| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 11/25/2009 | EP2124330A1 Gain temperature compensation circuit |
| 11/25/2009 | EP2124329A1 High frequency amplifier |
| 11/25/2009 | EP2122827A1 Flexible dynamic range amplifier |
| 11/25/2009 | EP2122826A1 Amplifier with integrated filter |
| 11/25/2009 | EP2122825A1 Uwb amplifier |
| 11/25/2009 | CN101589548A Chopper-stabilized instrumentation amplifier for impedance measurement |
| 11/25/2009 | CN101588159A Radio frequency (RF) power amplifier and RF power amplifier apparatus |
| 11/25/2009 | CN101588158A Pulse width modulation amplifier |
| 11/25/2009 | CN101588157A Audio amplifier |
| 11/25/2009 | CN101588156A Audio amplifier |
| 11/25/2009 | CN101588125A Power-supply apparatus and control method, power amplifying device |
| 11/25/2009 | CN100563096C Linear biasing circuit with adaptability |
| 11/24/2009 | US7623990 System for reducing signal interference in modulated signal communication |
| 11/24/2009 | US7622995 Negative-feedback type ultra-wideband signal amplification circuit |
| 11/24/2009 | US7622994 Bias circuit with increased power supply rejection |
| 11/24/2009 | US7622988 Chopper-stabilized instrumentation amplifier for impedance measurement |
| 11/24/2009 | US7622987 Pattern-based DC offset correction |
| 11/19/2009 | WO2009139680A1 Baseband decoupling of radio frequency power transistors |
| 11/19/2009 | WO2009138635A1 Integrated circuitand corresponding method of processing a multitype radio frequency digital signal |
| 11/19/2009 | US20090285579 Linearized trans-impedance amplifiers |
| 11/19/2009 | US20090284315 Operational amplifier |
| 11/19/2009 | US20090284242 System and Method for Generating a Reference Voltage |
| 11/19/2009 | DE102007052440B4 Verfahren und Anordnung eines Messverstärkers zur Korrektur von Eingangssignalen Method and arrangement of a measuring amplifier for correction of input signals |
| 11/18/2009 | EP2120335A1 Power voltage forming device and polar modulation transmission device |
| 11/18/2009 | EP2119000A1 Chopper-stabilized instrumentation amplifier for impedance measurement |
| 11/18/2009 | EP2118999A2 Power amplifier time-delay invariant predistortion methods and apparatus |
| 11/18/2009 | EP2118998A2 Predistortion of pulse modulator for correction of slewing distortion |
| 11/18/2009 | EP2118672A2 Sps receiver with adjustable linearity |
| 11/18/2009 | CN201349272Y CRT television mute control circuit |
| 11/18/2009 | CN201349201Y Temperature gain control circuit applied to audio-frequency amplifier |
| 11/18/2009 | CN101584112A Multi-stage amplifier with multiple sets of fixed and variable voltage rails |
| 11/18/2009 | CN101583311A A device and method for detecting an epileptic event |
| 11/18/2009 | CN101583063A Audio processing method and system |
| 11/18/2009 | CN101582682A Power amplifier and transmitter |
| 11/18/2009 | CN100561859C New type digital audio power amplifier |
| 11/17/2009 | US7619481 Circuit for inhibiting over-current in power amplifier |
| 11/17/2009 | US7619478 Operational amplifier having its compensator capacitance temporarily disabled |
| 11/12/2009 | WO2009137160A2 Controlling power with an output network |
| 11/12/2009 | WO2009136326A1 Efficient linear linc power amplifier |
| 11/12/2009 | WO2009136202A1 Amplifier circuit |
| 11/12/2009 | WO2009135941A1 Modulated supply stage with feedback to switched supply |
| 11/12/2009 | US20090278610 Power amplifier output voltage reduction method |
| 11/12/2009 | US20090278598 Method and apparatus for modifying interactions between an electrical generator and a nonlinear load |
| 11/12/2009 | US20090278597 Slew rate and settling time improvement circuitry and method for 3-stage amplifier |
| 11/11/2009 | EP2117117A1 Modulation digital-analog converter, digital signal processing method, and av device |
| 11/11/2009 | EP2117116A2 Delay detection circuit, distortion compensation circuit, and communication apparatus |
| 11/11/2009 | EP2117115A1 Improvement to remote control methods of transmission signals adaptive predistortion |
| 11/11/2009 | EP2115869A1 Multimode amplifier for operation in linear and saturated modes |
| 11/11/2009 | CN201345639Y Intelligent device for temperature compensation of power amplifier tube |
| 11/11/2009 | CN101577528A Progressive power generating amplifiers |
