49th week of 2020 patent applcation highlights part 70 |
Patent application number | Title | Published |
20200382004 | POWER SUPPLY APPARATUS - A power supply apparatus including a rectifier circuit, an energy storage circuit, a power conversion circuit, a detection circuit, an energy supplement circuit, and a control circuit is provided. The rectifier circuit rectifies an AC voltage and provides a DC voltage. The energy storage circuit and the energy supplement circuit store electrical energy according to the DC voltage. The power conversion circuit converts the DC voltage into an output voltage. The detection circuit detects a voltage amplitude of the AC voltage according to the DC voltage and generates a detection signal group accordingly. The control circuit is coupled to the detection circuit to receive the detection signal group. When the control circuit determines that the voltage amplitude of the AC voltage is less than or equal to a first threshold according to the detection signal group, the control circuit instructs the energy supplement circuit to charge the energy storage circuit. | 2020-12-03 |
20200382005 | METHOD FOR DRIVING A SWITCH IN A POWER CONVERTER, DRIVE CIRCUIT AND POWER CONVERTER - A method for operating a switch in a power converter, a drive circuit for operating a switch in a power converter, and a power converter are disclosed. The method includes: driving an electronic switch coupled to an inductor in a power converter based on a feedback signal (S | 2020-12-03 |
20200382006 | OPTOCOUPLER CURRENT TRANSFER RATIO COMPENSATION - A flyback converter is disclosed having a secondary side controller that generates an input current for an optocoupler diode by driving a variable resistor with a control voltage. The secondary side controller varies a variable resistance for the variable resistor to compensate for current transfer ratio gain variations for the optocoupler. | 2020-12-03 |
20200382007 | POWER SUPPLY APPARATUS AND CONTROL METHOD THEREOF - A control method for a power supply apparatus is provided. Firstly, at least one of an output voltage or an output current of the resonant converter is sampled. Then, an error signal is generated according to a reference value and at least one of the output voltage or the output current. While the resonant converter is in a burst mode, a first switching signal and a chopping signal are generated according to the error signal. The chopping signal has a chopping period and a duty cycle. The chopping period and the duty cycle are dynamically adjusted according to the error signal. Then, a second switching signal is generated according to the chopping signal and the first switching signal. A switch unit of the resonant converter is turned on or turned off according to the second switching signal. | 2020-12-03 |
20200382008 | METHOD FOR CHANGING AUDIO LIMITER SETTINGS UNDER LOW ALTERNATING-CURRENT (AC) LINE VOLTAGE CONDITION - Certain aspects of the present disclosure are generally directed to circuitry and techniques for adjusting an audio signal to avoid undesirable system behavior under low alternating-current (AC) line voltage and high volume conditions. For example, certain aspects provide an apparatus for audio amplification. The apparatus generally includes an amplifier, a supply voltage generation circuit having an input coupled to an input voltage node of the apparatus and an output coupled to a supply voltage terminal of the amplifier, the supply voltage generation circuit having a transformer, a primary winding of the transformer being coupled to the input voltage node, a peak voltage detector circuit configured to detect a peak voltage at a secondary winding of the transformer, and a controller circuit configured to adjust an input audio signal of the amplifier based on the detected peak voltage. | 2020-12-03 |
20200382009 | MULTI OUTPUT DC/DC CONVERTER AND METHOD FOR CONTROLLING THE SAME - A multi output DC/DC converter includes a transformer having a primary side winding connected to an input side and a secondary side winding connected to an output side; a rectifying diode for rectifying an output of the secondary side winding; an output inductor having a first end connected to the rectifying diode; and a first output switching element and a second output switching element each having first ends connected to a second end of the output inductor, where a second end of the first output switching element and a second end of the second output switching element become first and second output stages outputting different voltages, respectively. | 2020-12-03 |
20200382010 | CIRCUIT FOR PROVIDING VARIABLE WAVEFORM EXCITATION - A circuit for testing an electronic component, such as a transformer, includes at least two power supplies and at least two H bridge circuits. A first H bridge circuit is conductively coupled in parallel to a first power supply. A second H bridge circuit is conductively coupled in parallel to a second power supply. The second H bridge circuit includes one or more anti-series diodes for preventing current from the first power supply from passing through the second H bridge circuit to the second power supply. The first H bridge circuit and the second H bridge circuit are configured to conductively couple to the electronic component for providing a voltage with a predefined waveform to the electronic component. | 2020-12-03 |
20200382012 | SYNCHRONOUS RECTIFICATION OF LLC CONVERTERS BASED ON HOMOPOLARITY - Synchronous rectification methods and algorithms, and polarity sensing techniques, based on the homopolarity cycle concept for conduction loss reduction in LLC resonant converters are provided. In a half bridge rectifier configuration, one of rectifier switches is switched ON when the polarity of the inverter and rectifier voltages are both positive and the other rectifier switch is switched ON when both polarities are negative. | 2020-12-03 |
20200382013 | MOTOR CONTROL UNIT AND ELECTRIC POWER STEERING APPARATUS EQUIPPED WITH THE SAME - A motor control unit that driving-controls a motor by an inverter based on a current command value, including: a voltage detecting section to detect a power supply voltage of a power supply connected to the inverter, a temperature detection device disposed on a wiring pattern of a circuit substrate between the inverter and the power supply, a voltage-dividing circuit to divide with the power supply voltage using the temperature detection device and resistors, a temperature detecting section to detect a temperature of the wiring pattern based on a dividing voltage from the voltage-dividing circuit and a voltage detected value detected in the voltage detecting section, and an overheat protection control section to limit the current command value based on a temperature detected value of the temperature detecting section, wherein the temperature detecting section detects the temperature of the wiring pattern using a predetermined equation or a data table in which data are preliminarily set without affecting the power supply voltage. | 2020-12-03 |
20200382014 | POWER CONVERSION DEVICE - A power conversion device includes a case, a power module, a smoothing capacitor and a high-voltage connection portion. The power module is housed in the case. The smoothing capacitor is fixed to the case by capacitor fixing bolt, and suppresses voltage fluctuations. In the high-voltage connection portion, the power module and the smoothing capacitor are electrically connected. The locations at which the smoothing capacitor is fixed to the case by the capacitor fixing bolts correspond to the capacitor fixing points. The capacitor fixing points are arranged at positions that avoid corner portions of the smoothing capacitor. The power module and the smoothing capacitor are disposed adjacent to each other at the high-voltage connection portion. | 2020-12-03 |
20200382015 | POWER SWITCHING MODULE AND ELECTRONIC POWER DEVICE INTEGRATING SAID MODULE - The power module comprises an electronic board (EB), in which at least one power switching branch is integrated, a capacitor (C | 2020-12-03 |
20200382016 | RECTIFYING CONTROL MODULE, ACTIVE BRIDGE RECTIFYING CONTROL APPARATUS, AND METHOD OF OPERATING THE SAME - An active bridge rectifying control apparatus includes a bridge rectifying unit and a rectifying control module. The rectifying control module includes a phase control unit, a low-side drive unit, and a self-drive unit. The phase control unit provides a live line signal and a ground line signal according to a positive half cycle and a negative half cycle of an AC power source. The low-side drive unit provides a low-side control signal according to the live line signal and the ground line signal. The self-drive unit establishes a drive voltage according to the positive half cycle and the negative half cycle of the AC power source, and provides a high-side control signal according to the low-side control signal. The bridge rectifying unit rectifies the AC power source into a DC power source according to the low-side control signal, the high-side control signal, and the drive voltage. | 2020-12-03 |
