| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 08/12/2008 | US7412064 Presence control for guitar amplifier |
| 08/12/2008 | US7411460 Elimination of dummy detector on optical detectors using input common mode feedback |
| 08/12/2008 | US7411459 Current mode transconductor tuning device |
| 08/12/2008 | US7411458 Method and apparatus for controlling an output voltage in a power amplifier |
| 08/12/2008 | US7411455 High output current buffer |
| 08/12/2008 | US7411454 Electron turbulence damping circuit for a complimentary-symmetry amplification unit |
| 08/12/2008 | US7411453 Tail-current steering circuit and method for rail-to-rail operational amplifier input stage |
| 08/12/2008 | US7411452 Low DC power rail-to-rail buffer amplifier for liquid crystal display application |
| 08/12/2008 | US7411451 Class AB folded cascode stage and method for low noise, low power, low-offset operational amplifier |
| 08/12/2008 | US7411450 Circuit and method for amplification of an electrical input signal |
| 08/12/2008 | US7411449 Composite power amplifier |
| 08/12/2008 | US7411448 Class-D amplifier |
| 08/12/2008 | US7411447 Dynamic pulse width modulation amplifiers |
| 08/12/2008 | US7411172 Method and apparatus for resetting a high speed latch circuit |
| 08/12/2008 | US7411171 Circuit for analyzing a signal reflected from an object |
| 08/12/2008 | CA2280128C Cmos architecture for a digital radio receiver |
| 08/07/2008 | WO2008095181A1 Method and system for increasing sampling frequency for switching amplifiers |
| 08/07/2008 | WO2008095173A1 Sampling frequency reduction for switching amplifiers |
| 08/07/2008 | WO2008095145A1 Low rf interference switching amplifier and method |
| 08/07/2008 | WO2008095044A2 Filter compensation for switching amplifiers |
| 08/07/2008 | WO2008094271A1 Chopper-stabilized instrumentation amplifier |
| 08/07/2008 | WO2008094270A1 Chopper-stabilized instrumentation amplifier for wireless telemetry |
| 08/07/2008 | WO2008094269A1 Chopper-stabilized instrumentation amplifier for impedance measurement |
| 08/07/2008 | WO2008093697A1 Microwave device, high frequency device and high frequency apparatus |
| 08/07/2008 | WO2008093665A1 Power voltage forming device and polar modulation transmission device |
| 08/07/2008 | WO2008093477A1 Rf amplification device |
| 08/07/2008 | WO2008054797A3 High efficiency digital power amplifier |
| 08/07/2008 | WO2007133510A3 Noise free implementation of pwm modulator combined with gate driver stage in a single die |
| 08/07/2008 | US20080186103 Radio frequency application circuit |
| 08/07/2008 | US20080186101 Biasing Scheme for Low-Voltage MOS Cascode Current Mirrors |
| 08/07/2008 | US20080186100 Variable-gain amplification circuit, receiver and receiver ic |
| 08/07/2008 | US20080186099 Power amplifier and multistage amplification circuit including same |
| 08/07/2008 | US20080186098 Circuit to prevent load-induced dc nonlinearity in an op-amp |
| 08/07/2008 | US20080186097 Audio power amplifier apparatus |
| 08/07/2008 | US20080186093 Switched capacitor amplifier with higher gain and improved closed-loop gain accuracy |
| 08/07/2008 | US20080186092 Shared linearity maintenance in power amplifiers |
| 08/07/2008 | US20080186091 Dual Transconductance Amplifiers and Differential Amplifiers Implemented Using Such Dual Transconductance Amplifiers |
| 08/07/2008 | US20080186089 Power amplifier |
| 08/07/2008 | CA2675382A1 Chopper-stabilized instrumentation amplifier |
| 08/06/2008 | CN101237269A Method for realizing single-channel RF bidirectional amplification in TDD system |
| 08/06/2008 | CN101237233A Output buffer with a controlled slew rate offset and source driver including the same |
| 08/06/2008 | CN101237222A Protection circuit of power amplifier |
| 08/06/2008 | CN101236738A LCD device repairing line operation amplification circuit and its drive method |
| 08/06/2008 | CN100409567C Amplifier circuit, transmission device, amplification method and transmission method |
| 08/06/2008 | CN100409566C Method and device for operating emission amplifier |
| 08/06/2008 | CN100409565C Variable bias control for switch mode RF amplifier |
| 08/05/2008 | US7409200 Module integration integrated circuits |
| 08/05/2008 | US7408993 Digital communication extender system and method |
| 08/05/2008 | US7408410 Apparatus for biasing a complementary metal-oxide semiconductor differential amplifier |
