| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 08/11/2011 | US20110193633 Bioamplifier for neural interfaces |
| 08/11/2011 | US20110193632 Semiconductor integrated circuit device |
| 08/11/2011 | US20110193631 Amplifier |
| 08/11/2011 | US20110193627 Method and Amplifier for Cancelling Magnetic Coupling |
| 08/11/2011 | US20110193626 Frequency response compensation amplifier arrangements |
| 08/11/2011 | US20110193625 Amplifier for Cable and Terrestrial Applications with Independent Stage Frequency Tilt |
| 08/11/2011 | US20110193624 Tunable impedance inverter for doherty amplifier circuit |
| 08/11/2011 | US20110193623 Large Time Constant Steering Circuit and Instrumentation Amplifier Implementing Same |
| 08/11/2011 | CA2788409A1 Method and arrangement for driving a microphone |
| 08/10/2011 | EP2355357A1 Time-multiplexed residue amplifier |
| 08/10/2011 | EP2355352A1 Method and apparatus for outputting audio signal |
| 08/10/2011 | EP2355338A1 Tracking power supply, method for controlling power supply, and communication apparatus |
| 08/10/2011 | EP2353220A1 Active-time dependent bias current generation for switched-capacitor circuits |
| 08/10/2011 | EP2353219A1 An asymmetric multilevel outphasing architecture for rf amplifiers |
| 08/10/2011 | EP2353181A1 Common centroid electrostatic discharge protection for integrated circuit devices |
| 08/10/2011 | EP2030317B1 High efficiency linear power amplifiers with load compensation |
| 08/10/2011 | EP1723718B1 Eer modulator with power amplifier having feedback loop providing soft output impedance |
| 08/10/2011 | CN201928297U 三频段信号混合/分离器和三频段信号双向放大器 Tri-band signals are mixed / signal splitter and tri-band bidirectional amplifier |
| 08/10/2011 | CN201928239U 三相运算放大器 Three-phase operational amplifier |
| 08/10/2011 | CN201928238U 用于铁路客运广播系统的多功能网络音频功率放大器装置 Multifunction Network audio power amplifier devices for railway passenger broadcasting system |
| 08/10/2011 | CN102150368A Phase-compensated pulse width modulation circuit and digital/analog conversion device |
| 08/10/2011 | CN102150365A Level shifter |
| 08/10/2011 | CN102150363A Auto-correction feedback loop for offset and ripple suppression in a chopper-stabilized amplifier |
| 08/10/2011 | CN102150361A Baseband-derived RF digital predistortion |
| 08/10/2011 | CN102150340A Transmitters for wireless power transmission |
| 08/10/2011 | CN102148783A Baseband digital predistortion method and device and power amplification device |
| 08/10/2011 | CN102148606A 单电源隔离放大器 Single-supply isolation amplifier |
| 08/10/2011 | CN102148605A Radio frequency amplifier with effective decoupling |
| 08/10/2011 | CN101394166B Triangle wave generating circuit, pulse width modulation circuit and audio power amplifying circuit |
| 08/10/2011 | CN101388648B Multi-frequency multi-mode power amplifier and operating method thereof |
| 08/10/2011 | CN101378247B Low conductor amplifier |
| 08/10/2011 | CN101373953B Power amplifier |
| 08/10/2011 | CN101102094B Amplifier circuit |
| 08/10/2011 | CN101057395B Photodiode amplifier and method for magnifing photodiode output |
| 08/09/2011 | US7995972 Electronic component for communication device and semiconductor device for switching transmission and reception |
| 08/09/2011 | US7994865 Even order distortion cancellation in single-ended input, differential output amplifiers using feedback |
| 08/09/2011 | US7994864 Audio out unit |
| 08/09/2011 | US7994863 Electronic system having common mode voltage range enhancement |
| 08/09/2011 | US7994862 Circuit and method of temperature dependent power amplifier biasing |
| 08/09/2011 | US7994861 System and method for pre-charging a current mirror |
| 08/09/2011 | US7994859 High-speed, multi-stage class AB amplifiers |
| 08/09/2011 | US7994858 Operational trans-conductance amplifier with output clamp circuit |
| 08/09/2011 | US7994857 Dynamic constant power amplifier |
| 08/09/2011 | US7994854 Circuit with a power amplifier and amplification method |
| 08/09/2011 | US7994853 Class-D amplifier with dual feedback loop |
| 08/04/2011 | WO2011094101A1 Instrumentation amplifier calibration method, system and apparatus |
| 08/04/2011 | WO2011093996A2 Cmos power amplifiers having integrated one-time programmable (otp) memories |
| 08/04/2011 | WO2011093547A1 Power amplifier insensitive to load impedance changes |