20200382017 | SWITCHED CAPACITORS FOR AC-DC APPLICATIONS - An apparatus for conversion between AC and DC voltages includes a rectifier and first and second stages coupled to each other and having a regulator and a switched-capacitor circuit respectively. The first stage receives a first voltage from the rectifier and the second stage provides a second voltage. A controller controls the first and second stages. | 2020-12-03 |
20200382018 | Rectifying circuit and devices comprising the same - A rectifying circuit ( | 2020-12-03 |
20200382019 | INVERTER DEVICE - An inverter device includes: three phase sections each including multiple single-phase output inverter cells connected in series, wherein each inverter cell receives input of alternating current power via a transformer; a neutral point to which an end of the series connection of each phase section is connected; current sensors each disposed at a line between the neutral point and a neutral-point-side inverter cell of the corresponding phase section; a transformer board containing the transformer; an inverter board containing the inverter cells, and being adjacent to the transformer board; and an output board containing a controller, wherein the output board includes a three-phase output terminal connected to a load, and is adjacent to the inverter board. Each line from the neutral-point-side inverter cell to the neutral point includes a part diverted from the inverter board into the output board, wherein each current sensor is arranged in the output board. | 2020-12-03 |
20200382020 | POWER MODULE FOR A CONVERTER AND MULTI-LEVEL CONVERTER - A power module for a converter, in particular for a multilevel converter. The power module includes a link circuit capacitor, two connection terminals, at least one half-bridge connected in parallel with the link circuit capacitor and having two semiconductor switches, and, for each half-bridge, a bypass diode connected in parallel with a first semiconductor switch of the half-bridge and a load-relief circuit group connected in parallel with the first semiconductor switch. The load-relief circuit group has a load-relief thyristor and a load-relief diode connected in series with the load-relief thyristor. | 2020-12-03 |
20200382021 | INVERTER DEVICE - An inverter device includes an inverter circuit that has switching elements configuring an upper arm and a lower arm of each of U, V, W-phases, a signal generator that generates signals having waveforms corresponding to signals of U, V, W-phase command voltages, a first calculation unit that calculates an effective line voltage, a second calculation unit that generates a modulation voltage every control period, and a comparison unit that compares the signals with signals of the modulation voltage every control period, and outputs signals having pulse patterns which operate the switching elements of the upper arm and the switching element of the lower arm in the inverter circuit. | 2020-12-03 |
20200382022 | DAMAGE ASSESSMENT - Methods of estimating tribological damage described herein include examples where varying power is applied between surfaces engaged in frictional contact. Calculations evaluate power consumed at the relevant frictional contact and temperature values may be gathered to supplement the calculated power. Instantaneous and cumulative assessments of damage are calculated based on that information. Measurements or calculations of electrical power may be used as part of the damage assessment. | 2020-12-03 |
20200382023 | VIBRATION WAVE MOTOR AND ELECTRONIC APPARATUS - A vibration wave motor includes a vibrator including an electrical-mechanical energy conversion element and an elastic member, a contact member in contact with the elastic member, and a supporting member that supports the vibrator, wherein the supporting member supports an outer periphery portion of the vibrator so as to be movable along a direction in which the vibrator is pressed toward the contact member, and selectively supports a node of a vibration of the vibrator. | 2020-12-03 |
20200382024 | VIBRATION-TYPE ACTUATOR WITH VIBRATION BODY AND CONTACT BODY RELATIVELY MOVING, APPARATUS, MULTI-AXIS STAGE UNIT, AND ARTICULATED ROBOT - A vibration-type actuator that can suppress variation in pressing force and reaction force on vibration bodies and contact bodies. The vibration-type actuator comprising vibration body units each including a vibration body including an elastic body and an electro-mechanical energy conversion element, and a contact body contacting with the vibration bodies, wherein the contact body and the vibration bodies relatively move in a predetermined direction, a first vibration body unit, including at least one of the vibration body units, includes a restriction unit configured to fix the first vibration body unit and restrict a degree of freedom in the predetermined direction, and a second vibration body unit, including at least one of the vibration body units, includes a supporting guide unit configured to support the second vibration body unit while the second vibration body unit being movable in a direction orthogonal to the predetermined direction. | 2020-12-03 |
20200382025 | MOTOR CONTROLLER - A motor controller includes a motor drive unit configured to drive and control a motor, an electrical discharge control unit configured to perform control in which regenerative power from the motor is consumed by a regenerative power discharge resistor, and a housing formed to accommodate the motor drive unit and the electrical discharge control unit, wherein at least a part of the housing is configured as the regenerative power discharge resistor. | 2020-12-03 |
20200382026 | SLAVE UNIT AND SERVO DRIVING SYSTEM - To avoid cost increase, delay of response, time, and performance degradation in driving a power source including a plurality of servo motors and/or a servo motor with a plurality of windings. A slave unit drives a power source including a plurality of servo motors and/or a servo motor with a plurality of windings using a plurality of amplifiers on the basis of a command from a high-order controller. The slave unit includes: a storage unit stores servo internal statuses of the respective servo motors and/or the respective windings, judgment data, and resource data; a servo internal status copying judgment unit determines a copying source and a copying destination, and judges whether to copy a servo internal status of the copying source to the copying destination to commonalize therebetween on the basis of the judgment data and the resource data; a servo internal status copying execution unit copies the servo internal status of the copying source to the copying destination; and a servo control unit outputs each of the plurality of servo internal statuses to the respective amplifiers to control driving of the power source. | 2020-12-03 |
20200382027 | CONTROL DEVICE AND WIRE CONNECTION DETERMINATION METHOD - A control device includes: an output unit configured to select a motor and output a drive command to a motor drive unit that should be connected to the selected motor so that the selected motor executes a predetermined feed operation; an acquisition unit configured to acquire feedback information from each of the multiple motor drive units; and a wire connection determination unit configured to determine, based on the feedback information, whether the selected motor is connected to the motor drive unit that should be connected to the selected motor, by a power line and a feedback line. | 2020-12-03 |
20200382028 | Control Unit and Method to Detect Stall or Step-Loss in a Stepper Motor - A control unit is configured to determine a first parameter from a back EMF signal, and to determine at least one second parameter from the back EMF signal corresponding to the first parameter. The control unit verifies, based on the first parameter, at least one condition containing the at least one second parameter, and detects stall or step-loss in the stepper motor based on the verification. The control unit uses a pattern detection by identifying characteristic features of peaks of the back EMF signal, which are order, magnitude and polarity. These characteristic features are independent of RPM, backlash, load and do not require complex calculations and are very robust even at lower RPMs. | 2020-12-03 |
20200382029 | Dual-Frequency Filter for Distinguishing Between Different Types of Grid Events - A method for controlling a dual-fed induction generator (DFIG) connected to a power grid in response to a high-voltage grid event includes receiving, via a controller, a frequency signal of the power grid. The method also includes filtering the frequency signal via a filtering assembly so as to determine whether certain types of grid conditions are present in the power grid. The filtering assembly includes a first filter connected in parallel with a second filter. The first filter has a bandwidth that is greater than the second filter. Further, the method also includes comparing output signals of the first and second filters of the filtering assembly to one or more frequency thresholds. Moreover, the method includes controlling the DFIG based on the comparison. | 2020-12-03 |
