHED RESONANT CONVERTER - This disclosure describes systems, methods, and apparatus for driving a plurality of output circuits from a DC input signal using a resonant converter, the resonant converter comprising a switch network, a resonant tank, and a rectifier network, the resonant tank comprising: a resonant capacitor bridge coupled across the switch network; a plurality of branches, each branch comprising at least one series inductor coupled at a first end to the resonant capacitor bridge and at a second end to the rectifier network; and at least one parallel inductor; the rectifier network comprising one or more groups of transformers, each group coupled to one branch of the plurality of branches, and wherein the primary windings of the transformers of each group are coupled in parallel, and wherein the secondary windings are configured for coupling to an output load. | 2022-09-15 |
20220294354 | RESONANT CONTROL DEVICE AND RESONANT CONTROL METHOD THEREOF - A resonant control device and a resonant control method thereof is provided. The resonant control device includes a feedback controller and a processor. The feedback controller receives a reference voltage and an output voltage and use the reference voltage to perform voltage compensation on the output voltage to generate a control parameter. The processor generates pulse modulation signals according to the control parameter and a switching parameter and uses the pulse modulation signals to drive the resonant converter to regulate the output voltage. The pulse modulation signal has the maximum frequency and the minimum frequency. The pulse modulation signals control the frequency according to the control parameter and the switching parameter when the control parameter is larger than or equal to the switching parameter. Otherwise, the pulse modulation signals control the resonant converter to operate for a fixed period within each cycle of the pulse modulation signal. | 2022-09-15 |
20220294355 | SYSTEMS AND METHODS FOR CONTROLLING GATE VOLTAGE INCREASE ON PRIMARY SIDE TO REDUCE VOLTAGE SPIKE ON SECONDARY SIDE OF SWITCHING POWER SUPPLIES - Controller and method for a switching power supply. For example, a controller for a switching power supply includes: a first terminal configured to receive a feedback voltage representing an output voltage associated with a secondary winding of the switching power supply; a second terminal configured to output a drive voltage to a first transistor associated with a primary winding coupled to the secondary winding of the switching power supply; a comparator configured to receive the feedback voltage and a predetermined feedback threshold and generate a comparison signal based at least in part on the feedback voltage and the predetermined feedback threshold; a pulse-width detector configured to detect a pulse width of the drive voltage during a first switching cycle, compare the detected pulse width with a predetermined time threshold, and generate a detection signal based at least in part on the detected pulse width and the predetermined time threshold. | 2022-09-15 |
20220294356 | POWER SUPPLY APPARATUS WITH SMOOTHING CAPACITOR AND IMAGE FORMING APPARATUS - A power supply apparatus for converting an AC voltage supplied from a power supply to a DC voltage includes a rectification circuit, a smoothing capacitor, a transformer, a voltage dividing circuit, and controller. The AC voltage is rectified by the rectification circuit and smoothed by the smoothing capacitor. The switching circuit switches between a first state in which the smoothed voltage is supplied to a first winding of the transformer and a second state in which the smoothed voltage is not supplied to the first winding. The voltage dividing circuit divides the smoothed voltage to a divided voltage by a ratio which depends on whether the AC voltage is being input to the power supply apparatus, and the divided voltage is applied to the controller. The controller controls the switching of the switching circuit according to the divided voltage applied from the voltage dividing circuit. | 2022-09-15 |
20220294357 | STACKED CAPACITIVE COUPLED RESONANT DUAL ACTIVE BRIDGE DC-DC CONVERTER - Systems for stacked capacitive coupled resonant dual active bridge DC-DC converters are provided. Aspects include a first phase circuit topology comprising a power source and a power inverter circuit, a plurality of LC circuits comprising a first LC circuit and a second LC circuit, and a second phase circuit topology comprising a plurality of AC-DC converter circuits comprising a first AC-DC converter circuit and a second AC-DC converter circuit, wherein the first AC-DC converter circuit is in a parallel configuration with the second AC- DC converter circuit, wherein the first LC circuit couples the first phase circuit topology to the first AC-DC converter and wherein the second LC circuit couples the first phase circuit topology to the second AC-DC converter. | 2022-09-15 |
20220294358 | ASYMMETRICAL HALF-BRIDGE FLYBACK CONVERTER AND POWER SUPPLY SYSTEM - Embodiments of this application disclose an asymmetrical half-bridge flyback converter and a power supply system, to reduce a loss of the asymmetrical half-bridge flyback converter, and improve efficiency of the asymmetrical half-bridge flyback converter. The asymmetrical half-bridge flyback converter, including: a first power transistor, a second power transistor, a primary-side resonant capacitor, a transformer, a third power transistor, and a secondary-side resonant capacitor, where the first power transistor and the second power transistor are coupled to two terminals of a direct current power supply after being connected in series; and a primary side of the transformer is connected in parallel to two terminals of the first power transistor through the primary-side resonant capacitor, and a secondary side of the transformer is coupled to the third power transistor and the secondary-side resonant capacitor. | 2022-09-15 |
20220294359 | BRIDGELESS SINGLE-STAGE SINGLE-INDUCTOR MULTIPLE-OUTPUT (SIMO) AC-AC CONVERTER TOPOLOGY - Disclosed is an AC-AC power converter with multiple AC voltage output branches. The AC-AC power converter is bridgeless and contains only one power stage. The AC-AC power converter consists of only one inductor for power conversion and provides a current source for successively feeding multiple output branches one at a time. Each output branch can be selected by the corresponding switch and its resonant circuit turns the input current source into an AC power source. | 2022-09-15 |
20220294360 | POWER CONVERTER - The power converter includes a capacitor connected to a power conversion unit, and a busbar module having a busbar covered with a molded insulating resin. The busbar module includes a fixed portion provided integrally with the busbar module and fixed to a casing by a fastener. The fixed portion has a shape protruding toward the capacitor from the busbar when the busbar module and the capacitor are viewed in a height direction. The fixed portion is located between the busbar and the capacitor unit. | 2022-09-15 |
