| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 03/13/2013 | CN101227173B Method of forming an operational amplifier and structure thereof |
| 03/12/2013 | US8396376 Optical receiver circuit |
| 03/12/2013 | US8395452 Signal amplification circuits for receiving/transmitting signals according to input signal |
| 03/12/2013 | US8395451 Low 1/f noise high-frequency broadband amplifier (DC-12 GHz) |
| 03/12/2013 | US8395450 Doherty amplifier and semiconductor device |
| 03/12/2013 | US8395449 Network for controlling the power supply to a system of active elements |
| 03/12/2013 | US8395447 Low-noise amplifier |
| 03/12/2013 | US8395446 Dual-mode amplifier |
| 03/12/2013 | US8395443 Doherty amplifier |
| 03/12/2013 | US8395418 Voltage sensing circuit with reduced susceptibility to gain drift |
| 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 | WO2013031440A1 Semiconductor integrated circuit device and high frequency power amplifier module |
| 03/07/2013 | WO2012139071A4 Non foster circuit |
| 03/07/2013 | WO2012032390A8 Amplifier and amplifying method |
| 03/07/2013 | US20130057351 Current-Voltage Converter Having a Current Reflector, Input Stage of an Amplifier and Corresponding Amplifier |
| 03/07/2013 | US20130057349 Cmos power amplifier |
| 03/07/2013 | US20130057348 Transimpedance Amplifier |
| 03/07/2013 | US20130057346 Apparatus and method for low noise amplification |
| 03/07/2013 | US20130057345 Analog Circuit and Display Device and Electronic Device |
| 03/07/2013 | US20130057344 Differential rf amplifier |
| 03/07/2013 | US20130057343 High-frequency power amplifying device |
| 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 |
| 03/07/2013 | DE102012213730A1 Transimpedanzverstärker Transimpedance amplifier |
| 03/06/2013 | EP2566048A2 Amplifier circuit |
| 03/06/2013 | EP2564504A1 Hybrid networks |
| 03/06/2013 | CN202772857U Pulse width modulator equipment |
| 03/06/2013 | CN202772850U Multi-channel pre-amplifier in rail transit public address system |
| 03/06/2013 | CN202772849U Circuit capable of achieving operational amplifier full volt output |
| 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 | CN202772846U Audio amplifier circuit with stable gain |
| 03/06/2013 | CN202772845U Integrated symmetric type radio frequency power amplifier |
| 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 | CN102959859A Power amplifier with transistor input mismatching |
| 03/06/2013 | CN102959858A Amplifier apparatus |
| 03/06/2013 | CN102957388A System and method for low distortion capacitive signal source amplifier |
| 03/06/2013 | CN102957387A Output circuit |
| 03/06/2013 | CN102957386A Operational amplifier for control electric light source and battery management system |
| 03/06/2013 | CN102957385A Amplifier with automatic zero setting function and relevant detection module |
| 03/06/2013 | CN102957384A Integrated circuit |
| 03/06/2013 | CN102957383A Class d amplifier and control method |
| 03/06/2013 | CN102957382A Power amplifier |
| 03/06/2013 | CN102122923B D类放大器 Class D Amplifier |
| 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 | CN101689837B Amplifier with configurable DC-coupled or AC-coupled output |
| 03/06/2013 | CN101652924B Sampling frequency reduction for switching amplifiers |
| 03/06/2013 | CN101373955B Differential amplifier circuit and A/D converter |
| 03/05/2013 | US8390383 Amplifier for receiving intermittent optical signal |
| 03/05/2013 | US8390382 Power amplifier circuit |
| 03/05/2013 | US8390381 Two stage Doherty amplifier |
| 03/05/2013 | US8390379 Amplifier input stage and slew boost circuit |
| 03/05/2013 | US8390378 Method and apparatus for broadband input matching with noise and non-linearity cancellation in power amplifiers |
| 03/05/2013 | US8390374 Apparatus and method for amplification with high front-end gain in the presence of large DC offsets |