20200382030 | DC GENERATOR SYSTEM - A system including a variable frequency generator (VFG) including a generator configured to conduct alternating current to a first rectifier configured to convert alternating current from the VFG to direct current and drive it to an HVDC Bus Network, a variable frequency second generator including a second generator configured to conduct alternating current to a second rectifier configured to convert alternating current from the second generator to direct current and conduct it to the HVDC Bus Network, a speed correcting gearbox operatively connected to the VFG configured to align generator frequency to the second generator frequency, and a VFG control unit operatively connected to the generator configured to control the VFG, and a second generator control unit operatively connected to the second generator and the HVDC Bus Network configured to control the second generator. | 2020-12-03 |
20200382031 | SYSTEMS AND METHODS FOR PREDICTING THE HEALTH OF INTEGRATED DRIVE GENERATORS - A method of predicting a health status of an integrated drive generator (IDG) includes determining an effective deviation across a plurality of IDG output frequencies for a given IDG operation period. The method includes correlating the effective deviation to an IDG capability to determine a health of the IDG. A system for predicting a health status of an integrated drive generator (IDG) includes an IDG and a generator control unit (GCU) operatively connected to the IDG to determine a plurality of IDG output frequencies for a given IDG operation period. The system includes a central processing unit (CPU) operatively connected to the GCU to receive the IDG output frequencies therefrom. The CPU is configured and adapted to determine an effective deviation across at least some of the plurality of IDG output frequencies for the given IDG operation period, and correlate the effective deviation to an IDG capability to determine a health of the IDG. | 2020-12-03 |
20200382032 | MOTOR CONTROL UNIT AND ELECTRIC POWER STEERING APPARATUS EQUIPPED WITH THE SAME - A motor control unit that vector-controls a 3-phase brushless motor based on dq-axes current command values, converts 3-phase current detection values of the 3-phase brushless motor into dq-axes feedback currents, performs feedbacks of the dq-axes feedback currents to the dq-axes current command values, converts dq-axes deviation voltages of the feedbacks into 2-phase duty command values, converts the 2-phase duty command values into 3-phase duty command values, and vector-controls the 3-phase brushless motor via an inverter, comprising a dq-axes dead time compensating section to calculate dq-axes dead time compensation values of the inverter and perform a dead time compensation, and a dq-axes disturbance estimating observer to input the dq-axes current command values, a motor rotational number, the dq-axes feedback currents and the deviation voltage, and calculate and output dq-axes disturbance compensation values, wherein the motor control unit estimates a disturbance, which cannot be compensated by said dead time compensation of said inverter, by adding with the dq-axes disturbance compensation values and said dq-axes deviation voltages. | 2020-12-03 |
20200382033 | Initial Position Offset Detection Apparatus and Method for Calibrating Permanent Magnet Motors - A low cost and efficient method and apparatus for calibrating high performance internal permanent magnet motors that involves starting from an initial estimation of the rotor position and improving the estimation incrementally by successively commanding various current vectors and making adjustments to the estimated initial position according to the rotor's physical reaction to such current vectors. | 2020-12-03 |
20200382034 | MOTOR CONTROL DEVICE AND MACHINE TOOL - A motor control device according to an aspect of the present disclosure controls a motor by switching between speed control and position control, and sets a maximum voltage applied to the motor during the position control to lower than a maximum voltage applied to the motor during the speed control. | 2020-12-03 |
20200382035 | Technique for On-The-Fly Start-Up of a Permanent Magnet AC Motor Without a Speed or Position Sensor - A method and apparatus are provided for controlling a sensorless multi-phase permanent magnet (PM) motor by sensing induced motor terminal voltages from the PM motor while the rotor is spinning, generating an input voltage vector signal from the plurality of induced motor terminal voltages, projecting the input voltage vector signal to a transformed voltage vector signal which does not include DC-offset components by using a Clarke transformation without a zero component that is applied to the input voltage vector signal, and estimating an initial rotor position of the rotor from the transformed voltage vector signal, wherein said sensing, projecting, and estimating are performed while a power converter for the sensorless multi-phase PM motor is disabled. | 2020-12-03 |
20200382036 | MOTOR CONTROL SYSTEM, MOTOR CONTROL APPARATUS, AND BEARING LIFETIME DIAGNOSIS METHOD - A motor control system includes a motor and a motor control circuitry. The motor includes a rotation axis and a bearing rotatably supporting the rotation axis. The motor control circuitry is configured to control the motor. The motor control circuitry includes a driving time adding circuit configured to add up a driving time of the motor to obtain an accumulated driving time of the motor, a remaining lifetime calculation circuit configured to calculate a remaining lifetime of the bearing based on a lifetime of the bearing and the accumulated driving time, and a warning outputting circuit configured to output warning information when the remaining lifetime is equal to or less than a threshold. | 2020-12-03 |
20200382037 | CONTROLLER OF ROTARY AXIS - A controller of a rotary axis includes: a storage unit that stores data of a braking distance for each rotation number of the rotary axis and provides a current braking distance S | 2020-12-03 |
20200382038 | 2-PHASE OUTER RING SWITCHED RELUCTANCE MOTOR FOR LOW-SPEED AND HIGH-FLOW RATE FAN - A 2-phase outer ring switched reluctance motor is suitable for use as a low-speed and high-flow rate fan, causes a difference in electrical angle of 180° when two armatures are fitted and coupled along an axial direction at the upper and lower sides thereof one by one and eliminates the difference in electrical angle when two outer ring rotors are fitted and coupled along an axial direction at the upper and lower sides thereof one by one, so as to enable the same to be easily assembled into a 2-phase motor and ensure a firm assembled state, simplifies a structure for detecting an excitation section by modularization in which sensors are provided at each armature and objects to be sensed are provided for each outer ring rotor, and escapes from an unstartable state by using a forward rotation sensor and a reverse rotation sensor. | 2020-12-03 |
20200382039 | CONTROL DEVICE FOR POLE-NUMBER SWITCHING ELECTRIC MOTOR - A control device for a pole-number switching electric motor applied to a system including an electric motor capable of switching a number of poles, and an inverter electrically connected to stator windings of the electric motor; includes: a basic operation unit configured to operate the inverter to control a current amplitude which is magnitude of a current vector flowing in the stator winding, and a switching operation unit configured to operate the inverter to reduce the current amplitude before switching and increase the current amplitude after switching. The switching operation unit, the pole number switching period, operates the inverter so that a total value of the current amplitude before switching and the current amplitude after switching does not exceed a limiting current value. | 2020-12-03 |
20200382040 | CONTROL DEVICE OF MULTI-PHASE ROTATING MACHINE - Two systems of individually-provided arithmetic units in a control device of a multi-phase rotating machine perform control calculation for a control of electric current flowing from power converters to the multi-phase windings. The arithmetic units of the respective systems communicate information via inter-system communication at least in one direction, and perform current control calculation of the electric current flowing in the multi-phase windings of a subject system in a cycle shorter than a communication cycle of the inter-system communication, and calculate a decoupling control amount of the electric current flowing in the multi-phase windings of the subject system, for a decoupling control of a voltage generated in the multi-phase windings of the subject system by the electric current flowing in the multi-phase windings of an other system by using an estimated current that is calculated based on a current instruction value of the subject system or of the other system. | 2020-12-03 |