20220294361 | METHOD AND APPARATUS FOR DETECTING SHORT CIRCUIT OF INVERTER, AND INVERTER - A method and an apparatus for detecting a short circuit of an inverter, and an inverter are provided. A voltage of a common bus is increased when a plurality of boost circuits in the inverter are all in a non-working state, and after circuit parameters of input sides of all the plurality of boost circuits are detected, a boost circuit in which a diode is short-circuited in the plurality of boost circuits is further determined based on the circuit parameters of the input sides of the boost circuits. According to the method and the apparatus for detecting a short circuit of an inverter, and the inverter, circuit complexity of the inverter can be reduced, and circuit complexity of a photovoltaic power generation system including the inverter is reduced. | 2022-09-15 |
20220294362 | FLYING CAPACITOR-TYPE NPC THREE-LEVEL TOPOLOGY - A flying capacitor-type NPC three-level topology, comprising: two half-busbar capacitors and at least one bridge arm. The bridge arm comprises: a flying capacitor, two inner transistor units, two outer transistor units, and two clamping diodes, wherein the capacitance of the flying capacitor is greater than a specific value. Since the flying capacitor has a clamping effect on the two inner transistor units and the capacitance of the flying capacitor is large, voltage fluctuations of the flying capacitor would not cause overvoltage of switching transistors no matter what type of short circuit fault occurs, thereby preventing the switching transistor units from being damaged due to overvoltage and further improving the security of a circuit. | 2022-09-15 |
20220294363 | PARALLEL INVERTER DEVICE - Provided is a parallel inverter device with which, among inverter devices each including a DC/AC inverter and the like, control of a parallel operation accompanied with an increase in power capacity or the like can be easily performed without using a control line for connecting between the inverter devices. A parallel inverter device ( | 2022-09-15 |
20220294364 | POWER CONVERSION CONTROL DEVICE - An electrical power conversion control device of an electric automotive vehicle is obtained which is small in size and inexpensive with lower electric current consumption. In the power conversion control device, insulating power sources are each connected to gate drive circuits to form respective pairs therebetween; electric power whose voltage is regulated as a constant voltage by way of a constant-voltage circuit is supplied from a low-voltage battery to a low-voltage side of an insulating communications circuit, and a high-voltage side of the insulating communications circuit is operated by an insulating power source being at least one insulating power source among the insulating power sources; and a signal of a voltage of a high-voltage battery is insulated from the high-voltage side of the insulating communications circuit and transmitted therefrom to the low-voltage side thereof. | 2022-09-15 |
20220294365 | CURRENT SOURCE INVERTER USING BIDIRECTIONAL SWITCHES WITH BIDIRECTIONAL POWER FLOW CAPABILITY - A switching circuit includes a reverse-voltage-blocking (RB) commutation switch, a first inverter leg, and a second inverter leg. The first inverter leg includes a first dual-gate bidirectional (DGBD) and a second DGBD switch connected in series. The second inverter leg includes a third and a fourth DGBD switch connected in series. A pair of the first DGBD switch, the second DGBD switch, the third DGBD switch, and the fourth DGBD switch that are in different inverter legs of the first inverter leg and the second inverter leg are configured to switch between a first DGBD on-state and a second DGBD on-state when in an inverting operating mode. A current with a positive or a negative polarity is conducted when in the first DGBD on-state. When in the second DGBD on-state, a reverse voltage is blocked by and a current with a positive polarity is conducted through the respective DGBD switch. | 2022-09-15 |
20220294366 | ACTUATOR - An actuator that utilizes a Coulomb force is provided. An actuator ( | 2022-09-15 |
20220294367 | POWER GENERATION DEVICE AND INPUT DEVICE - A power generation device includes: a first power generation element that vibrates to generate electric power; a second power generation element that is located lower than the first power generation element to vibrate and thereby generates electric power; and a movable element that attracts the first power generation element downward when the movable element is moving downward, and attracts the second power generation element upward when the movable element is moving upward. The first power generation element vibrates as a result of the downward movement of the movable element, and the second power generation element vibrates as a result of the upward movement of the movable element. | 2022-09-15 |
20220294368 | METHODS OF OPTIMIZING WAVEFORMS FOR ELECTRIC MOTORS - A method of controlling an electric motor includes receiving a duty cycle for the electric motor for delivering a target torque from the electric motor, generating a pulse train, and pulsing the electric motor with the generated pulse train. Generating the pulse train being at least partially based on the received duty cycle. The generated pulse train optimized to improve at least one of noise, vibration, or harshness of the electric motor when compared to a constant pulse frequency. | 2022-09-15 |
20220294369 | BRUSHLESS MOTOR DRIVING DEVICE, DRIVING METHOD FOR A BRUSHLESS MOTOR, AND BRUSHLESS MOTOR - According to one embodiment, a motor driving device includes an output part that supplies an exciting current to an exciting coil, a position detection part that detects a rotational position of a rotor, and a driving control part that produces a driving signal that is based on a detection signal from the position detection part and supplies it to the output part. The position detection part has first, second, and third detection elements that are integrally integrated together with the driving control part and detect rotational positions of the rotor. | 2022-09-15 |
20220294370 | METHOD FOR STARTING A SENSORLESS SINGLE-PHASE ELECTRIC MOTOR AND SENSORLESS SINGLE-PHASE ELECTRIC MOTOR - A method for starting a sensorless single-phase electric motor. The electric motor includes a permanent magnetic motor rotor, an electromagnetic motor stator having a stator coil, a power electronics which energizes the stator coil, a current sensor which measures a current flowing in the stator coil, and a control electronics which controls the power electronics. The control electronics is connected with the current sensor. The method includes energizing the stator coil with an alternating drive voltage, monitoring a drive current which is generated in the stator coil by the alternating drive voltage, and commutating the alternating drive voltage whenever the drive current reaches a predefined positive current threshold value or a predefined negative current threshold value. | 2022-09-15 |