| 08/05/2008 | US7408409 Amplifier circuit with cross-coupled cascode transistors |
| 08/05/2008 | US7408406 Mode selection amplifier circuit usable in a signal acquisition probe |
| 08/05/2008 | US7408405 High-frequency power amplifier module |
| 08/05/2008 | US7408403 Circuits and methods for amplifying signals |
| 07/31/2008 | WO2008091325A1 Multimode amplifier for operation in linear and saturated modes |
| 07/31/2008 | WO2008090721A1 Power amplifier |
| 07/31/2008 | WO2008090712A1 Power amplifier |
| 07/31/2008 | WO2008090613A1 Distortion compensating apparatus |
| 07/31/2008 | WO2008090053A1 Transconductance amplifier with a filter for rejecting noise outside the useful band |
| 07/31/2008 | WO2008090051A1 Transconductance amplifier with improved linearity |
| 07/31/2008 | WO2008011370A3 Minimizing switching noise and its effects in auto-zeroed amplifiers |
| 07/31/2008 | US20080183098 Chopper-stabilized instrumentation amplifier for impedance measurement |
| 07/31/2008 | US20080180559 Apparatus, methods and systems for amplifier |
| 07/31/2008 | US20080180179 RF Power Amplifier Stability Network |
| 07/31/2008 | US20080180178 Power Amplifier with an Output Matching Network |
| 07/31/2008 | US20080180176 Sequential bias-controlled high power amplifier apparatus and method |
| 07/31/2008 | US20080180175 Variable gain amplifier and control method thereof |
| 07/31/2008 | US20080180174 Output buffer with a controlled slew rate offset and source driver including the same |
| 07/31/2008 | US20080180173 Differential signal comparator |
| 07/31/2008 | US20080180172 Low rf interference switching amplifier and method |
| 07/31/2008 | US20080180168 Amplifier, transmitter arrangement having an amplifier and method for amplifying a signal |
| 07/31/2008 | US20080180167 Modulated triangular wave amplifier |
| 07/31/2008 | US20080180166 Sigma-delta modulator with feedback for power amplifiers |
| 07/31/2008 | US20080180135 Hysteresis circuit applied to comparator and amplifier circuit thereof |
| 07/31/2008 | US20080179500 Photoelectric current integrating circuit |
| 07/31/2008 | US20080179496 Light receiving circuit and light coupling device |
| 07/31/2008 | DE4326133B4 Schneller Strom-Leseverstärker Faster current sense amplifier |
| 07/31/2008 | DE202007004422U1 Schaltungsanordnung zur Reduzierung der Offsetspannung eines Operationsverstärkers A circuit arrangement for reducing the offset voltage of an operational amplifier |
| 07/30/2008 | EP1950883A1 System and method for filtering harmonics of a power amplifier |
| 07/30/2008 | EP1949534A1 Amplifier |
| 07/30/2008 | EP1949533A2 Monolithic lna support ic |
| 07/30/2008 | EP1756943A4 Automatic current reduction biasing technique for rf amplifier |
| 07/30/2008 | EP1456943B1 Attenuation control for digital power converters |
| 07/30/2008 | EP1279223B1 Boosted high gain, very wide common mode range, self-biased operational amplifier |
| 07/30/2008 | CN101233684A Non-linear distortion detection method and distortion compensation amplifying device |
| 07/30/2008 | CN101232286A A/D converter |
| 07/30/2008 | CN101232273A Differential common collector amplifying circuit |
| 07/30/2008 | CN101231318A Voltage sampling circuit of anti-syntype diverter |
| 07/30/2008 | CN100407579C 电荷泵、含该电荷泵的时钟恢复电路及含该电路的接收器 The charge pump, including the charge pump clock recovery circuit and a receiver containing the circuit |
| 07/30/2008 | CN100407572C 场效应管偏置电路 FET bias circuit |
| 07/30/2008 | CN100406356C Power amplifier circuit with increased back-off capability and power added efficiency |
| 07/29/2008 | US7406339 On-chip detection circuit off-chip mechanical switch's open and close actions |
| 07/29/2008 | US7406018 Signal generating circuit and optical pickup device provided therewith |
| 07/29/2008 | US7405720 Analog buffer circuit, display device and portable terminal |
| 07/29/2008 | US7405680 Distortion compensator |
| 07/29/2008 | US7405626 Distributed amplifier having a variable terminal resistance |
| 07/29/2008 | US7405625 Common-mode control structures and signal converter systems for use therewith |
| 07/29/2008 | US7405624 Class AB source follower |
| 07/29/2008 | US7405623 Sensing circuit |
| 07/29/2008 | US7405622 Operational amplifier with less offset |
| 07/29/2008 | US7405621 Apparatus for amplifying differential signal |