20200382041 | HIGH VOLTAGE CONVERTER FOR USE AS ELECTRIC POWER SUPPLY - An electric power supply is disclosed having high-voltage, direct-current (HVDC) circuitry comprising one or more DC pre-charge capacitors and one or more power transistor switches, the HVDC circuitry configured to receive high-voltage, direct-current (HVDC) input power of about 320 volts and/or greater and convert the HVDC input power to multi-phase, high-voltage, alternating-current (HVAC) output power of about 320 volts and/or greater; and low-voltage, direct current (LVDC) circuitry adapted and configured to operate on low-voltage, direct-current, wherein the LVDC circuitry is configured to control and monitor the multi-phase HVAC output power. The electric power supply is further configured to operate in reverse and convert received multiphase HVAC input power to HVDC output power. | 2020-12-03 |
20200382042 | CURRENT DETECTION DEVICE AND ELECTRIC POWER STEERING DEVICE - A current detection device ( | 2020-12-03 |
20200382043 | DRIVE CONTROL DEVICE AND MOTOR DEVICE - A drive control device for a motor that is driven by an inverter, the drive control device including a control circuit. The control circuit includes a variable gain amplifier that outputs a first voltage value indicating a current value acquired from the inverter, a comparator that compares the first voltage value acquired from the variable gain amplifier and a reference voltage value, and an overcurrent detection processor that stops driving the motor when the first voltage value exceeds the reference voltage value as a result of comparison by the comparator. | 2020-12-03 |
20200382044 | ROTATION ANGLE DETECTION DEVICE AND AC ROTATING MACHINE CONTROL DEVICE - Provided is a rotation angle detection device, including: a rotation angle sensor; an input circuit configured to output a rotation angle signal and an abnormality signal; a calculation processing unit con tired to calculate a rotation angle calculation value and a rotation speed calculation value based on a rotation angle detection value at a predetermined preset calculation timing; and a rotation angle estimation processing unit configured to calculate a rotation angle estimation value after the calculation timing based on the rotation angle calculation value and the rotation speed calculation value. When the abnormality signal is received, the calculation processing unit calculates the rotation angle calculation value and the rotation speed calculation value based on the rotation angle estimation value, in place of the rotation angle detection value. | 2020-12-03 |
20200382045 | BATTERY PACK AND BATTERY CHARGER SYSTEM - A battery pack and charger system includes a first battery pack having a first set of battery cells and configured to provide only a first operating voltage and a second battery pack having a second set of battery cells and configured to provide the first operating voltage and a second operating voltage that is different from the first operating voltage and a battery pack charger configured to be able to charge the first battery pack and the second battery pack. | 2020-12-03 |
20200382046 | System and Method for Controlling Harmonics in a Renewable Energy Power System - A method for operating a power system connected to a power grid includes providing an active filter in the converter power path. Further, the method includes determining a change in attenuation of harmonics of the power system over a predetermined frequency spectrum that is needed to comply with one or more grid code requirements of the power grid. Thus, the method includes actively controlling, via a controller, the active filter to provide the change to the attenuation of the harmonics of the power system so as to mitigate the harmonics of the power system. | 2020-12-03 |
20200382047 | ELECTRIC POWER STEERING DEVICE - An electric power steering device includes: an electric motor including multi-phase coils, which is configured to cause a steering mechanism of a vehicle to rotate; and a control unit including a plurality of inverter circuits configured to drive the electric motor, wherein the inverter circuits include capacitors for smoothing, which are small in number than phase number of the electric motor, and the capacitors are arranged between bridge circuits of respective phases of the inverter circuits. | 2020-12-03 |
20200382048 | THERMAL RADIATION LIGHT SOURCE - The present invention provides a thermal radiation light source that allows a wider range of material choices than those of conventional techniques, so that light having a desired peak wavelength can easily be obtained. A thermal radiation light source | 2020-12-03 |
20200382049 | PHOTOVOLTAIC MODULE MOUNTING ASSEMBLY - The present disclosure provides photovoltaic (PV) module mounting systems and bracket assemblies for securing PV modules to roofs. The photovoltaic module mounting systems may include a roofing panel having a base layer, a flashing panel coupled along an edge of the roofing panel, and a bracket assembly coupled to the roofing panel, where the bracket assembly includes a bracket and a clip, and where the clip is configured to couple with an edge feature of a PV module to secure the PV module to the roofing panel. | 2020-12-03 |
20200382050 | MOUNTING BRACKET AND MOUNTING ASSEMBLY OF PHOTOVOLTAIC MODULE - Embodiments of the present disclosure disclose a mounting bracket and a mounting assembly of a photovoltaic module. The mounting bracket includes: a bracket body; a vertical plate, whose bottom end is fixed to a top surface of the bracket body; and a transverse plate, transversely fixed to a top end of the vertical plate. A first sliding groove and a second sliding groove opposite in open direction are formed between the transverse plate, the vertical plate and the bracket body. A depth of the first sliding groove is greater than that of the second sliding groove. In the mounting bracket and the mounting assembly of the photovoltaic module provided by the embodiments of the present disclosure, the first sliding groove and the second sliding groove are formed on the bracket body by the transverse plate and the vertical plate, and the photovoltaic module may be directly mounted by way of fitting between the first sliding groove and the second sliding groove and the photovoltaic module. Therefore, the photovoltaic module is stably mounted, with the mounting time saved. Furthermore, in the mounting process, it is unnecessary to apply excessive force to the photovoltaic module, and thus fracture of the photovoltaic module may be avoided. | 2020-12-03 |
20200382051 | SYSTEM FOR REDIRECTING SUNLIGHT TO A MOBILE PLATFORM - A system for redirecting light to a mobile platform includes a satellite and a mobile platform including a first RF antenna that transmits a trajectory data for the mobile platform, and a photovoltaic cell that converts light into electrical energy. The satellite includes a second RF antenna that receives the trajectory data, and a processor coupled to the second RF antenna. The processor computes a target position of the mobile platform based on the trajectory data, and instructs a diffuser system to generate the beam of light and direct the beam to the target position. | 2020-12-03 |
20200382052 | HOMOGENEOUS TRANSPARENT COATED GREENHOUSE ELECTRICAL GENERATING DEVICES, AND INTERNAL AND EXTERNAL ELECTRICAL INTERCONNECTIONS - A greenhouse electricity-generating system includes a homogeneous transparent electricity-generating glass or plastic device (TEGD) and an electrical junction box electron transfer device (E-JBTD). The homogeneous transparent electricity-generating glass or plastic device (TEGD) supplies an even homogeneous supply of light, and the electrical module junction box transfer device (E-JBTD) is a water and weather tight connection that supplies electricity safely and securely. The electrical module junction box transfer device (E-JBTD) maintains a secure electrical connection between modules or homogeneous transparent electricity-generating glass or plastic devices (TEGD) and may not be removed after installation and reinstalled on another module or homogeneous transparent electricity-generating glass or plastic device (TEGD). | 2020-12-03 |
20200382053 | JUNCTION BOX FOR A PHOTOVOLTAIC MODULE MOUNTING ASSEMBLY - The present disclosure provides junction boxes for use with roof-mounted photovoltaic (PV) modules. The junction boxes may include a housing having a plurality of sides, a bottom having an aperture, and a top edge having a top opening, where the top edge has a lip disposed around the top edge and projecting upward from the top edge. The junction boxes may further include a lid removably coupled to the top edge of the housing and a seal disposed on an outer surface of the bottom of the housing. | 2020-12-03 |
