| 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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| 03/20/2013 | EP2571161A1 Amplifier |
| 03/20/2013 | EP2569860A1 Area efficient concurrent matching transceiver |
| 03/20/2013 | CN202818464U Intelligent rapid protection system of digital television repeater |
| 03/20/2013 | CN202818239U Noise suppression circuit and audio frequency amplifier with noise suppression function |
| 03/20/2013 | CN202818238U High fidelity last-stage power amplifying circuit and transistor high fidelity audio amplifier |
| 03/20/2013 | CN202818235U Interference-suppressing radio frequency transmission circuit |
| 03/20/2013 | CN202818234U Coriolis force mass flowmeter driving amplifier |
| 03/20/2013 | CN202818233U Data amplification circuit for precision instrument |
| 03/20/2013 | CN202818232U Doherty power amplifying circuit |
| 03/20/2013 | CN202818231U Symmetrical double-conversion type radio frequency power amplifier |
| 03/20/2013 | CN102983824A Self-adaptive predistortion power amplifier |
| 03/20/2013 | CN102983820A Nonlinear injection type linearization system and digital predistortion method |
| 03/20/2013 | CN102983819A Imitating method of power amplifier and imitating device of power amplifier |
| 03/20/2013 | CN102983818A Low-noise amplifier |
| 03/20/2013 | CN102983817A High-gain wideband low-noise amplifier |
| 03/20/2013 | CN102983816A System and method of reducing power consumption for audio playback |
| 03/20/2013 | CN102983815A Self-adaptive interference signal expansion device |
| 03/20/2013 | CN102983814A Power amplifier linearity dynamic check method |
| 03/20/2013 | CN102975930A Automatic control lifting packing container with amplification circuit |
| 03/20/2013 | CN102111114B Design method for reverse class-F power amplifier based on 3/4 spiral virtual ground structure |
| 03/20/2013 | CN101710824B Class D amplifier |
| 03/20/2013 | CN101647195B Distortion compensation controller and distortion compensation control method |
| 03/20/2013 | CN101594324B Method for generating pre-distorted signals |
| 03/20/2013 | CN101257329B Controlling method and system in emitter |
| 03/19/2013 | US8401207 Motional feedback system |
| 03/19/2013 | US8400224 Programmable low noise amplifier and methods for use therewith |
| 03/19/2013 | US8400223 Amplifier arrangement |
| 03/19/2013 | US8397571 Sensor output circuit |
| 03/14/2013 | WO2013035523A1 Rf signal generating circuit, and transmitter |
| 03/14/2013 | WO2013034993A1 Linearization for a single power amplifier in a multi-band transmitter |
| 03/14/2013 | WO2013034595A1 Electronic device with body-biasing circuit for portable equipment with usb connector for headset |
| 03/14/2013 | WO2013033837A1 Radio-frequency circuit having a transcoupling element |
| 03/14/2013 | WO2013033836A1 Radio-frequency transmitter, such as for broadcasting and cellular base stations |
| 03/14/2013 | WO2013012787A3 Modified switching ripple for envelope tracking system |
| 03/14/2013 | WO2013001059A3 Doherty amplifier with optimised efficiency |
| 03/14/2013 | WO2012148918A3 Apparatus and methods for envelope tracking |
| 03/14/2013 | US20130064398 Class-AB/B amplifier with quiescent control circuit |
| 03/14/2013 | US20130063216 Power off delay circuit and method, and audio system with power off delay |
| 03/14/2013 | US20130063214 Quiescent Control Circuit for Providing Control Current for an Amplifier |
| 03/14/2013 | US20130063213 Matrix distributed power amplifier |
| 03/14/2013 | US20130063207 Scheme to achieve robustness to electromagnetic interference in inertial sensors |
| 03/14/2013 | DE102011113431A1 Mikrofonverstärker Microphone Amplifier |
| 03/13/2013 | EP2568606A1 Electronic device with body-biasing circuit for portable equipment with USB connector for headset |
| 03/13/2013 | EP2568599A1 Amplifier circuit and method of amplifying a signal in an amplifier circuit |
| 03/13/2013 | EP2568598A1 Power amplifier for mobile telecommunications |
| 03/13/2013 | CN202798585U High-power power amplifier protector |
| 03/13/2013 | CN202798584U Voltage-controlled oscillator phase locked loop type down-conversion amplifier |
| 03/13/2013 | CN202798583U Radio frequency power amplifier circuit with high frequency, high linearity, high gain and wide frequency band |
| 03/13/2013 | CN102971963A Method and arrangement for driving a microphone |
| 03/13/2013 | CN102971962A Pseudo-envelope following power management system |
| 03/13/2013 | CN102969991A Low-offset automatic compensation circuit |
| 03/13/2013 | CN102969988A Class of power amplifiers for improved back off operation |