20220294371 | MOTOR CONTROL DEVICE - A motor control device controls a drive of a motor in a motor drive system including the motor and a detent mechanism. The detent mechanism has a detent member that rotates integrally with an output shaft to which the rotation of the motor is transmitted, and an engaging member that moves a valley portion by a rotation of the motor and positions the output shaft by stopping within a positioning range. The motor control device includes a positioning determination unit and an energization control unit. The positioning determination unit determines whether or not the engaging member is stopped within the positioning range based on control parameter other than a detection value of a motor rotation angle sensor that detects a motor rotation angle. When the energization control unit determines that the engaging member is stopped within the positioning range, the energization control unit turns off the energization of the motor. | 2022-09-15 |
20220294372 | GENERATOR - A generator includes: an engine; an alternator attached to an output shaft of the engine; an inverter that rectifies current flowing between the alternator and a power receptacle (power input-output part) in both directions and performs power conversion; an ECU that supplied electric power to the inverter and controls the engine and the inverter; and a starting unit that supplies, to the ECU, electric power from an external power supply device to be connected to the power receptacle, and the alternator is energized to start the engine, by sending a starting initiation instruction from the ECU to the inverter. | 2022-09-15 |
20220294373 | METHOD AND SYSTEM FOR OPERATING A VARIABLE FREQUENCY INDEPENDENT SPEED MOTOR IN AN EXTENDED SPEED RANGE - A system may include a variable frequency independent speed (VFIS) motor-generator. The system may further include a first power conditioner coupled to a set of stator windings of the VFIS motor-generator and a second power conditioner, distinct from the first power conditioner, coupled to a set of primary windings of a high-frequency transformer, where a set of secondary windings of the high-frequency transformer are coupled to a set of rotor windings of the VFIS motor-generator. A method may include providing a first power signal at the set of stator windings. The method may further include generating a second power signal at the second power conditioner for driving the set of rotor windings, where a shaft speed of the VFIS motor-generator is based on a difference between a first frequency of the first power signal and a second frequency of the second power signal. | 2022-09-15 |
20220294374 | SYSTEM AND METHOD FOR CONTROLLING A 3-PHASE TRANSFORMER DEVICE - The embodiments herein relate to a system ( | 2022-09-15 |
20220294375 | SPMSM SENSORLESS COMPOSITE CONTROL METHOD WITH DUAL SLIDING-MODE OBSERVERS - A PMSM sensorless composite control method with dual sliding-mode observers is provided. In particular, two sliding-mode observers are designed, one provides an exponential piecewise sliding-mode function for observation of back electromotive force, and the other sliding-mode observer is for observation of load torque and fine-tuning parameters of a piecewise PI controller while introducing an estimated load torque onto a q-axis for feedforward compensation. A q-axis current inner loop is designed with a second-order sliding-mode controller, which can improve tracking performance of q-axis current and indirectly control an electromagnetic torque. The exponential piecewise sliding-mode function is more conductive to the observation of back electromotive force and can weaken the buffeting phenomenon. The sliding-mode observer for observing the load torque fine-tunes parameters of the piecewise PI controller while performing the feedforward compensation, the load capability of the system is improved. The second-order sliding-mode controller can reduce a torque ripple. | 2022-09-15 |
20220294376 | ELECTRIC MACHINE WITH INTEGRATED POINT FIELD DETECTORS AND SYSTEM FOR MULTI-PARAMETER SENSING - An electric machine disposed within a housing includes a stator, a rotor, and one or more point field detectors. The stator receives current from an inverter. The rotor is connected to and rotating a shaft based on a magnetic field generated by the stator. The one or more point field detectors are configured to detect leakage flux within the housing. The stator, the rotor and the one or more point field detectors are disposed within the housing. | 2022-09-15 |
20220294377 | ESTIMATION DEVICE AND AC MOTOR DRIVE DEVICE - An estimation device includes a phase current determination unit, a time difference calculation unit, and an estimation unit. The phase current determination unit performs a determination process for determining values of phase currents based on the value of the bus current detected by a bus current detection unit and states of gate pulse signals. The time difference calculation unit calculates a difference between a detection time of the bus current used in a previous determination process and a detection time of the bus current used in a present determination process. The estimation unit estimates at least one of a position and a speed of an AC motor based on the values of the phase currents determined by the phase current determination unit and the difference calculated by the time difference calculation unit. | 2022-09-15 |
20220294378 | MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD - In a DC/DC converter, a voltage input from a power source is converted into a predetermined voltage, a harmonic component generated by a harmonic signal generator is superimposed on the converted voltage, and a result is output to the inverter as power to drive an electric motor. As a result, the electric motor can be driven by the signal on which the harmonic components are superimposed without being limited to the upper limit of the switching frequency of the inverter. | 2022-09-15 |
20220294379 | MOTOR DRIVE SYSTEM AND AIR CONDITIONER - A motor drive system includes: an inverter that drives a motor; a current detector that detects and outputs the first signal that is a current value of a current flowing through the inverter; a first low-pass filter that removes a noise frequency component from the first signal and outputs a second signal that is a current value after the noise frequency component has been removed; a demagnetization current determiner that compares a demagnetization current threshold with the second signal, and outputs a demagnetization protection signal when the second signal takes a value larger than the demagnetization current threshold; and a short circuit determiner that compares a third signal with a short circuit and outputs an anomaly signal for stopping the inverter when the third signal takes a value larger than or equal to the short circuit threshold. | 2022-09-15 |