20200382054 | SHINGLED SOLAR CELL WITH LOW FINGER PITCH - A shingled solar cell of High Density Module (HDM) design, exhibits reduced finger pitch (and hence increased finger count) relative to a corresponding non-HDM solar cell. A shingled HDM solar cell bearing a sole front side bus bar, may be fabricated by singulation from a larger non-HDM workpiece bearing a plurality of front side bus bars. Embodiments recognize that according to such a singulation-based HDM fabrication process, the resulting effective finger length (L | 2020-12-03 |
20200382055 | PHOTOELECTRIC CONVERSION MODULE AND PHOTOELECTRIC CONVERSION MODULE ARRAY - A photoelectric conversion module includes a substrate, a photoelectric conversion element mounted on the substrate, and a connector mounted on the substrate, the connector including a terminal that is electrically coupled to the photoelectric conversion element, wherein the connector is configured such that coupling the connector to a connector of another photoelectric conversion module causes the photoelectric conversion element to be electrically coupled to a photoelectric conversion element of the another photoelectric conversion module. | 2020-12-03 |
20200382056 | SOLAR POWER GENERATION FAULT DIAGNOSIS DEVICE AND SOLAR POWER GENERATION FAULT DIAGNOSIS METHOD - A solar power generation fault diagnosis device includes one or more processors configured to perform the following: receiving signals indicating an electrical quantity output from a solar cell to acquire quantity information indicating the electrical quantity output from the solar cell; calculating a first quantity value relating to the electrical quantity based on the quantity information; implementing a low-pass filter unit so as to output a second quantity value from the first quantity value; determining a state of the solar cell based on a result of comparison between the first quantity value and the second quantity value; and outputting the determined state of the solar cell. | 2020-12-03 |
20200382057 | OPTOCOUPLER EMULATING INPUT STAGE FOR DIGITAL ISOLATORS - A digital isolator comprising a set of bipolar transistors and an inductor capacitor (LC) oscillator coupled to the set of bipolar transistors in series, wherein the LC oscillator is configured to be turned on and off based on the current applied to the set of bipolar transistors or the LC oscillator and generate a set of differential signals based on the current flowing through the set of bipolar transistors and mimicking the operational characteristics of an optocoupler. | 2020-12-03 |
20200382058 | POWER EFFICIENT RADIO MIXERS - Embodiments of power efficient radio mixers are provided. A generalized impedance matched low-voltage active mixer circuit technique, which utilizes a plurality of commutator cells and transformers, is disclosed. The low voltage active mixer function is coupled to an impedance matched amplifier allowing for insertion of image rejection filtering between the amplifier and the mixing function. The commutator cells can be driven in parallel by common local oscillator (LO) and intermediate frequency (IF) ports combined in parallel to yield highly linear mixers. A multi-channel receiver with a common impedance matched radio frequency (RF) amplifier driving a plurality of commutator cells with multiple LOs and IFs is also disclosed. | 2020-12-03 |
20200382059 | IMAGE REJECTION MIXER AND COMMUNICATION CIRCUIT - An image rejection mixer includes a delay circuit for delaying one of first signals divided by a distribution circuit and a second signal provided to a second mixing circuit by the same delay amount d, or delaying the other one of the first signals divided by the distribution circuit and the second signal provided to a first mixing circuit by the same delay amount d. | 2020-12-03 |
20200382060 | LOCAL OSCILLATOR LEAKAGE DETECTING AND CANCELLATION - A mixer circuitry comprises a mixer, a local oscillator (LO) leakage detector, a digital LO leakage cancellation controller and a DAC arrangement. The mixer is configured to mix a first LO signal having an LO frequency f | 2020-12-03 |
20200382061 | ENVELOPE TRACKING AMPLIFIER APPARATUS - An envelope tracking (ET) amplifier apparatus is provided. The ET amplifier apparatus includes an ET integrated circuit (IC) (ETIC) and a distributed ETIC (DETIC) coupled to the ETIC. The DETIC may be configured to provide a distributed voltage to a distributed amplifier circuit for amplifying a distributed radio frequency (RF) signal. In examples discussed herein, the ETIC is configured to generate a low-frequency current, which can affect the distributed voltage, at a desired level based on a feedback signal received from the DETIC. The DETIC may be configured to generate the feedback signal based on an indication(s) related to the distributed voltage. By dynamically adjusting the low-frequency current, and thus the distributed voltage, based on the feedback signal, it may be possible to maintain operating efficiency of the distributed amplifier circuit across a wider range of modulation bandwidth with minimal cost and/or size impact on the ET amplifier apparatus. | 2020-12-03 |
20200382062 | ENVELOPE TRACKING AMPLIFIER APPARATUS - An envelope tracking (ET) amplifier apparatus is provided. The ET amplifier apparatus includes an ET integrated circuit (ETIC) having a number of voltage circuits coupled to a common port and configured to generate an ET voltage(s) based on a number of ET target voltages, respectively. In examples discussed herein, a selected voltage circuit(s) in the ETIC receives a maximum ET target voltage among all the ET target voltages and is configured to generate a reference ET voltage based on the maximum ET target voltage. As such, another voltage circuit(s), which happens to receive the maximum ET target voltage, may simply treat the reference ET voltage as a respective ET voltage(s) instead of generating the respective ET voltage(s). As a result, it may be possible to opportunistically turn off or reduce functionality of the voltage circuit(s) to help reduce peak battery current and improve heat dissipation in the ET amplifier apparatus. | 2020-12-03 |
20200382063 | Amplifier Switching Control Systems And Methods - A first module is configured to, based on an input sample, determine a first duty cycle. A second module is configured to, based on a battery voltage and the first duty cycle, determine a second duty cycle. A third module is configured to: set a scalar value based on at least one of a battery current, an amplitude of the input sample, the second duty cycle, and an output voltage; and generate a start signal at a rate equal to a predetermined rate multiplied by the scalar value. A fourth module is configured to set a third duty cycle based on the second duty cycle and the scalar value. A fifth module is configured to generate a PWM output based on the start signal and the third duty cycle. A sixth module is configured to apply power to gates of FETs of a voltage converter based on the PWM output. | 2020-12-03 |
20200382064 | FIBER-OPTIC NODE WITH FORWARD DATA CONTENT DRIVEN POWER CONSUMPTION - Methods and systems for modulating an amplifier power supply to efficiently attain amplified RF output power with much lower power dissipation than existing amplifiers. | 2020-12-03 |
20200382065 | ENVELOPE TRACKING AMPLIFICATION ARCHITECTURE - The present disclosure relates to an envelope tracking (ET) amplification architecture, which includes a power amplifier (PA) block configured to amplify a radio frequency (RF) input signal and provide an RF output signal, and an ET voltage block configured to provide modulated voltages to the PA block as power supplies. Herein, the modulated voltages are provided based on a configuration of the PA block and from one pulsed ramp signal, which contains envelope information of the RF input signal. The modulated voltages are eligible to have at least one of a time delay difference, an amplitude difference, and a phase difference. | 2020-12-03 |
20200382066 | ENVELOPE TRACKING INTEGRATED CIRCUIT - An envelope tracking integrated circuit having a tracker circuitry configured to generate a modulated supply voltage for a radio frequency power amplifier in response to an envelope of a radio frequency signal to be amplified by the radio frequency power amplifier is disclosed. Also included is a charge pump system configured to generate a tracker supply voltage for the tracker circuitry. Further included is an analog multiplexer configured to receive the tracker supply voltage and a battery source voltage and output a selected one of the tracker supply voltage and the battery source voltage in response to a voltage select signal. A digital processor further included in the envelope tracking integrated circuit is configured to control portions of the tracker circuitry and be powered by the selected one of the tracker supply voltage and the battery source voltage during transmission gaps when the radio frequency signal is not transmitted. | 2020-12-03 |