| 11/11/2009 | CN101577527A Audio amplifier |
| 11/11/2009 | CN101577525A Device and method for estimating model of amplifier |
| 11/11/2009 | CN100559720C Digital predistortion system and method for linearizing an RF power amplifier with nonlinear gain characteristics and memory effects |
| 11/11/2009 | CN100559719C Power amplification apparatus of portable terminal |
| 11/11/2009 | CN100559706C Radio-frequency differential-to-single-ended converter |
| 11/11/2009 | CN100559704C Photo-receiving pre-amplifier |
| 11/11/2009 | CN100559703C Timing controller and timing control method |
| 11/11/2009 | CN100559702C Amplifier device |
| 11/11/2009 | CN100559701C Driving circuit of power amplifier |
| 11/10/2009 | US7616792 Scale selection for anisotropic scale-space: application to volumetric tumor characterization |
| 11/10/2009 | US7616151 Reducing scattering center data using magnitude-based reduction |
| 11/10/2009 | US7616057 Nested transimpedance amplifier |
| 11/10/2009 | US7616055 Transmitter apparatus with extended gain control |
| 11/10/2009 | US7616054 Multiple output power mode amplifier |
| 11/05/2009 | WO2009134735A1 Chopper-stabilized amplifier and magnetic field sensor |
| 11/05/2009 | WO2009134590A1 Combined feedback and feed-forward linearisation of rf power amplifiers |
| 11/05/2009 | WO2009100096A3 Multi-mode high efficiency linear power amplifier |
| 11/05/2009 | US20090275322 Prevention of audio pop in a digital audio device |
| 11/05/2009 | US20090275295 Method and system for flip-chip rf front end with a switchable power amplifier |
| 11/05/2009 | US20090273398 Doherty power amplifier |
| 11/05/2009 | US20090273397 Controlling power with an output network |
| 11/04/2009 | EP2114008A1 A method for controlling an amplifier and an amplifier |
| 11/04/2009 | EP2113141A1 An amplification apparatus |
| 11/04/2009 | EP1364456B1 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control |
| 11/04/2009 | CN201341115Y Isolation amplification circuit of alternating-current analog electrical signal based on linear optical coupler |
| 11/03/2009 | US7613759 Low-complexity nonlinear filters |
| 11/03/2009 | US7611464 Method for processing Doppler signal gaps |
| 10/29/2009 | WO2009131440A1 Method and control circuit for controlling pulse width modulation |
| 10/29/2009 | WO2009131138A1 Amplifier |
| 10/29/2009 | WO2009130544A1 Wireless communication unit and semiconductor device having a power amplifier therefor |
| 10/29/2009 | WO2009088278A3 Temperature compensation method for ion sensor using vt extractor circuit |
| 10/29/2009 | US20090267688 Combined feedback and feed-forward linearization of rf power amplifiers |
| 10/29/2009 | US20090267687 Chopper-stabilized amplifier and magnetic field sensor |
| 10/28/2009 | EP1719244B1 Dynamically biased amplifier |
| 10/28/2009 | CN101569090A An amplification apparatus |
| 10/28/2009 | CN101567670A Method for realizing broadband multi-target low-noise amplifier |
| 10/28/2009 | CN101567669A Variable gain amplifier |
| 10/28/2009 | CN101567668A Voltage detection type overcurrent protection device applied to D-class amplifier |
| 10/28/2009 | CN101567667A Enhancement type analog predistortion linear power amplifier |
| 10/28/2009 | CN101567666A Time amplifier for amplifying time difference and method therefor |
| 10/28/2009 | CN101567665A Digital Doherty power amplifier |
| 10/28/2009 | CN101567664A Method for improving efficiency of power amplifier by self-adaptively adjusting grid-voltage value |
| 10/28/2009 | CN101567519A Large-current pulse LD laser driving power supply |
| 10/28/2009 | CN100555845C Method and device for correcting signal distortions in an amplifier device |
| 10/28/2009 | CN100555843C Analog predistortion based linear power amplification circuit and method |
| 10/28/2009 | CN100555842C Predistorter |
| 10/28/2009 | CN100555128C Electronic apparatus and method for implementing intelligent awakening mode function |
| 10/27/2009 | US7609111 Negative capacitance synthesis |
| 10/27/2009 | US7608810 Semiconductor device, module, and electronic device including a conversion circuit having a second switch rendered conductive together with a first switch |
| 10/22/2009 | WO2009128191A1 Amplitude control circuit, polar modulating transmission circuit and polar modulating method |