20220294380 | MOTOR AND ENERGY CONVERSION DEVICE THEREOF - The disclosure provides a motor and an energy conversion device. The motor includes a motor coil having x sets of windings. A number of phases of the x sets of windings is m | 2022-09-15 |
20220294381 | METHOD FOR CONTROLLING HEATING OF MOTOR AND CONTROL METHOD FOR MULTI-MOTOR DRIVE SYSTEM - A method for controlling heating of a motor includes: obtaining a heating target temperature value; determining, based on the heating target temperature value, a heating motor that needs to generate heat from a plurality of motors of a multi-motor drive system and heat generation power of the heating motor; and sending a first control instruction to the heating motor. The first control instruction is used to respectively input harmonic currents to three phases of windings of the motor, so that the heating motor generates heat based on the heat generation power. In this way the heating target temperature value is obtained. Therefore, the quantity of heating motors can be flexibly controlled to generate sufficient heat generation power. | 2022-09-15 |
20220294382 | System and Method for Converting and Transmitting Energy - An energy conversion and transmission system includes a thermal energy converter configured to convert thermal blackbody radiation energy to thermal infrared (IR) energy and to output a thermal IR energy stream. The system further includes a transmission device configured to receive the thermal IR energy stream from the thermal energy converter at a first location and output the thermal IR energy stream at a second location. The transmission device supplies the thermal IR energy stream to a thermal IR energy destination at the second location. | 2022-09-15 |
20220294383 | System and method for fastening protective barriers adapted to be compatible with solar panel systems - A system and method for fastening protective barriers to solar panel systems includes a fastener system including a main clip that is coupled to a support clip and a wireform splice. The main clip and support clip of the fastener system are adapted to engage with a solar panel frame. Once engaged with the panel frame, a barrier, such as wire mesh, is placed adjacent to a front face of the main clip and the wireform splice may be coupled to the main clip and engaged with the barrier. The splice is used to secure the barrier to the faceplate. In one embodiment, the fastening devices may be placed in a spaced arrangement, and the barrier is coupled to each fastening device along the continuous run. In this way, a single section of barrier may be secured to the solar panel array system. | 2022-09-15 |
20220294384 | SUPPORT FIXING STRUCTURE AND PHOTOVOLTAIC TRACKING MOUNTING SYSTEM - A supporting and fixing structure and a photovoltaic tracking and mounting system. The supporting and fixing structure includes a main support rod, a mounting rod, a rotary power device and a plurality of auxiliary support rods. The mounting rod is rotatably mounted on the main support rod through the rotary power device. The auxiliary support rods are rotatably matched with the mounting rod. The auxiliary support rod is configured to support the mounting rod. It further includes a valve stem, a housing, an inner housing plate and a plunger rod. The inner housing plate is disposed in the housing, and separates a space in the housing to be two chambers. The plunger rod is movably installed on a housing wall of the housing, and is configured for blocking or communicating the first housing chamber. The valve stem is in sliding and sealing fit with the second housing chamber. | 2022-09-15 |
20220294385 | PHOTOVOLTAIC TRACKING SUPPORT AND TRANSMISSION DEVICE THEREOF - The present invention provides a transmission device applied to a photovoltaic tracking support. The photovoltaic tracking support comprises a stand column and a main beam. The main beam is rotatably supported on the stand column, and the main beam supports a photovoltaic assembly. The transmission device comprises a composite chain gear set and a composite chain wheel set. The composite chain gear set has multiple chain gears. The multiple chain gears are coaxially arranged and are arranged in a manner that the teeth are staggered. The composite chain wheel set has multiple chain wheels. The multiple chain wheels are coaxially arranged, and are in one-to-one correspondence to and meshing transmission with the multiple chain gears. One of the composite chain gear set and the composite chain wheel set is rotatably disposed on the stand column, and the other is connected to the main beam. The present invention also provides a photovoltaic tracking support comprising the transmission device. When the transmission device is applied to the photovoltaic tracking support, the shaking amplitude of the photovoltaic tracking support under the action of strong wind can be reduced, wear can be decreased, and the transmission device adapts to grease-free lubrication conditions. | 2022-09-15 |
20220294386 | LOW-PROFILE BACKRAIL MODULE CLAMP - A method of forming a module clamp of a photovoltaic module support structure may include cutting a folding pattern into a sheet of metal. The folding pattern may include one or more width-wise slits relative to the sheet of metal, one or more length-wise slits relative to the sheet of metal, and a hole. The method may include stamping one or more first features onto the sheet of metal to form a stamped sheet and folding the stamped sheet along the one or more width-wise slits and the one or more length-wise slits to form a preliminary module clamp. The method may include stamping one or more second features onto the preliminary module clamp to form the module clamp. | 2022-09-15 |
20220294387 | STOWING OF PHOTOVOLTAIC MODULES FOR HAIL MITIGATION - A method may include obtaining information from a weather forecasting service that relates to indicators of an incoming hail event. The method may include determining a stowing score that quantifies whether the hail event is likely to occur within a period of time based on the information from the weather forecasting service. Responsive to the stowing score exceeding a threshold value, a time at which the incoming hail event is likely to occur may be predicted based on the weather forecasting service information. The threshold value may indicate a threshold likelihood of the hail event occurring or a threshold period of time before occurrence. The method may include determining a wind direction at the predicted time at which the hail event is likely to occur and stowing photovoltaic modules based on the wind direction. | 2022-09-15 |
