Class / Patent application number | Description | Number of patent applications / Date published |
331167000 | L-C TYPE OSCILLATORS | 21 |
20080315966 | OSCILLATOR - An oscillation circuit induces a first inverter, a second inverter, a first inductive load, a second inductive load and a capacitive load. A first inverter and a second inverter receive a first signal and a second signal, and invert the first and the second signal to output a first inverted signal and a second inverted signal respectively. An output end of the first inverter is electrically connected to a first inductive load, and an output end of the second inverter is electrically connected to a second inductive load. Further, a capacitive load is electrically connected to the output end of the first inverter and the output end of the second inverter, so as to receive the first and the second inverted signal respectively. The capacitance of the capacitive load changes with a control signal. | 12-25-2008 |
20090002085 | 4Less-Xtaless, capless, indless, dioless TSOC design of SOC or 4Free-Xtalfree, capfree, indfree, diofree TSOC desigh of SOC - 4Less-Xtaless, Capless, Indless, Dioless TSOC Design of SOC or 4Free-Xtafree, Capfree, Indfree, Diofree TSOC Design of SOC is the True System On Chip Design of Security Of Community. Xtaless is Xtaless Clock Generator generating the reference clock having the superior quality of crystal clock without the on-board external crystal. Capless has the Capless Toggle and Capless LDVR. Capless Toggle is the de-bouncing circuit without the external on-board capacitor. Capless LDVR is the Low Drop Voltage Regulator having no external on-board capacitor. Indless is the Indless SM of Switch Mode Power Supply having no external on-board inductor. The Indless SM adopts the PHM of Pulse Hybrid Modulation of the PWM and PFM and making smooth load adaptive hybrid operations. Both LDVR and SM have the hybrid of the hybrid mode of digital and analog modes. Furthermore, with circuit configuration, the LDVR and SM can share the same driver. Dioless is the Dioless TRNG which the True Random Number Generator having no external Avalanche Diode. The Xtaless Clock Generator adopt the PVTNAH design which is Process, Voltage, Temperature, Noise, Aging and Humidity compensation design. The Xtaless Clock using LC resonator of which LC resonator is self-compensation LC resonator over the temperature and humidity. The Xtaless Clock using RC resonator of which RC resonator is self-compensation RC resonator over the temperature and humidity. The smart USB switch for SOC design can save the portable battery power. The Triple-Mode Camera for SOC design has the ultra-wide dynamic range for the still camera mode, video camera mode and surveillance camera mode. | 01-01-2009 |
20090153259 | DIGITALLY CONTROLLED OSCILLATOR (DCO) - A digitally controlled oscillator (DCO) includes a current generator which generates an electric current having a magnitude corresponding to an input signal, and a digitally controlled oscillating unit which generates an oscillating frequency based on an inductance which varies according to the magnitude of the electric current generated by the current generator. | 06-18-2009 |
20090184776 | OSCILLATOR DEVICE AND TRAMSMITTER MODULE USING SAME - An oscillator device includes a resonator including a coil and a capacitor connected to the coil in parallel; and an oscillator connected to the resonator. Electric waves are emitted from the coil to at least one receiving antenna of the receiver while the oscillator device changes position and direction over time. The coil has an outer diameter and a total length which is approximately the same as the outer diameter. | 07-23-2009 |
20090243738 | MULTIPLE STATUS E-FUSE BASED NON-VOLATILE VOLTAGE CONTROL OSCILLATOR CONFIGURED FOR PROCESS VARIATION COMPENSATION, AN ASSOCIATED METHOD AND AN ASSOCIATED DESIGN STRUCTURE - Disclosed are embodiments of a voltage controlled oscillator (VCO) capable of non-volatile self-correction to compensate for process variations and to ensure that the center frequency of the oscillator is maintained within a predetermined frequency range. This VCO incorporates a pair of varactors connected in parallel to an inductor-capacitor (LC) tank circuit for outputting a periodic signal having a frequency that is proportional to an input voltage. A control loop uses a programmable variable resistance e-fuse to set a compensation voltage to be applied to the pair of varactors. By adjusting the compensation voltage, the capacitance of the pair of varactors can be adjusted in order to selectively increase or decrease the frequency of the periodic signal in response to a set input voltage and, thereby to bring the frequency of that periodic signal into the predetermined frequency range. Also disclosed are embodiments of an associated design structure for such a VCO and an associated method for operating such a VCO. | 10-01-2009 |
