| 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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| 05/05/2011 | WO2011053855A1 Adaptive digital post distortion reduction |
| 05/05/2011 | WO2011052855A1 Low-noise amplifier and a low-noise-amplifier integrated-circuit device |
| 05/05/2011 | WO2011051146A1 Multi-port amplification device that self-compensates in the presence of traffic |
| 05/05/2011 | WO2011050974A1 Amplifier activation |
| 05/05/2011 | WO2011050973A1 Calibration of signal processing apparatus |
| 05/05/2011 | US20110102391 Illumination sensing device having a reference voltage setting apparatus and a display device including the illumination sensing device |
| 05/05/2011 | US20110102088 Low noise amplifier circuit |
| 05/05/2011 | US20110102080 Systems and methods for distortion measurement using distortion-to-amplitude transformations |
| 05/05/2011 | US20110102077 Semiconductor device with feedback control |
| 05/05/2011 | CA2778855A1 Multi-port amplification device that self-compensates in the presence of traffic |
| 05/04/2011 | EP2317645A1 Capacitive sensor |
| 05/04/2011 | EP2317644A1 Amplifier activation |
| 05/04/2011 | EP2316164A1 Driver amplifier having a programmable output impedance adjustment circuit |
| 05/04/2011 | EP2316163A1 Integrated circuit with parallel sets of transistor amplifiers having different turn on power levels |
| 05/04/2011 | CN201821322U Amplifier with higher power and adopting backspacing feedforward method |
| 05/04/2011 | CN201821321U Amplifier hardware temperature compensation circuit used in base station |
| 05/04/2011 | CN1968009B System for dynamic time offsetting in interleaved power amplifiers |
| 05/04/2011 | CN102047567A Reduced power-consumption transmitters |
| 05/04/2011 | CN102047554A RF power amplifiers with linearization |
| 05/04/2011 | CN102045281A Signal modulation method |
| 05/04/2011 | CN102045077A Integrally packaged intermediate frequency receiver assembly |
| 05/04/2011 | CN102045033A Amplifier with single-ended input and differential output |
| 05/04/2011 | CN102045032A Power amplifier |
| 05/04/2011 | CN102045031A Circuit and method for radio frequency amplifier |
| 05/04/2011 | CN102045030A Amplifier control method, amplifier control system and amplifier circuit |
| 05/04/2011 | CN102045029A Operation amplifying circuit |
| 05/04/2011 | CN102045028A Low noise amplifier with adjustable gain |
| 05/04/2011 | CN102045027A Modularized circuit for compensated neutron pre-stage amplifying circuit |
| 05/04/2011 | CN101521487B Pre-posing circuit in audio power amplifier |
| 05/04/2011 | CN101453194B Non-filter circuit construction for D type power amplifier and processing method thereof |
| 05/04/2011 | CN101404478B Method and apparatus for improving efficiency of class E power amplifier |
| 05/03/2011 | US7937245 Rendering of subsurface scattering effects in translucent objects |
| 05/03/2011 | US7936215 Multi-segment primary and multi-turn secondary transformer for power amplifier systems |
| 05/03/2011 | US7936214 Third order derivative distortion cancellation for ultra low power applications |
| 04/28/2011 | WO2011050087A1 Digitally controlled ac protection and attenuation circuit |
| 04/28/2011 | WO2011049695A1 Multimode power amplifier with predistortion |
| 04/28/2011 | WO2011048893A1 Combiner for doherty amplifier |
| 04/28/2011 | WO2011004356A3 A system and a method for signal processing |
| 04/28/2011 | WO2009109808A3 Baseband-derived rf digital predistortion |
| 04/28/2011 | WO2009031042A3 N-way doherty distributed power amplifier |
| 04/28/2011 | US20110098011 Multimode power amplifier with predistortion |
| 04/28/2011 | US20110096944 High perceived audio quality class d amplifier |
| 04/28/2011 | US20110095822 Variable-gain low noise amplifier |
| 04/28/2011 | US20110095821 Pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 04/28/2011 | US20110095820 Method for pre-distorting a power amplifier and the circuit thereof |
| 04/28/2011 | US20110095819 Amplifier linearizer |
| 04/28/2011 | US20110095817 Overcurrent detection circuit and signal amplifying device |
| 04/27/2011 | EP2315351A1 Doherty power amplifiers |
| 04/27/2011 | EP2313970A1 Dual-loop feedback amplifying circuit |