20220294388 | PHOTOVOLTAIC SYSTEM - Embodiments of this application disclose a photovoltaic system, to resolve a problem of high costs per kilowatt hour of a photovoltaic system. The photovoltaic system includes a first photovoltaic array, a first power converter, a second photovoltaic array, a second power converter, an energy storage converter, a storage battery, and a photovoltaic inverter. The first photovoltaic array is connected to the photovoltaic inverter through the first power converter. The second photovoltaic array is directly connected to the energy storage converter, or at least one part of the second photovoltaic array is connected to the energy storage converter through the second power converter. The energy storage converter is connected to the photovoltaic inverter and the storage battery. The photovoltaic inverter is connected to a power grid. | 2022-09-15 |
20220294389 | MODULE SWITCHOFF DEVICE AND SECURITY PROTECTION SYSTEM OF PHOTOVOLTAIC POWER GENERATION SYSTEM - A module switchoff device and a security protection system of a photovoltaic power generation system. The module switchoff device comprises: a switch tube having a first end connected to a positive input end of the module switchoff device and a second end connected to a negative input end of the module switchoff device, the positive input end and the negative input end of the module switchoff device being connected to a photovoltaic module; a driving module connected to a control end of the switch tube; and a power supply module connected to the driving module and an output end of the module switchoff device, the output end of the module switchoff device being connected to a controller used for controlling the switch tube to be switched off when there is a need for the photovoltaic module to normally output a voltage and controlling the switch tube to be switched on when there is no need for the photovoltaic module to output a voltage, and the power supply module being used for converting a control signal of the controller. | 2022-09-15 |
20220294390 | CMOS INTEGRATED TEMPERATURE INSENSITIVE, STABLE, AND CALIBRATED OSCILLATOR - A temperature insensitive oscillator system. The system includes a substrate having a first surface and an opposing second surface, a CMOS device with one or more CMOS circuits attached to the first surface of the substrate, one or more piezoelectric transducers attached to an outer surface of the CMOS device, a voltage-controlled oscillator generating a RF frequency, which is transmitted as a plurality of short pulses to the one or more piezoelectric transducers, and one or more delays and oscillators using resistor and active components arranged alongside the piezoelectric transducers or on the CMOS device such that the voltage-controlled oscillator has minimal dependence on temperature, and has minimal deviation from a programmed frequency. | 2022-09-15 |
20220294391 | INTEGRATED CIRCUIT DEVICE AND OSCILLATOR - An integrated circuit device includes a heat generating circuit controlled based on a temperature control signal. The heat generating circuit includes a heat generating transistor including a plurality of transistors that have a gate voltage controlled based on the temperature control signal and are coupled in parallel. A resistance value of a source resistance of the heat generating transistor is smaller than a resistance value of a drain resistance of the heat generating transistor. | 2022-09-15 |
20220294392 | VIBRATOR AND OSCILLATOR - A vibrator includes: a vibration element that includes a pair of first excitation electrodes formed at the first vibration portion, a pair of second excitation electrodes formed at the second vibration portion, and a pair of third excitation electrodes formed at the third vibration portion, in which one second excitation electrode of the pair of second excitation electrodes is formed at a first inclined surface that is inclined with respect to two main surfaces, and one third excitation electrode of the pair of third excitation electrodes is formed at a second inclined surface that is inclined with respect to the two main surfaces and the first inclined surface; and a package that houses the vibration element. The vibration element includes a fixing portion to be fixed to the package. The fixing portion is provided between the first vibration portion and the second and third vibration portions. | 2022-09-15 |
20220294393 | RESONATOR CIRCUIT - The invention relates to a resonator circuit, the resonator circuit comprising a transformer comprising a primary winding and a secondary winding, wherein the primary winding is inductively coupled with the secondary winding, a primary capacitor being connected to the primary winding, the primary capacitor and the primary winding forming a primary circuit, and a secondary capacitor being connected to the secondary winding, the secondary capacitor and the secondary winding forming a secondary circuit, wherein the resonator circuit has a common mode resonance frequency at an excitation of the primary circuit in a common mode, wherein the resonator circuit has a differential mode resonance frequency at an excitation of the primary circuit in a differential mode, and wherein the common mode resonance frequency is different from the differential mode resonance frequency. | 2022-09-15 |
20220294394 | 3-WAY DUAL-BAND DOHERTY POWER AMPLIFIER - A multi-band Doherty power amplifier (DPA) is provided. A dual-band Doherty power amplifier (DB-DPA) is based on a 3-way architecture and comprises a main amplifier for each band and an auxiliary amplifier handling both bands. The 3-Way DB-DPA improves the average drain efficiency in concurrent dual-band operation compared to the traditional 2-Way DB-DPA, by avoiding early clipping in the main amplifiers, while benefiting from load-pulling from the auxiliary power amplifier. | 2022-09-15 |
20220294395 | TRANSCEIVER CIRCUIT - A Doherty amplifier including a main amplifier and a peak amplifier is mounted on a package substrate. A low noise amplifier is further mounted on the package substrate. A transmit/receive switch switches in terms of time between a transmission connection state in which an output signal of the Doherty amplifier is supplied to an antenna and a reception connection state in which a signal received by the antenna is inputted to the low noise amplifier. | 2022-09-15 |
20220294396 | CLASS-D AMPLIFYING SYSTEM AND CLASS-D AMPLIFIER CIRCUIT - A class-D amplifying system includes: a first digital-to-analog converter (DAC), a class-D amplifier circuit and a second DAC. The first DAC generates an analog input signal according to a digital input signal. The class-D amplifier circuit generates an output signal according to the analog input signal in a pulse width modulation (PWM) manner. The second DAC generates a common mode (CM) adjustment current for adjusting a CM voltage of the analog input signal according to one or more of the following parameters: (1) the CM voltage of the analog input signal; and/or (2) a driving power. A power stage circuit of the class-D amplifier circuit is powered by the driving power. The second DAC determines which parameter the CM adjustment current is correlated to according to: (A) A level state of the output signal; and/or (B) A level state of a PWM signal of the class-D amplifier circuit. | 2022-09-15 |
