| 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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| 08/04/2011 | US20110187458 Power amplifier |
| 08/04/2011 | US20110187457 Output Buffer Circuit Capable of Enhancing Stability |
| 08/04/2011 | US20110187455 Adaptive Digital Predistortion Device and Method |
| 08/04/2011 | US20110187454 Distortion compensating apparatus, transmitting apparatus, and distortion compensating method |
| 08/04/2011 | US20110187453 Linearizer incorporating a phase shifter |
| 08/04/2011 | DE102011000414A1 Leistungsverstärker-Linearisierungs-Rückkopplungsverfahren und -systeme Power amplifier linearization feedback methods and systems |
| 08/03/2011 | EP2351210A1 Voltage clamp |
| 08/03/2011 | EP2351209A1 Amplifier with improved esd protection circuitry |
| 08/03/2011 | EP2011232B1 Adaptive pre-distortion |
| 08/03/2011 | EP1865597B1 Amplifier apparatus |
| 08/03/2011 | EP1611676B1 Power amplifier pre-distortion |
| 08/03/2011 | EP1518321B1 Improved power amplifier configuration |
| 08/03/2011 | CN201918964U 一种增益可调低噪声放大器 One kind of noise amplifier gain can be lowered |
| 08/03/2011 | CN201918638U 单通道激光器调谐电路 Single-channel laser tuning circuit |
| 08/03/2011 | CN201918637U 一种单通道激光器调谐电路 One-channel laser tuned circuit |
| 08/03/2011 | CN201918636U 一种单通道激光器调谐控制电路 One-channel laser tuning control circuit |
| 08/03/2011 | CN102142851A Distortion compensating apparatus, transmitting apparatus, and distortion compensating method |
| 08/03/2011 | CN102142818A Class-AB amplifier and over-temperature protection circuit thereof |
| 08/03/2011 | CN102142817A input-power overload-protection circuit |
| 08/03/2011 | CN102142816A Wideband current-recovery chopped-wave stabilized amplifier with low energy consumption on the basis of metal oxide semiconductor (MOS) device |
| 08/03/2011 | CN102142815A Class-D-based multi-power supply switching modulation method and circuit |
| 08/03/2011 | CN102142814A Power amplifier related device, power amplifier predistortion system and modeling method |
| 08/03/2011 | CN102142813A Low-noise high-voltage amplifier |
| 08/03/2011 | CN102142812A Doherty power amplifier |
| 08/03/2011 | CN101552598B Grid driving circuit for switching power transistor |
| 08/03/2011 | CN101461132B High efficiency linear power amplifiers with load compensation |
| 08/03/2011 | CN101427460B Output networks in combination with LINC technique |
| 08/03/2011 | CN101379696B Power amplifier |
| 08/02/2011 | US7990217 Input system for a variable gain amplifier having class-AB transconductance stages |
| 08/02/2011 | US7990212 Modulated audio amplifier output enable control |
| 08/02/2011 | CA2376767C Transistor amplifier having reduced parasitic oscillations |
| 07/28/2011 | WO2011091064A1 HIGH VOLTAGE, HIGH FREQUENCY ESD PROTECTION CIRCUIT FOR RF ICs |
| 07/28/2011 | US20110181355 Signal-compensation device and communication apparatus |
| 07/28/2011 | US20110181271 Peaking circuit, peaking circuit control method, waveform measurement apparatus, and information processing apparatus |
| 07/28/2011 | DE102008034456B4 Gleichstromgekoppelter kaskadierter Transistorverstärker für hohe Ausgangsspannungen DC-coupled cascaded transistor amplifier for high output voltages |
| 07/27/2011 | EP2141798B1 Amplifier apparatus |
| 07/27/2011 | CN201910769U Temperature compensation device |
| 07/27/2011 | CN201910575U Dual-channel laser turned circuit |
| 07/27/2011 | CN201910574U Double-channel laser tuning circuit |
| 07/27/2011 | CN201910573U Single-channel laser tuning control circuit |
| 07/27/2011 | CN102138281A Hybrid class amplifier |
| 07/27/2011 | CN102138280A Method of and circuit for reducing distortion in a power amplifier |
| 07/27/2011 | CN102136827A Differential amplifier capable of compensating input offset voltage and compensating method |
| 07/27/2011 | CN102136826A ACL control and temperature compensation method and device |
| 07/27/2011 | CN101615890B Method and device for processing digital pre-distortion |
| 07/27/2011 | CN101471625B Amplifier and the method thereof |
| 07/27/2011 | CN101425782B Predistorter |
| 07/27/2011 | CN101425781B Audio power amplifying apparatus |
| 07/27/2011 | CN101273526B Electronic device with an amplifier output stage and an over-current detection means |
| 07/27/2011 | CN101194431B By-pass arrangement of a low noise amplifier |
| 07/26/2011 | US7986188 Non-inverting amplifier circuit, semiconductor integrated circuit, and phase compensation method of non-inverting amplifier circuit |