20090243739 | MULTIPLE STATUS E-FUSE BASED NON-VOLATILE VOLTAGE CONTROL OSCILLATOR CONFIGURED FOR PROCESS VARIATION COMPENSATION, AN ASSOCIATED METHOD AND AN ASSOCIATED DESIGN STRUCTURE - Disclosed are embodiments of a voltage controlled oscillator (VCO) capable of non-volatile self-correction to compensate for process variations and to ensure that the center frequency of the oscillator is maintained within a predetermined frequency range. This VCO incorporates a pair of varactors connected in parallel to an inductor-capacitor (LC) tank circuit for outputting a periodic signal having a frequency that is proportional to an input voltage. A control loop uses a programmable variable resistance e-fuse to set a compensation voltage to be applied to the pair of varactors. By adjusting the compensation voltage, the capacitance of the pair of varactors can be adjusted in order to selectively increase or decrease the frequency of the periodic signal in response to a set input voltage and, thereby to bring the frequency of that periodic signal into the predetermined frequency range. Also disclosed are embodiments of an associated design structure for such a VCO and an associated method for operating such a VCO. | 10-01-2009 |
20090261916 | Programmable Filter for LC Tank Voltage Controlled Oscillator (VCO), Design Structure and Method Thereof - A programmable filter for LC tank voltage controlled oscillator (VCO) and a design structure for a programmable filter for LC tank VCO. The programmable filter includes a proportional control comprising a plurality of capacitance biased by different input voltages and an integral control comprising a filter element with a capacitance C1 and a set of capacitance biased by a voltage output of the filter element. | 10-22-2009 |
20100045394 | Method, System and Apparatus for Accurate and Stable LC-Based Reference Oscillators - A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The temperature null phase is a phase of the LC tank at which variations in frequency of an output oscillation of the LC-based oscillator with temperature changes are minimized. The LC-based oscillator further includes frequency stabilizer circuitry coupled to the LC tank to cause the LC tank to oscillate at the phase substantially equal to the temperature null phase. | 02-25-2010 |
20100156549 | VOLTAGE CONTROLLED OSCILLATOR - A voltage controlled oscillator includes a loop-shaped transmission line, an active circuit connected to a signal line, and a variable capacitor block connected to the signal line and having a plurality of variable capacitor units. Each variable capacitor unit includes a variable capacitor element, a control terminal for applying a control voltage to the variable capacitor element, and a reference voltage terminal for applying a reference voltage to the variable capacitor element. At least two variable capacitor units receive different reference voltages. | 06-24-2010 |
20100214035 | Reference Frequency Control Circuit - A reference frequency control circuit comprising: a frequency voltage converting circuit configured to receive an oscillation signal from an oscillator circuit, and output an output voltage corresponding to a frequency of the oscillation signal, the oscillator circuit being a circuit configured to oscillate at a frequency corresponding to a level of an input signal; and a control circuit configured to control a level of the input signal so that the output voltage is at a predetermined level. | 08-26-2010 |
20100308932 | CAPACITOR SWITCHING CIRCUIT - A capacitance switching element includes first and second capacitors connected in series by transistors. The gates of the transistors are biased by a first signal through one set of resistors, and the sources and drains are biased by a second signal through a second set of resistors. The signals are level-shifted and may be complimentary. To turn the element ON, the first signal may be set to V | 12-09-2010 |
20110128084 | METHODS AND APPARATUS FOR INDUCTORS WITH INTEGRATED PASSIVE AND ACTIVE ELEMENTS - An integrated circuit is described. The integrated circuit includes an inductor that has a large empty area in the center of the inductor. The integrated circuit also includes additional circuitry. The additional circuitry is located within the large empty area in the center of the inductor. The additional circuitry may include a capacitor bank, transistors, electrostatic discharge (ESD) protection circuitry and other miscellaneous passive or active circuits. | 06-02-2011 |
20110140797 | SIGNAL GENERATOR - Provided is a signal generator. The signal generator includes an insulating substrate, a chip disposed on the insulating substrate and including an oscillator including a capacitance element determining a resonant frequency signal, and a plurality of conductive lines disposed on the same surface of the insulating substrate to be spaced apart from each other. At least one of the plurality of conductive lines is electrically connected with the oscillator and provides an inductance element determining the resonant frequency signal to the oscillator. | 06-16-2011 |