20220294397 | SIGNAL AMPLIFIER CIRCUIT, VOLTAGE CONVERTER AND SYSTEM - The invention relates to a signal amplifier circuit for amplifying a signal, in particular an audio amplifier circuit, includes at least one first amplifier transistor (Q | 2022-09-15 |
20220294398 | AMPLIFICATION CIRCUIT - An amplification circuit includes a first amplifier provided between an input terminal and an output terminal and a second amplifier connected in parallel with the first amplifier between the input terminal and the output terminal. The first amplifier includes a transistor and a transistor, which are cascode connected with each other. The second amplifier includes a transistor. The transistor has a gate connected to the input terminal, a source connected to ground, and a drain. The transistor has a gate, a source connected to the drain of the transistor, and a drain connected to the output terminal. The transistor has a gate connected to the input terminal, a source connected to ground, and a drain connected to the output terminal. | 2022-09-15 |
20220294399 | SEMICONDUCTOR DEVICE - According to an embodiment, a semiconductor device includes a radio-frequency amplifier circuit, a first switch, a second switch, and a third switch. The first switch is coupled between a first node and an input end of the radio-frequency amplifier circuit. The second switch is coupled between the first node and an output end of the radio-frequency amplifier circuit. The third switch is coupled between the first node and a reference potential node. A control end of the third switch is coupled to one of the first node and the reference potential node. | 2022-09-15 |
20220294400 | APPARATUS AND METHODS FOR AVERAGE POWER TRACKING - Average power tracking (APT) systems with fast transient settling are disclosed. In certain embodiments, an APT system is used to provide a power amplifier supply voltage to a power amplifier that amplifies a radio frequency (RF) signal. The APT system controls the power amplifier supply voltage to track an average power of the RF signal, and generates a first regulated voltage based on a first average power tracking voltage level and a second regulated voltage based on a second average power tracking voltage level. The APT system includes a DC switch configured to receive the first regulated voltage and the second regulated voltage, and operable to change state to transition the power amplifier supply voltage from the first average power tracking voltage level to the second average power tracking voltage level. | 2022-09-15 |
20220294401 | POWER AMPLIFIER CIRCUIT, HIGH FREQUENCY CIRCUIT, AND COMMUNICATION APPARATUS - Increase in power-added efficiency can be achieved. A second base of a second transistor is connected to a first collector of a first transistor. A third base of a third transistor is connected to the first collector of the first transistor, and a third collector of the third transistor is connected to a second collector of the second transistor. A second bias circuit includes a fifth transistor connected to the second base of the second transistor. A third bias circuit includes a sixth transistor connected to the third base of the third transistor. A first current limiting circuit includes a seventh transistor, a first collector resistor, and a first base resistor. A second current limiting circuit includes an eighth transistor, a second collector resistor, and a second base resistor. | 2022-09-15 |
20220294402 | SEMICONDUCTOR DEVICE AND METHOD FOR OPERATING SEMICONDUCTOR DEVICE - A novel comparison circuit, a novel amplifier circuit, a novel battery control circuit, a novel battery protection circuit, a power storage device, a semiconductor device, an electric device, and the like are provided. In a semiconductor device, one of a source and a drain of a first transistor is electrically connected to one of a source and a drain of a second transistor and one of a source and a drain of a third transistor; the other of the source and the drain of the third transistor is electrically connected to a first output terminal; and the other of the source and the drain of the second transistor is electrically connected to a second output terminal. The semiconductor device has a function of outputting a comparison result of a signal supplied to a gate of the second transistor and a signal supplied to a gate of the third transistor, from the first output terminal and the second output terminal; and a function of changing the potential output from the first output terminal in accordance with the potential applied to a back gate of the first transistor. | 2022-09-15 |
20220294403 | OPERATIONAL AMPLIFIER, CHIP, AND ELECTRONIC DEVICE - This application provides an operational amplifier that increases the stability and settling speed of a common-mode feedback circuit. The operational amplifier includes N stages of amplifiers connected in series and M common-mode feedback circuits, where N and M are integers, N≥3, and N≥M>1. An i | 2022-09-15 |
20220294404 | BIDIRECTIONAL VARIABLE GAIN AMPLIFIERS FOR RADIO FREQUENCY COMMUNICATION SYSTEMS - Bidirectional variable gain amplifiers (VGAs) for radio frequency (RF) communication systems are provided. In certain embodiments, a bidirectional VGA includes a first amplifier having an input coupled to a transmit/receive port, a second amplifier having an output coupled to a transmit port, a third amplifier having an input coupled to a receive port, a fourth amplifier having an output coupled to the transmit/receive port and to the input of the first amplifier, and a switch circuit that connects an output of the first amplifier to an input of the second amplifier in a transmit mode, and that connects an output of the third amplifier to an input of the fourth amplifier in a receive mode. | 2022-09-15 |
20220294405 | Automatic Progressive Transition Of Volume Adaptation To Environmental Noise - The present disclosure provides systems and methods for progressively transitioning the playback volume based on a background noise level. The device ( | 2022-09-15 |
20220294406 | COMMON MODE FILTER - A common mode filter is disposed on a circuit board. A signal layer of the circuit board has a differential signal wire pair. The common mode filter has a slot structure and a filtering frequency adjusting device. The slot structure is formed on a reference voltage layer of the circuit board, wherein the slot structure surrounds the differential signal wire pair. The filtering frequency adjusting device is disposed on a corner part of the slot structure, wherein the filtering frequency adjusting device includes at least one of at least one capacitor and at least one inductor, and is disposed on the circuit board across the differential signal wire pair. | 2022-09-15 |