| 04/27/2011 | EP1794879B1 Tunable predistorter |
| 04/27/2011 | CN201813348U Amplitude balancing circuit |
| 04/27/2011 | CN1665142B 模数转换器 ADC |
| 04/27/2011 | CN102037699A Distortion compensation circuit and distortion compensation method |
| 04/27/2011 | CN102037641A Amplifier with improved linearization |
| 04/27/2011 | CN102035500A High anti-interference high-pass amplifier |
| 04/27/2011 | CN102035483A Operational amplifier |
| 04/27/2011 | CN102035481A Bias circuit |
| 04/27/2011 | CN102035479A Low noise amplifier circuit with high linearity |
| 04/27/2011 | CN102035478A Frequency compensation circuit applicable to high speed integrated amplifier |
| 04/27/2011 | CN102035477A 音频放大器 Audio Amplifiers |
| 04/27/2011 | CN101114810B Amplifier stage, operational amplifier and method for amplifying a signal |
| 04/26/2011 | CA2555988C Digital predistortion system and method for linearizing an rf power amplifier with nonlinear gain characteristics and memory effects |
| 04/21/2011 | WO2011047352A2 Amplifier bias techniques |
| 04/21/2011 | WO2011046031A1 Power amplifier and method for operating same |
| 04/21/2011 | WO2011022549A3 Digital tunable inter-stage matching circuit |
| 04/21/2011 | US20110090009 Capacitive sensor |
| 04/20/2011 | EP2312747A2 Distortion compensation |
| 04/20/2011 | EP2312746A1 Final three-way power synthesizing amplifier circuit for mobile communication base station system power amplifier |
| 04/20/2011 | EP2311185A1 A pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 04/20/2011 | EP2044687B1 A method for controlling a linear amplifier and power amplifier arrangement |
| 04/20/2011 | EP1946440B1 A transconductance stage arrangement |
| 04/20/2011 | EP1366562B1 Amplitude and phase modulator |
| 04/20/2011 | EP1339248B1 Method and device of gain equalization based on wideband multi-carrier base-station |
| 04/20/2011 | EP1204216B1 Method and apparatus for distortion compensation of radio device |
| 04/20/2011 | EP1020025B1 Method and apparatus for reducing power dissipation in multi-carrier amplifiers |
| 04/20/2011 | CN102026062A Integrated circuit, method and chip for microphone signal preamplification as well as electronic equipment |
| 04/20/2011 | CN102025333A Level adjusting circuit and audio system using the same |
| 04/20/2011 | CN102025332A Gain control circuit and method |
| 04/20/2011 | CN102025330A Class-d amplifier |
| 04/20/2011 | CN102025329A Arrangement and combination type multi-line power amplification system |
| 04/20/2011 | CN102025328A Radio frequency power signal sampling and amplifying circuit |
| 04/20/2011 | CN102025327A Amplifier apparatus and predistortion control method |
| 04/20/2011 | CN102025326A Digital self-zero calibration circuit applied for operational amplifier |
| 04/20/2011 | CN102025325A Audio-frequency amplifier and electronic equipment using the same |
| 04/20/2011 | CN102025324A System and method for improving switching time precision of time division duplex terminal power amplifier |
| 04/20/2011 | CN101567664B Method for improving efficiency of power amplifier by self-adaptively adjusting grid-voltage value |
| 04/20/2011 | CN101162913B Predistortion device and method |
| 04/19/2011 | US7930147 Sensor response time accelerator |
| 04/19/2011 | US7929637 Method and apparatus for digital amplitude and phase modulation |
| 04/19/2011 | US7928800 Programmable compensation network for operational amplifiers |
| 04/19/2011 | US7928799 Power amplifying apparatus and mobile communication terminal |
| 04/14/2011 | WO2011042952A1 Papr (peak-to-average power ratio) determining apparatus and communication apparatus |
| 04/14/2011 | WO2011042919A1 Pulse width modulation for a switching amplifier |
| 04/14/2011 | US20110084766 Wideband active circuit with feedback structure |
| 04/14/2011 | US20110084764 Amplifier and signal filter |
| 04/13/2011 | EP2309642A2 Bias circuit |
| 04/13/2011 | EP2308170A1 Vswr compensation circuits for rf transmit chain |
| 04/13/2011 | EP1307971B1 Control of receiver immunity to interference by controlling linearity |
| 04/13/2011 | CN201797488U Novel digital input power amplifier |
| 04/13/2011 | CN201797487U Power amplifier based on analog predistortion technology and Doherty technology |