| 08/04/2011 | WO2011093035A1 Power supply apparatus and digital amplifier |
| 08/04/2011 | WO2011092910A1 Power amplifier |
| 08/04/2011 | WO2011092769A1 Operational amplifier circuit, signal drive device, display device and offset voltage adjustment method |
| 08/04/2011 | WO2011092768A1 Operational amplifier circuit, signal drive device, display device and offset voltage adjustment method |
| 08/04/2011 | WO2011092767A1 Operational amplifier circuit, signal drive device, display device and offset voltage adjustment method |
| 08/04/2011 | US20110187461 Power amplifier |
| 08/04/2011 | US20110187460 CMOS power amplifiers having integrated one-time programmable (OTP) memories |
| 08/04/2011 | US20110187459 Emitter-follower type bias circuit |
| 08/04/2011 | US20110187458 Power amplifier |
| 08/04/2011 | US20110187456 Coupling Isolation Method and Operational Amplifier Using the Same |
| 08/04/2011 | US20110187451 Power amplifier |
| 08/04/2011 | US20110187272 Photosensor Circuits Including a Current Amplifier |
| 08/04/2011 | DE102011000414A1 Leistungsverstärker-Linearisierungs-Rückkopplungsverfahren und -systeme Power amplifier linearization feedback methods and systems |
| 08/04/2011 | DE102009057225A1 Electronic power amplifier stage for use as voltage amplifier for amplifying audio signal, has discrete semiconductor component i.e. transistor, utilized as active circuit element with operating point stabilization via current source |
| 08/03/2011 | EP2351216A1 A circuit comprising at least a first transistor group and a second transistor group |
| 08/03/2011 | EP2351212A1 Multiple-input and multiple-output amplifier having pseudo-differential inputs |
| 08/03/2011 | EP2351211A2 Power amplifier saturation detection |
| 08/03/2011 | EP2351210A1 Voltage clamp |
| 08/03/2011 | EP2351209A1 Amplifier with improved esd protection circuitry |
| 08/03/2011 | EP1994638B1 Hybrid feedback controlled oscillation modulator and switching power amplifier system |
| 08/03/2011 | EP1875606B1 Programmable microwave circuit |
| 08/03/2011 | EP1865597B1 Amplifier apparatus |
| 08/03/2011 | CN201918965U 信号隔离放大装置 Signal isolation amplifier means |
| 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 | CN102144196A Reference voltage generating circuit |
| 08/03/2011 | CN102142821A Gain-digitally adjustable fully-differential radio-frequency CMOS (complementary metal oxide semiconductor) driver amplifier |
| 08/03/2011 | CN102142820A Double-channel operational amplifier circuit |
| 08/03/2011 | CN102142819A Radio frequency power amplifier based on transformer |
| 08/03/2011 | CN102142818A Class-AB amplifier and over-temperature protection circuit thereof |
| 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 | CN101427461B Programmable low noise amplifier and method |
| 08/03/2011 | CN101427460B Output networks in combination with LINC technique |
| 08/02/2011 | US7991359 Receiver, transceiver circuit, signal transmission method, and signal transmission system |
| 08/02/2011 | US7991302 Method and apparatus for optical signaling |
| 08/02/2011 | US7990452 Apparatus, methods and systems for amplifier |
| 08/02/2011 | US7990223 High frequency module and operating method of the same |
| 08/02/2011 | US7990222 Converter with parallel coupled differential input pairs |
| 08/02/2011 | US7990220 RF power amplifier |
| 08/02/2011 | US7990218 Db-linear process-independent variable gain amplifier |
| 08/02/2011 | US7990217 Input system for a variable gain amplifier having class-AB transconductance stages |
| 08/02/2011 | US7990216 Cross-coupled low noise amplifier for cellular applications |
| 08/02/2011 | US7990215 Class D amplifier control circuit and method |
| 08/02/2011 | US7990211 Class D amplifier circuit |
| 08/02/2011 | CA2616323C Input drive control for switcher regulated power amplifier modules |
| 08/02/2011 | CA2376767C Transistor amplifier having reduced parasitic oscillations |
| 07/28/2011 | WO2011071950A3 Apparatus and method for implementing a differential drive amplifier and a coil arrangement |
| 07/28/2011 | WO2011032178A3 High resolution output driver |
| 07/28/2011 | US20110183636 Radio frequency transmitter having an amplifier with power supply modulation |
| 07/28/2011 | US20110182129 Sense amplifier having loop gain control |