20220294407 | MULTILAYER FILTER DEVICE - A filter device includes a filter including at least one inductor and at least one capacitor, and a stack of a plurality of dielectric layers and a plurality of conductor layers. The plurality of dielectric layers include at least one first dielectric layer formed of a first dielectric material and at least one second dielectric layer formed of a second dielectric material. The plurality of conductor layers include at least one first conductor layer in contact with the at least one first dielectric layer, and at least one second conductor layer in contact with the at least one second dielectric layer. The temperature coefficient of resonant frequency of the first dielectric material has a positive value. The temperature coefficient of resonant frequency of the second dielectric material has a negative value. | 2022-09-15 |
20220294408 | MULTILAYERED FILTER DEVICE - A filter device includes a first port, a second port, a first high-pass filter, a first low-pass filter, and a stack. The first high-pass filter includes a first inductor. The first low-pass filter includes a first inductor. At least one second conductor layer constituting the first inductor of the first low-pass filter is located between at least one first conductor layer constituting the first inductor of the first high-pass filter and a ground conductor layer in a stacking direction. | 2022-09-15 |
20220294409 | MULTILAYER ELECTRONIC COMPONENT - An electronic component includes a first and second inductor forming sections integrated with a stack, and a connection conductor layer connecting the first and second inductor forming sections inside the stack. In the first inductor forming section, two first through hole lines are connected to a wide portion of an inductor conductor layer, and two second through hole lines are connected to a narrow portion of the inductor conductor layer. In the second inductor forming section, two first through hole lines are connected to a wide portion of an inductor conductor layer, and two second through hole lines are connected to a narrow portion of the inductor conductor layer. | 2022-09-15 |
20220294410 | BAND-PASS FILTER - A band-pass filter includes a first input/output port, a second input/output port, a first high-pass filter, a first low-pass filter, and a first stub resonator. The first stub resonator includes a first distributed constant line. The first low-pass filter is provided between the first input/output port and the first high-pass filter in the circuit configuration. The first distributed constant line has a first end connected to a first path connecting the first input/output port and the first low-pass filter, and a second end closest to a ground in the circuit configuration. | 2022-09-15 |
20220294411 | BRANCHING FILTER - A branching filter includes a common port, a first signal port, a second signal port, a first filter, which is provided between the common port and the first signal port, that selectively passes a signal of a frequency within a first passband, a second filter, which is provided between the common port and the second signal port, that selectively passes a signal of a frequency within a second passband different from the first passband, and a capacitor that has a first end and a second end and connects the first filter and the second filter. | 2022-09-15 |
20220294412 | INTERDIGITATED RF FILTER - An interdigitated RF filter. The interdigitated RF filter includes input fingers connected to an input node and output fingers connected to an output node where at least one input finger is connected the output node or at least one output finger is connected to the input node. The described interdigitated RF filter can be implemented in various configurations such as series, shunt, ladder or a combination thereof. | 2022-09-15 |
20220294413 | HYBRID SIGNAL FILTER - A signal filter includes a notch filter and a wideband filter. The notch filter is configured to perform a band-rejection filtering operation according to a band-rejection filtering property. The wideband filter is coupled to the notch filter, and is configured to perform a wideband filtering operation according to a wideband filtering property. The band-rejection filtering property includes a first cutoff frequency, a frequency bandwidth, a relatively high quality factor and a relatively low coupling coefficient. The wideband filtering property includes a second cutoff frequency, a relatively low quality factor and a relatively high coupling coefficient. The first and the second cutoff frequencies have a frequency difference therebetween. A ratio of the frequency difference to the frequency bandwidth is within a preset ratio range being from 2.5% to 20%. | 2022-09-15 |
20220294414 | THIN FILM PIEZOELECTRIC ACOUSTIC WAVE RESONATOR AND MANUFACTURING METHOD THEREFOR, AND FILTER - A thin film piezoelectric acoustic wave resonator and a manufacturing method therefor, and a filter. The thin film piezoelectric acoustic wave resonator includes: a first base, an upper electrode, a piezoelectric plate body, a lower electrode and an isolation cavity. The upper electrode, the piezoelectric plate body and the lower electrode are arranged on an upper surface of the first base and are stacked sequentially from top to bottom. The upper electrode, the piezoelectric plate body and the lower electrode have an overlapping region in a direction perpendicular to the surface of the piezoelectric plate body, in which a first gap is formed between the piezoelectric plate body and the upper electrode, and a second gap is formed between the piezoelectric plate body and the lower electrode. The isolation cavity surrounds the periphery of the piezoelectric plate body and connects the first and second gaps together. At least one connecting bridge is arranged between the piezoelectric plate body and the base. | 2022-09-15 |
20220294415 | ELASTIC WAVE DEVICE - An elastic wave device capable of obtaining good characteristics while maintaining sufficient mechanical strength in an ultra-high frequency band of 6 GHz or higher includes: a piezoelectric substrate; an electrode in contact with the piezoelectric substrate; and an acoustic multilayer film in contact with the piezoelectric substrate and/or the electrode. The elastic wave device is configured to utilize higher-order modes of resonance characteristics of bulk waves. The acoustic multilayer film has a low acoustic impedance film and a high acoustic impedance film which are alternately stacked. | 2022-09-15 |