| 03/05/2013 | US8390373 Ultra-high efficiency switching power inverter and power amplifier |
| 02/28/2013 | WO2013028462A1 Multi-channel class-d audio amplifier with planar inductors |
| 02/28/2013 | WO2013027538A1 Transmitter |
| 02/28/2013 | WO2013027498A1 Distortion-compensating amplification device and distortion-compensating amplification method |
| 02/28/2013 | US20130051582 System and Method for Low Distortion Capacitive Signal Source Amplifier |
| 02/28/2013 | US20130049877 Modulator and an amplifier using the same |
| 02/28/2013 | US20130049873 System and method for providing improved impedance matching to rf power transistor using shunt inductance |
| 02/28/2013 | US20130049872 Power amplifier system |
| 02/28/2013 | US20130049871 Thermally coupled current limiter |
| 02/28/2013 | US20130049870 Power amplifier system |
| 02/28/2013 | US20130049869 Temperature compensated feedforward linearizer |
| 02/28/2013 | US20130049867 Class of power amplifiers for improved back off operation |
| 02/28/2013 | US20130049866 Amplifier circuit with noise suppression and related noise suppression method thereof |
| 02/28/2013 | US20130049865 Voltage controlled variable gain amplifier circuit |
| 02/28/2013 | US20130049864 Semiconductor integrated circuit device |
| 02/28/2013 | US20130049863 Multi-Input Differential Amplifier With Dynamic Transconductance Compensation |
| 02/28/2013 | US20130049862 Switching circuit and envelope signal amplifier |
| 02/28/2013 | US20130049858 Envelope tracking system for mimo |
| 02/28/2013 | US20130049857 High gain amplifier method using low-valued resistances |
| 02/28/2013 | US20130049856 Self Oscillating Modulator |
| 02/28/2013 | US20130049855 Integrated circuit |
| 02/28/2013 | US20130049718 Class d amplifier and control method |
| 02/27/2013 | EP2562936A2 Differential integrated input circuit |
| 02/27/2013 | EP2562933A1 Class D amplifier and control method |
| 02/27/2013 | EP2562932A1 Integrated circuit |
| 02/27/2013 | EP2562931A1 Integrated circuit and test method |
| 02/27/2013 | EP2562930A1 Class D amplifier and control method |
| 02/27/2013 | EP2562929A1 High gain amplifier method using low-valued reistances |
| 02/27/2013 | EP2561612A1 Power amplifier with low noise figure and voltage variable gain |
| 02/27/2013 | EP2561611A1 Pseudo-envelope following power management system |
| 02/27/2013 | CN202759417U Photo-communication trans-impedance amplifier with stable compensation device |
| 02/27/2013 | CN102948072A Noise-canceling for differential amplifiers requiring no external matching |
| 02/27/2013 | CN102947720A Gradient coil power supply and a magnetic resonance imaging system |
| 02/27/2013 | CN102946234A High-precision amplifying circuit for detecting yarn tension |
| 02/27/2013 | CN102946233A High Sensitivity Optical Receiver Employing a High Gain Amplifier and an Equalizing Circuit |
| 02/27/2013 | CN102941366A Electric drill with amplifying circuit for ultrasonic detection |
| 02/27/2013 | CN102941365A Electric drill provided with amplifier circuit for ultrasonic detection |
| 02/27/2013 | CN102158188B Low-power consumption bandwidth-multiplying operational amplifier realized by metal oxide semiconductor (MOS) devices |
| 02/27/2013 | CN102158181B Low-power consumption bandwidth multiplication chopping stabilized operational amplifier based on MOS (metal oxide semiconductor) device |
| 02/27/2013 | CN102045035B Low-power consumption broadband high-gain high-swing rate single-level operation transconductance amplifier |
| 02/27/2013 | CN101917169B High-bandwidth low-power consumption frequency-compensation three-stage operational amplifier |
| 02/27/2013 | CN101917168B High switching rate transconductance amplifier for active power factor corrector |