20200382067 | DC COUPLED AMPLIFIER HAVING PRE-DRIVER AND BIAS CONTROL - A dc coupled amplifier includes a pre-driver, and amplifier and a bias control circuit. The pre-driver is configured to receive one or more input signals and amplify the one or more input signals to create one or more pre-amplified signals. The amplifier has cascode configured transistors configured to receive and amplify the one or more pre-amplified signals to create one or more amplified signals, the amplifier further having an output driver termination element. The bias control circuit is connected between the pre-driver and the amplifier, the bias control circuit receiving at least one bias current from the output driver termination element of the amplifier, wherein the pre-driver, the amplifier and the bias control circuit are all formed on a same die. | 2020-12-03 |
20200382068 | AMPLIFICATION APPARATUS AND METHOD - Amplification device and processes capable of miniaturization in a device for performing linear amplification and switching amplification operations on incoming signals are provided. The amplifying device includes a first amplifying unit for amplifying an input signal and outputting a first output signal, the input switch unit connected in parallel with the first amplifying unit for performing a switching operation by an input signal and outputting a switch output signal, and a second amplifying unit for amplifying a first output signal or a switch output signal and outputting a second output signal, and the first amplifying unit or the input switch unit operates based on the type of the input signal. | 2020-12-03 |
20200382069 | IMPROVED EFFICIENCY, SYMMETRICAL DOHERTY POWER AMPLIFIER - Apparatus and methods for an improved-efficiency Doherty amplifier are described. The Doherty amplifier may include a two-stage peaking amplifier that transitions from an “off” state to an “on” state later and more rapidly than a single-stage peaking amplifier used in a conventional Doherty amplifier. The improved Doherty amplifier may operate at higher gain values than a conventional Doherty amplifier, with no appreciable reduction in signal bandwidth. | 2020-12-03 |
20200382070 | QUADRATURE COMBINED DOHERTY AMPLIFIERS - Apparatus and methods for quadrature combined Doherty amplifiers are provided herein. In certain embodiments, a separator is used to separate a radio frequency (RF) input signal into a plurality of input signal components that are amplified by a pair of Doherty amplifiers operating in quadrature. Additionally, a combiner is used to combine a plurality of output signal components generated by the pair of Doherty amplifiers, thereby generating an RF output signal exhibiting quadrature balancing. | 2020-12-03 |
20200382071 | BALANCED-TO-DOHERTY MODE SWITCHABLE POWER AMPLIFIER - A balanced-to-Doherty (B2D) mode-reconfigurable power amplifier (PA) has the capability of maintaining high linearity and high efficiency against load mismatch. The reconfigurable PA includes a switch to alternatively connect to a pre-determined resistive load or a pre-determined pure reactive load (jX), i.e., short, open, or finite reactance between an output quadrature coupler and ground. The biasing of Doherty mode is adaptive dependent on the value of reactive loading (jX). The Doherty operation of this PA is based on an architecture configured from a balanced amplifier, e.g., a quasi-balanced amplifier. | 2020-12-03 |
20200382072 | AMPLIFIER CIRCUIT WITH HIGH-ORDER DAMPING CIRCUIT AND THE HIGH-ORDER DAMPING CIRCUIT - An amplifier circuit with in-band gain degradation compensation is shown. The amplifier circuit has an input-stage amplifier, at least one intermediate-stage amplifier, and an output-stage amplifier cascaded between an input port and an output port of the amplifier circuit. A compensation capacitor is coupled between the output port of the amplifier circuit and an output port of the input-stage amplifier. A high-order damping circuit is coupled to an output port of the intermediate-stage amplifier. | 2020-12-03 |
20200382073 | DISABLED MODE ERROR REDUCTION FOR HIGH-VOLTAGE BILATERAL OPERATIONAL AMPLIFIER CURRENT SOURCE - Provided are embodiments that include a circuit configured to operate in a disabled mode error reduction for high-voltage bilateral operational amplifier current source. The circuit includes an operational amplifier, and a switching circuit coupled to the operation amplifier, wherein the switching circuit is operable in a normal mode and a disabled mode, wherein the disabled mode reduces error current at the output of the operational amplifier. Also provided are embodiments for a method for operating a circuit in a disabled mode for error reduction. | 2020-12-03 |
20200382074 | ENVELOPE TRACKING AMPLIFIER APPARATUS - An envelope tracking (ET) amplifier apparatus is provided. The ET amplifier apparatus includes a distributed ET integrated circuit (DETIC) configured to generate a distributed ET voltage. The DETIC may be coupled to a higher-bandwidth (HB) amplifier circuit and a lower-bandwidth (LB) amplifier circuit configured to amplify an HB radio frequency (RF) signal and an LB RF signal, respectively. In examples discussed herein, the DETIC may be configured to selectively provide the ET voltage to one of the HB amplifier circuit and the LB amplifier circuit, depending on which of the HB amplifier circuit and the LB amplifier circuit is activated. By providing the DETIC in proximity to the HB amplifier circuit and the LB amplifier circuit, it may be possible to reduce potential distortion to the HB RF signal and the LB RF signal, without significantly increasing footprint of the ET amplifier apparatus. | 2020-12-03 |
20200382075 | RF POWER TRANSISTOR CIRCUIT - A radio frequency (RF) power transistor circuit includes a power transistor and a decoupling circuit. The power transistor has a control electrode coupled to an input terminal for receiving an RF input signal, a first current electrode for providing an RF output signal at an output terminal, and a second current electrode coupled to a voltage reference. The decoupling circuit includes a first inductive element, a first resistor, and a first capacitor coupled together in series between the first current electrode of the power transistor and the voltage reference. The decoupling circuit is for dampening a resonance at a frequency lower than an RF frequency. | 2020-12-03 |
20200382076 | TRANSISTOR AMPLIFIER - A transistor amplifier includes at least one differential pair of transistors and a plurality of transformers having a primary winding and a tapped secondary winding. The secondary winding is connected across emitters or sources of each transistor pair. The tap of each secondary has a current source. The primary windings of the plurality of transformers are connected in series. The transistor bases or gates are alternating current (AC) grounded. The collector or drain terminal pairs are connected in parallel. The transistor amplifier exhibits improved input impedance and improved linearity. | 2020-12-03 |
20200382077 | AMPLIFIER - An amplifier is configured in such a way that a first capacitor resonates at the frequency of a second harmonic wave included in a signal outputted from an amplifying element, a circuit including a second transmission line, the first capacitor, and a second capacitor resonates at the frequency of a third harmonic wave included in the signal outputted from the amplifying element, and also matches the impedance for a fundamental wave together with an impedance matching circuit. | 2020-12-03 |
20200382078 | AVOIDING CLIPPING IN AUDIO POWER DELIVERY BY PREDICTING AVAILABLE POWER SUPPLY ENERGY - A power output circuit supplies an audio power output signal that is adjusted to prevent clipping when needed based on an estimate of available energy from the power supply supplying the power output circuit. The power output circuit may be an audio power output circuit that generates an audio power output signal from samples of an audio program that are stored in a buffer. A processing block determines an energy requirement for producing the audio power output signal from the audio program and adjusts an amplitude of the audio power output signal in conformity with the determined energy requirement and an available energy determined for the power supply so that the audio power output signal is reproduced without clipping of the audio power output signal. | 2020-12-03 |
20200382079 | AUDIO AMPLIFIERS - An electronic device comprises a speaker protection module ( | 2020-12-03 |
20200382080 | HIGH-FREQUENCY AMPLIFIER CIRCUIT - A high-frequency amplifier circuit has a source-grounded first transistor that amplifies a high-frequency input signal, a gate-grounded second transistor that further amplifies the amplified signal, a first inductor and a first reference voltage node, a second inductor connected between a first node and a second reference voltage node, a third transistor that is connected between the first node and a drain of the second transistor, is turned on at the time of selecting the first mode to transmit the amplified signal to the first node, and is turned off when selecting a second mode to disconnect the first node from the drain of the second transistor, a bypass path that bypasses the high-frequency input signal from an input node of the high-frequency input signal to the first node at the time of selecting the second mode, and a bypass switching circuit that is connected on the bypass path. | 2020-12-03 |