20220294416 | AIR-GAP TYPE FBAR - An air-gap type film bulk acoustic resonator (FBAR) according to the present invention may include: a substrate comprising an air gap portion on an upper surface thereof; a lower electrode formed on the substrate; a piezoelectric layer formed on the lower electrode; an upper electrode formed on the piezoelectric layer; a protective layer formed on the upper electrode; and a beam structure extended in a dome shape from one side of the upper electrode to define a space portion between the upper electrode and the piezoelectric layer, wherein one end of the beam structure is in contact with the piezoelectric layer. | 2022-09-15 |
20220294417 | ACOUSTIC WAVE DEVICE - An acoustic wave device includes a piezoelectric member, a first and second electrodes on first and second main surfaces of the piezoelectric member, an acoustic reflection section including an air gap, and an additional mass film in at least one of areas on the first and second electrodes and an area outward of the first or second electrodes. A region where at least one of the first electrode and the additional mass film overlaps the second electrode includes a first region and a second region surrounding the first region. In the second region, a configuration of additional mass film portions on corresponding sides of a first direction in a plane of the piezoelectric member and a configuration of additional mass film portions on corresponding sides of a second direction in the plane of the piezoelectric member are different from each other. | 2022-09-15 |
20220294418 | PIEZOELECTRIC RESONATOR PLATE AND PIEZOELECTRIC RESONATOR DEVICE - A crystal resonator plate according to one or more embodiments may include: a vibrating part; an external frame part surrounding the outer periphery of the vibrating part; and a support part connecting the vibrating part to the external frame part. A first excitation electrode is formed on a first main surface of the vibrating part. A second excitation electrode is formed on a second main surface of the vibrating part. The second excitation electrode includes a pair of parallel sides parallel to each other. The first excitation electrode includes protruding parts that protrude outward from a part between the parallel sides the second excitation electrode in plan view. The protruding parts each have an outer edge shape that is not along the parallel sides in plan view. | 2022-09-15 |
20220294419 | CRYSTAL DEVICE AND RESONANCE ELEMENT - A resonance element supported by a bearing structure includes a crystal chip and an excitation electrode. The crystal chip includes a main surface having a support surface portion being in contact with the bearing structure. The excitation electrode is disposed on the main surface, has an electrode area, and includes an electrode indentation boundary partly encompassing the support surface portion. The electrode indentation boundary has a first boundary end and a second boundary end being opposite to the first boundary end. The electrode indentation boundary and a reference line segment defined by the first and the second boundary ends form an electrode indentation region having an indentation area. A ratio of the indentation area to the electrode area ranges from 0.05 to 0.2. | 2022-09-15 |
20220294420 | ACOUSTIC WAVE DEVICE, FILTER, AND MULTIPLEXER - An acoustic wave device includes a substrate, one or more acoustic layers provided on the substrate, the one or more acoustic layers each being an air gap or an acoustic mirror, the acoustic mirror having a structure in which at least two layers having different acoustic characteristics are stacked, lower electrodes provided on the substrate, the lower electrodes sharing one acoustic layer of the one or more acoustic layers between the substrate and the lower electrodes, the lower electrodes being arranged to be separated from each other across a groove, an insulating film provided in the groove on the one acoustic layer, a piezoelectric film continuously provided on the lower electrodes and the groove, and an upper electrode continuously provided on the piezoelectric film to form resonators by sandwiching the piezoelectric film between the upper electrode and the lower electrodes. | 2022-09-15 |
20220294421 | MULTIPLEXER WITH FILTER INCLUDING DIFFERENT TYPES OF ACOUSTIC WAVE RESONATORS - Aspects of this disclosure relate to multiplexers with acoustic wave resonators. The multiplexer includes a first filter and a second filter. The first filter includes a plurality of bulk acoustic wave resonators and a shunt surface acoustic wave resonator. The shunt acoustic wave resonator can have a resonant frequency in a passband of the second filter. The passband of the second filter is below a passband of the first filter. In certain applications, the first filter is a receive filter and the second filter is a transmit filter. | 2022-09-15 |
20220294422 | MULTIPLEXER WITH ACOUSTIC WAVE FILTER INCLUDING DIFFERENT TYPES OF RESONATORS - Aspects of this disclosure relate to multiplexers with that include an acoustic wave resonator. The acoustic wave filter includes a plurality of acoustic wave resonators of a first type and a shunt acoustic wave resonator of a second type. The shunt acoustic wave resonator of the second type has lower second harmonic distortion than the acoustic wave resonators of the first type. The shunt acoustic wave resonator of the second type has a resonant frequency in a passband of another filter of the multiplexer. Related radio frequency modules, wireless communication devices, and methods are also disclosed. | 2022-09-15 |
20220294423 | ACOUSTIC WAVE FILTER INCLUDING DIFFERENT TYPES OF RESONATORS - Aspects of this disclosure relate to acoustic wave filter. The acoustic wave filter can include different types of acoustic wave resonators. The acoustic wave filter can include shunt acoustic wave resonator that has lower second harmonic distortion than other acoustic wave resonators of the acoustic wave filter. In certain embodiments, the shunt acoustic wave resonator can be a surface acoustic wave resonator. Related multiplexers, radio frequency modules, wireless communication devices, and methods are also disclosed. | 2022-09-15 |
20220294424 | TIME DIVISION INTERLEAVING BAND-PASS FILTER FOR USE IN VOICE ACTIVITY DETECTION - In one aspect, a time division interleaving band-pass filter can be used in voice activity detection, which operates at different central frequencies in respective intervals of a predetermined period of time. The band-pass filter circuitry includes multiple band-pass filtering channels sharing a common transistor circuit, bias circuit and current mirror circuit. The multiple band-pass filtering channels operate in a time division interleaving manner, which enables the sharing of the common set of band-pass filter circuitry components. Thus, the present invention allows a reduced chip area as the area does not increase proportionally with the number of filtering channels. The invention also mitigates the influence of transistor fabrication variations on the filter's central frequencies. Moreover, pulse durations t | 2022-09-15 |