| 07/26/2011 | US7986185 Rail-to-rail Miller compensation method without feed forward path |
| 07/26/2011 | US7986184 Radio frequency amplifier with effective decoupling |
| 07/21/2011 | WO2011087762A1 Efficient active source impedance modification of a power amplifier |
| 07/21/2011 | WO2011086752A1 Amplifying device and signal processing device |
| 07/21/2011 | WO2011086640A1 Transmitter apparatus, wireless communication apparatus and transmission method |
| 07/21/2011 | WO2011086617A1 Amplifier with high-frequency noise removal function, microphone module and sensor module |
| 07/21/2011 | US20110176251 Amplification Relay Device Of Electromagnetic Wave And A Radio Electric Power Conversion Apparatus Using The Device |
| 07/21/2011 | US20110175685 Multi-primary distributed active transformer amplifier power supply and control |
| 07/21/2011 | US20110175678 Amplifier Linearizer |
| 07/21/2011 | US20110175677 Distributed doherty power amplifier |
| 07/21/2011 | DE10345691B4 Integrierte Schaltung und Verfahren zum Konstanthalten der Transkonduktanz Integrated circuit and method for keeping constant the transconductance |
| 07/20/2011 | EP2346164A2 Amplification apparatus |
| 07/20/2011 | EP2346163A1 Semiconductor integrated circuit and video signal output circuit |
| 07/20/2011 | EP2346162A1 Method and device for compensating amplification variations in an amplifier circuit |
| 07/20/2011 | EP2346161A1 Receiving circuit |
| 07/20/2011 | EP2345155A1 Variable duty cycle generation for out-phasing and pwm power amplifiers |
| 07/20/2011 | CN201904761U Low-noise amplifier circuit with high linearity |
| 07/20/2011 | CN201904760U Temperature regulation circuit in microwave band amplification link |
| 07/20/2011 | CN1875594B Dual mode multi-slot EGPRS transmitter |
| 07/20/2011 | CN1747367B Received signal strength measurement circuit, received signal strength detection circuit and wireless receiver |
| 07/20/2011 | CN1658497B Method and apparatus for improving power amplifier efficiency in wireless communication systems |
| 07/20/2011 | CN102130658A Feedback biasing for cascode amplifiers |
| 07/20/2011 | CN102130656A Novel integrated circuit structure of full-integrated dual frequency band low-noise amplifier |
| 07/20/2011 | CN102130655A Intersection moving-down circuit |
| 07/20/2011 | CN101350594B Method, circuit and electronic device for eliminating start-up sound-breaking of audio circuit |
| 07/20/2011 | CN101345513B Switching audio power amplifier with de-noise function |
| 07/19/2011 | US7983636 Amplifier control device |
| 07/19/2011 | US7983365 Automatically setting an operative state of a wideband amplifier |
| 07/19/2011 | US7982542 Power transistor feedback circuit with noise and offset compensation |
| 07/19/2011 | US7982535 AMP output protective circuit for LCD panel source driver |
| 07/19/2011 | CA2690442A1 Distortion cancellation method and circuit |
| 07/14/2011 | WO2011084592A2 Amplifier circuit |
| 07/14/2011 | WO2011084384A2 Amplifier with improved input resistance and controlled common mode |
| 07/14/2011 | WO2011083758A1 Amplifying device |
| 07/14/2011 | WO2011028077A3 Apparatus and method for envelope tracking power amplifier in wireless communication system |
| 07/14/2011 | US20110169677 Resonator and oversampling a/d converter |
| 07/14/2011 | US20110169573 Amplifier circuit with step gain |
| 07/14/2011 | US20110169568 Operational amplifier |
| 07/14/2011 | US20110169566 Predistorition linearizer with bridge topology having an equalizer stage for each bridge arm |
| 07/14/2011 | DE102005037013B4 Detektion von Zuständen eines Verstärkers außerhalb des Betriebsbereichs Detection of states of an amplifier outside the operating range |
| 07/13/2011 | EP2343801A2 Audio apparatus |
| 07/13/2011 | EP2342817A1 Enhanced doherty amplifier with bias supply modulation |
| 07/13/2011 | EP2342779A1 Rf power amplifier system with impedance modulation |
| 07/13/2011 | EP1791310B1 Distortion compensating apparatus |
| 07/13/2011 | EP1511182B1 Table reference predistortor |
| 07/13/2011 | EP1505723B1 Hybrid distortion compensation method and hybrid distortion compensation apparatus |
| 07/13/2011 | CN201898480U Nonlinearity compensated amplifier used for magnetic particle brake clutch |
| 07/13/2011 | CN102124646A High-linearity low-noise receiver with load switching |
| 07/13/2011 | CN102124645A Controlling power with an output network |