20200382081 | RADIO-FREQUENCY CIRCUIT AND COMMUNICATION DEVICE - A radio-frequency circuit includes a first switch which includes a common terminal, a first selection terminal, and a second selection terminal, and switches between connecting the common terminal and the first selection terminal and connecting the common terminal and the second selection terminal; a first low-noise amplifier including an input terminal connected to the first selection terminal, and a second low-noise amplifier including an input terminal connected to the second selection terminal. The frequency band in which the first low-noise amplifier amplifies a radio-frequency signal by at least a predetermined gain includes the frequency band in which the second low-noise amplifier amplifies a radio-frequency signal by at least a predetermined gain. | 2020-12-03 |
20200382082 | POWER AMPLIFIER CIRCUIT - A power amplifier circuit includes a first transistor configured to receive a first signal at a base, amplify the first signal, and output a second signal from a collector; and a bias circuit configured to supply a bias current to the base of the first transistor. The bias circuit includes a second transistor configured to supply a bias current to the base of the first transistor, a third transistor including a base connected to a base of the second transistor and a collector connected to a collector of the second transistor, and a fourth transistor including a base connected to an emitter of the third transistor and a collector connected to an emitter of the second transistor and configured to draw at least part of the bias current. | 2020-12-03 |
20200382083 | POWER AMPLIFIER AND COMPOUND SEMICONDUCTOR DEVICE - A power amplifier includes initial-stage and output-stage amplifier circuits, and initial-stage and output-stage bias circuits. The initial-stage amplifier circuit includes a first high electron mobility transistor having a source electrically connected to a reference potential, and a gate to which a radio-frequency input signal is inputted, and a first heterojunction bipolar transistor having an emitter electrically connected to a drain of the first high electron mobility transistor, a base electrically connected to the reference potential in an alternate-current fashion, and a collector to which direct-current power is supplied and from which a radio-frequency signal is outputted. The output-stage amplifier circuit includes a second heterojunction bipolar transistor having an emitter electrically connected to the reference potential, a base to which the radio-frequency signal outputted from the first heterojunction bipolar transistor is inputted, and a collector to which direct-current power is supplied and from which a radio-frequency output signal is outputted. | 2020-12-03 |
20200382084 | AMPLIFIER WITH AN AT LEAST SECOND ORDER FILTER IN THE CONTROL LOOP - A Class D amplifier having an integrating primary amplifier with an internal feedback, the amplifier further comprising a feedback loop with a filter of at least second order. | 2020-12-03 |
20200382085 | Amplifier Circuit - An amplifier circuit includes a potential relation between a common emitter amplifier circuit (amplifier circuit body) including an NPN transistor (bipolar transistor) and a clamp circuit which maintains a potential relation between a base-collector of the NPN transistor of the common emitter amplifier circuit. The clamp circuit includes a level shift circuit and a clamp diode for suppressing a decrease in the collector potential of the NPN transistor of the common emitter amplifier circuit. | 2020-12-03 |
20200382086 | AMPLIFIER CIRCUIT, ADDER CIRCUIT, RECEPTION CIRCUIT, AND INTEGRATED CIRCUIT - There are an amplifier circuit which includes a first current source that is connected to a power supply line to which a first electric potential is supplied, a differential input circuit that is connected between the first current source and a first node and configured to receive a differential input signal, a second current source that is connected between a power supply line to which a second electric potential is supplied and the first node, and a load circuit that is connected between a power supply line to which the first electric potential is supplied and a second node, and an inductor circuit is further connected between the first node and the second node. Thereby, the amplifier circuit achieves both lower voltage and linearity. | 2020-12-03 |
20200382087 | Variable Gain Amplifier - A variable gain amplifier circuit is disclosed. In one embodiment, an amplifier circuit includes first and second stages. Each stage includes one or more inverter pairs, with one inverter of each pair coupled to receive an inverting component of a differential signal and the other inverter of the pair coupled to receive a non-inverting component. The first stage receives a differential input signal and produces an intermediate differential signal. The second stage receives the intermediate differential signal and produces a differential output signal, the differential output signal being an amplified version of the differential input signal. | 2020-12-03 |
20200382088 | APPARATUS AND METHODS FOR VECTOR MODULATOR PHASE SHIFTERS - Apparatus and methods for vector modulator phase shifters are provided. In certain embodiments, a phase shifter includes a quadrature filter that filters a differential input signal to generate a differential in-phase (I) voltage and a differential quadrature-phase (Q) voltage, an in-phase variable gain amplifier (I-VGA) that amplifies the differential I voltage to generate a differential I current, a quadrature-phase variable gain amplifier (Q-VGA) that amplifies the differential Q voltage to generate a differential Q current, and a current mode combiner that combines the differential I voltage and the differential Q voltage to generate a differential output signal. A phase difference between the differential output signal and the differential input signal is controlled by gain settings of the I-VGA and the Q-VGA. | 2020-12-03 |
20200382089 | Impedence Matching Conductive Structure for High Efficiency RF Circuits - The present invention includes a method of making a RF impedance matching device in a photo definable glass ceramic substrate. A ground plane may be used to adjacent to or below the RF Transmission Line in order to prevent parasitic electronic signals, RF signals, differential voltage build up and floating grounds from disrupting and degrading the performance of isolated electronic devices by the fabrication of electrical isolation and ground plane structures on a photo-definable glass substrate. | 2020-12-03 |
20200382090 | INDUCTOR ASSEMBLY AND APPARATUS WITH IMPEDANCE MATCHING NETWORK - Examples include an inductor assembly and an apparatus comprising and a transistor amplifier and an impedance matching network. The impedance matching network comprises a circuit board, an inductance block and a screw. The inductance block has a first leg mounted on a first contact plate of the circuit board and a second leg mounted on a second contact plate of the circuit board. The screw is screwable into the inductance block such that a threaded portion of the screw engages with threaded portions of the first leg and the second leg to form a conductive path connecting the first contact plate with the second contact plate. The length of the conductive path and a value of the inductance of the conductive path are adjustable by adjusting a height of the screw within the inductance block. | 2020-12-03 |
20200382091 | BULK ACOUSTIC WAVE RESONATORS HAVING CONVEX SURFACES, AND METHODS OF FORMING THE SAME - In bulk acoustic wave (BAW) resonators having convex surfaces, an example BAW resonator includes a first electrode, a piezoelectric layer formed on the first electrode, the piezoelectric layer having a convex surface, and a second electrode formed on the convex surface. An example integrated circuit (IC) package includes a BAW resonator in the IC package, the BAW resonator including a piezoelectric layer having a convex surface. | 2020-12-03 |
20200382092 | METHODS OF MAKING ACOUSTIC WAVE DEVICES - An acoustic wave device system with its piezoelectric layer originating from a single crystal piezoelectric wafer/substrate is invented along with sets of detailed process steps to fabricate such a device using wafer-to-wafer and/or die-to-wafer bonding technologies. The proposed device system is particularly good to make bulk acoustic wave (BAW) devices. Methods allowing the single crystal piezoelectric wafer/substrate to be re-used are also given. The proposed methods include detailed process steps to allow heterogeneous integration of electrical chips into the system in a very cost efficient manner. The invention provides a practical and low-cost approach to fabricate the radio frequency (RF) front end chip incorporating RF filters and electronic components integrated into a small footprint which is particularly useful for mobile device and RF stations. | 2020-12-03 |