| 03/13/2013 | CN102969987A Undersampling-based broadband power-amplifier pre-distortion method |
| 03/13/2013 | CN102969986A Output circuit structure of radio frequency power amplifier |
| 03/13/2013 | CN102969985A Calibration systems for wireless electronic devices |
| 03/13/2013 | CN102969984A Low noise amplifier for current reuse and noise cancellation |
| 03/13/2013 | CN102969983A Broadband and low noise charge amplifying method |
| 03/13/2013 | CN102969982A Amplifier circuit with noise suppression and related noise suppression method thereof |
| 03/13/2013 | CN102969981A Center amplifier |
| 03/13/2013 | CN102967257A Strain amplification method with low power consumption and high sensitivity |
| 03/13/2013 | CN102185566B Radio frequency front end circuit and mobile terminal with the circuit |
| 03/13/2013 | CN101895260B Power series digital predistorter and control method therefor |
| 03/13/2013 | CN101764581B Integrated power amplifier for use in wireless communication devices |
| 03/12/2013 | US8395448 Apparatus and method for miller compensation for multi-stage amplifier |
| 03/12/2013 | US8395445 Power amplifier, non-linear distortion correcting method of power amplifier and radio communication device |
| 03/07/2013 | WO2013033700A1 Split vcc and common vcc power management architecture for envelope tracking |
| 03/07/2013 | WO2013031865A1 High-efficiency power amplifier |
| 03/07/2013 | WO2013031609A1 Amplifying apparatus and wireless communication apparatus |
| 03/07/2013 | WO2013031482A1 Power supply apparatus for generating plasma, method for setting parameter for generating plasma |
| 03/07/2013 | WO2013030815A1 Amplifier linearization using predistortion |
| 03/07/2013 | US20130057350 Apparatus and Method for Low Noise Amplification |
| 03/07/2013 | US20130057349 Cmos power amplifier |
| 03/07/2013 | US20130057348 Transimpedance Amplifier |
| 03/07/2013 | US20130057347 Amplifiers using gated diodes |
| 03/07/2013 | US20130057341 Amplifier circuit and feedback circuit |
| 03/07/2013 | US20130057340 Power supply device and power amplification apparatus using same |
| 03/07/2013 | DE102012215332A1 Eine klasse von leistungsverstärkern zum verbesserten backoff-betrieb A class of power amplifiers for improved backoff operation |
| 03/06/2013 | EP2566048A2 Amplifier circuit |
| 03/06/2013 | CN202772848U Fully third generation telecommunication (3G) complementary metal oxide semiconductor (CMOS) difference low noise amplifier based on controllable active inductor |
| 03/06/2013 | CN202772847U High-output-power audio amplification circuit |
| 03/06/2013 | CN202772844U Radio-frequency power device capable of adjusting working frequency |
| 03/06/2013 | CN202772843U Long term evolution (LTE) frequency range power amplifier protecting module |
| 03/06/2013 | CN202772842U Audio frequency amplifying circuit capable of restraining noise |
| 03/06/2013 | CN202772841U Symmetrical transformation type radio frequency power amplifier |
| 03/06/2013 | CN102959875A 半导体器件 Semiconductor devices |
| 03/06/2013 | CN102959858A Amplifier apparatus |
| 03/06/2013 | CN102957812A Method, device and system for reducing energy consumption of xDSL (x digital subscriber line) subscriber board |
| 03/06/2013 | CN102957388A System and method for low distortion capacitive signal source amplifier |
| 03/06/2013 | CN102957385A Amplifier with automatic zero setting function and relevant detection module |
| 03/06/2013 | CN102142816B Wideband current-recovery chopped-wave stabilized amplifier with low energy consumption on the basis of metal oxide semiconductor (MOS) device |
| 03/06/2013 | CN101971487B System and method of enabling a signal processing device in a relatively fast manner to process a low duty cycle signal |
| 03/06/2013 | CN101809861B Transmission device |
| 03/06/2013 | CN101808062B Digital predistortion processing circuit and method, power amplifying device and repeater |
| 03/05/2013 | US8392148 Comparison of data signals using characteristic electronic thumbprints extracted therefrom |
| 03/05/2013 | US8390380 Linear FET feedback amplifier |
| 03/05/2013 | US8390377 Distortion compensating circuit and radio base station |
| 03/05/2013 | US8390376 Non-linear model with tap output normalization |
| 03/05/2013 | US8390375 Calculating apparatus, distortion correcting apparatus, amplifying apparatus, and calculating method |
| 03/05/2013 | US8390372 Sample-and-hold amplifier |
| 02/28/2013 | WO2013028564A1 Apparatus and method for balancing combined rf power-supplies for driving a co2 gas-discharge laser |