20120146739 | DEVICE HAVING INDUCTOR AND MEMCAPACITOR - Methods and means related to an electronic circuit having an inductor and a memcapacitor are provided. Circuitry is formed upon a substrate such that an inductor and non-volatile memory capacitor are formed. Additional circuitry can be optionally formed on the substrate as well. The capacitive value of the memcapacitor is adjustable within a range by way of an applied programming voltage. The capacitive value of the memcapacitor is maintained until reprogrammed at some later time. Oscillators, phase-locked loops and other circuits can be configured using embodiments of the present teachings. | 06-14-2012 |
20120161891 | OTA-BASED CURRENT-MODE FILTER AND OSCILLATOR - Techniques are generally described herein related to filters including first operational transconductance amplifier (first OTA) and a second operational transconductance amplifier (second OTA). In some examples described herein, the first OTA and second OTA have substantially the same transconductance. The first and second OTAs can be configured to realize filters such as first-order all-pass filters, second-order all-pass filters, higher-order all-pass filters, and quadrature oscillators. | 06-28-2012 |
20120262244 | TEMPERATURE-COMPENSATED OSCILLATOR AND ELECTRONIC DEVICE - A temperature-compensated oscillator includes a temperature compensation circuit adapted to output a temperature compensation voltage, a voltage-controlled oscillation circuit on which temperature compensation is performed based on the temperature compensation voltage, a switch circuit adapted to perform ON/OFF control on power supply to the temperature compensation circuit, and a sample-and-hold circuit adapted to perform switching control between an ON state of outputting the temperature compensation voltage to the voltage-controlled oscillation circuit while being connected to the temperature compensation circuit and holding the temperature compensation voltage output from the temperature compensation circuit when the power is supplied to the temperature compensation circuit, and an OFF state of outputting the temperature compensation voltage held to the voltage-controlled oscillation circuit while cutting connection to the temperature compensation circuit when the power supply to the temperature compensation circuit is cut. | 10-18-2012 |
20130082793 | Mutual Inductance Circuits - An apparatus includes a first conductive loop coupled to conduct a first current and a second conductive loop coupled in parallel with the first conductive loop and further coupled to conduct a second current. A first conductive portion forms a part of the first conductive loop and the second conductive loop. The first conductive portion is coupled to conduct the first current and the second current. In at least one embodiment of the apparatus, the first conductive loop and the second conductive loop are planar inductors formed in a conductive layer on a substrate of an integrated circuit. | 04-04-2013 |
20130088302 | VOLTAGE-CONTROLLED OSCILLATOR DEVICE AND METHOD OF CORRECTING VOLTAGE-CONTROLLED OSCILLATOR - The present application discloses a voltage-controlled oscillator device and a method of correcting the voltage-controlled oscillator. The voltage-controlled oscillator device comprises predistortion module, configured to predistort an input voltage to obtain a predistorted voltage; and a voltage-controlled oscillator, configured to generate an output signal with a corresponding oscillation frequency according to the predistorted voltage, wherein the predistortion module corrects a non-linear characteristic of the voltage-controlled oscillator, so that there is a linear relationship between the input voltage and the oscillation frequency of the output signal. The voltage-controlled oscillator device may be applied to a phase-locked circuit in a communication system. | 04-11-2013 |
20130314167 | METHOD AND APPARATUS TO CONTROL THE LC TANK TEMPERATURE NULL CHARACTERISTIC IN A HIGHLY STABLE LC OSCILLATOR - A substantially temperature-independent LC-based oscillator uses bias control techniques. Temperature independence may be achieved by controlling the harmonic frequency content of the output of the oscillator by controlling the amplitude. Amplitude control may be achieved by inserting a control mechanism in the feedback loop of the oscillator. | 11-28-2013 |
20130314168 | TEMPERATURE-STABLE LC OSCILLATORS AND METHODS OF OSCILLATION AT TEMPERATURE NULL PHASE - An LC oscillator tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The oscillator further includes frequency stabilizer circuitry coupled to the LC oscillator tank to cause the LC oscillator tank to operate at the temperature null phase. In one aspect of the disclosure, a feedback loop may split the output voltage of the LC tank into two voltages having different phases, where each voltage is independently transformed into a current through programmable transconductors, The two currents may be combined to form a resultant current which is then applied to the LC tank. The phase of the resultant current is such that the LC tank operates at an impedance condition that achieves frequency stability across temperature. | 11-28-2013 |
20140002204 | DIGITALLY CONTROLLED OSCILLATOR HAVING IMPROVED LINEARITY | 01-02-2014 |