20200382093 | TRANSVERSELY EXCITED FILM BULK ACOUSTIC RESONATOR WITH RECESSED INTERDIGITAL TRANSDUCER FINGERS - Acoustic resonator devices, filters, and methods are disclosed. An acoustic resonator includes a substrate and a piezoelectric plate having front and back surfaces, the back surface attached to a surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm that spans a cavity in the substrate. An interdigital transducer (IDT) is formed on the front surface of the piezoelectric plate such that interleaved fingers of the IDT are disposed on the diaphragm. The IDT is configured to excite a primary acoustic mode in the diaphragm in response to a radio frequency signal applied to the IDT. At least one finger of the IDT is disposed in a groove in the diaphragm. | 2020-12-03 |
20200382094 | SOLIDLY-MOUNTED TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR WITH RECESSED INTERDIGITAL TRANSDUCER FINGERS - Acoustic resonator devices, filters, and methods are disclosed. An acoustic resonator includes a substrate, a piezoelectric plate having front and back surfaces, and an acoustic Bragg reflector between a surface of the substrate and the back surface of the piezoelectric plate. An interdigital transducer (IDT) is formed on the front surface of the piezoelectric plate. The IDT is configured to excite a shear primary acoustic mode in the piezoelectric plate in response to a radio frequency signal applied to the IDT. At least one finger of the IDT is disposed in a groove in the piezoelectric plate. | 2020-12-03 |
20200382095 | VIBRATOR DEVICE AND ELECTRONIC APPARATUS - A vibrator device includes a silicon substrate having a through hole, a first terminal placed on a first surface of the silicon substrate, a second terminal placed on a second surface opposite to the first surface of the silicon substrate, a wire passing the through hole and electrically coupling the first terminal and the second terminal, a resin layer placed between the wire and an inner wall defining the through hole, a silicon oxide layer placed between the resin layer and the inner wall, and a vibrator element bonded to the first terminal. | 2020-12-03 |
20200382096 | PIEZOELECTRIC RESONATOR DEVICE - A through hole formed in an AT-cut crystal plate includes an inclined surface ( | 2020-12-03 |
20200382097 | METHOD FOR GENERATING HIGH ORDER HARMONIC FREQUENCIES AND MEMS RESONATOR - A method for generating high order harmonic frequencies includes: providing a piezoelectric resonant film; and inputting a driving signal with a single tone frequency for driving the piezoelectric resonant film to oscillate in a non-linear region so as to generate a plurality of high order harmonic frequencies. Therefore, the quantity of the high order harmonic frequencies can be adjusted by applying an electrical controlling method. | 2020-12-03 |
20200382098 | FILTER DEVICES HAVING HIGH POWER TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATORS - There is disclosed acoustic resonators and filter devices. An acoustic resonator includes a substrate having a surface and a Z-cut piezoelectric plate having parallel front and back surfaces, the back surface attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm that spans a cavity in the substrate. An interdigital transducer (IDT) is formed on the front surface of the single-crystal piezoelectric plate such that interleaved fingers of the IDT are disposed on the diaphragm. The IDT is configured to excite a primary acoustic mode in the diaphragm in response to a radio frequency signal applied to the IDT. A thickness of the interleaved fingers of the IDT is greater than or equal to 0.85 times a thickness of the diaphragm. | 2020-12-03 |
20200382099 | FILM BULK ACOUSTIC RESONATOR (FBAR) DEVICES FOR HIGH FREQUENCY RF FILTERS - Techniques are disclosed for forming high frequency film bulk acoustic resonator (FBAR) devices having multiple resonator thicknesses on a common substrate. A piezoelectric stack is formed in an STI trench and overgrown onto the STI material. In some cases, the piezoelectric stack can include epitaxially grown AlN. In some cases, the piezoelectric stack can include single crystal (epitaxial) AlN in combination with polycrystalline (e.g., sputtered) AlN. The piezoelectric stack thus forms a central portion having a first resonator thickness and end wings extending from the central portion having a different resonator thickness. Each wing may also have different thicknesses. Thus, multiple resonator thicknesses can be achieved on a common substrate, and hence, multiple resonant frequencies on that same substrate. The end wings can have metal electrodes formed thereon, and the central portion can have a plurality of IDT electrodes patterned thereon. | 2020-12-03 |
20200382100 | ELECTROMECHANICAL RESONATORS BASED ON METAL-CHALCOGENIDE NANOTUBES - This invention provides electromechanical resonators based on metal chalcogenide nanotubes. The invention further provides methods of fabrication of electromechanical resonators and methods of use of such electromechanical resonators. | 2020-12-03 |
20200382101 | TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR - Acoustic resonator devices and filters are disclosed. A piezoelectric plate is attached to a substrate, a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. A first conductor pattern is formed on a surface of the piezoelectric plate. The first conductor pattern includes interleaved fingers of an interdigital transducer disposed on the diaphragm, and a first plurality of contact pads. A second conductor pattern is formed on a surface of a base, the second conductor pattern including a second plurality of contact pads. Each pad of the first plurality of contact pads is directly bonded to a respective pad of the second plurality of contact pads. A ring-shaped seal is form between a perimeter of the piezoelectric plate and a perimeter of the base. | 2020-12-03 |
20200382102 | MULTIPLEXER, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE - A multiplexer includes a common terminal, a first acoustic wave filter having a first frequency band as a pass band, and having a first input/output terminal connected to the common terminal, a second acoustic wave filter having a second frequency band higher than the first frequency band as a pass band, and having a second input/output terminal connected to the common terminal, an inductance element, and a first capacitance element. The first acoustic wave filter has a parallel resonator of which one end is connected to the first input/output terminal and another end is connected to a ground electrode, and the first input/output terminal is connected to the common terminal via the inductance element, and the first capacitance element is connected between a signal path between the one end of the parallel resonator and the inductance element, and a ground electrode. | 2020-12-03 |
20200382103 | NOISE REDUCING RECEIVER - Disclosed is receiver for a noise limited system. A front-end circuit amplifies and band-limits an incoming signal. The amplification increases the signal swing but introduces both thermal and flicker noise. A low-pass band limitation reduces the thermal noise component present at frequencies above what is necessary for correctly receiving the transmitted symbols. This band limited signal is provided to the integrator circuit. The output of the integrator is equalized to reduce the effects of inter-symbol interference and then sampled. The samples are used to apply low frequency equalization (i.e., in response to long and/or unbalanced strings of symbols) to mitigate the effects of DC wander caused by mismatches between the number of symbols of each kind being received. | 2020-12-03 |
20200382104 | LOW POWER LATTICE WAVE FILTER SYSTEMS AND METHODS - Systems and methods for low power lattice wave filters include an input operable to receive a digital input signal having a first sample rate, a first processing branch including a first delay element operable to receive the digital input signal and output a delayed digital input signal, a second processing branch including a first adder operable to receive the digital input signal and subtract a delayed feedback signal to produce a difference signal, a second adder operable to combine the delayed digital input signal and the difference signal to produce an output signal, and wherein the second processing branch further includes a feedback path including a second delay element operable to receive the output signal and output the delayed feedback signal. In a multistage topology, a register is disposed between each stage and clocked to reduce ripple power. | 2020-12-03 |