| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 10/15/2002 | US6466084 Circuit for reducing third order intermodulation distortion for a broadband RF amplifier |
| 10/15/2002 | US6466061 High speed variable output power driver |
| 10/10/2002 | WO2002080356A2 Current sense automatic level control system with pre-bias |
| 10/10/2002 | WO2002080355A1 High-frequency amplifier |
| 10/10/2002 | WO2002080354A1 Amplifier |
| 10/10/2002 | WO2002080352A1 Balanced transformer-less amplifier and an offset detection and correction system therefore |
| 10/10/2002 | WO2002080301A1 Delay line filters using multiple in-line four-input couplers |
| 10/10/2002 | WO2002050995A3 Efficient, precise rf modulation using multiple amplifier stages |
| 10/10/2002 | US20020146998 Single-to-differential conversion circuit outputting DC-balanced differential signal |
| 10/10/2002 | US20020146996 Scanning receiver for use in power amplifier linearization |
| 10/10/2002 | US20020146993 Bias adjustment for power amplifier |
| 10/10/2002 | US20020145470 Linear envelope tracking RF power amplifier with adaptive analog signal processing |
| 10/10/2002 | DE10115391A1 Circuit for tube amplifier has pnp transistor electrically integrated into each end stage between anodes of systems of driver tubes and grids of end tubes |
| 10/10/2002 | DE10109817C1 Electrostatic discharge protection structure with bipolar input amplifier in the HF range has second voltage limiter circuit connected between the d.c. and HF reference potentials |
| 10/09/2002 | EP1248363A2 Controller for RF power generator with reduced cable length sensitivity |
| 10/09/2002 | EP1248362A1 Method and apparatus for increasing the efficiency of a transmitter |
| 10/09/2002 | EP1247337A1 Power amplifier core |
| 10/09/2002 | EP1247336A1 Circuit configuration and method for reducing the 1/f noise of mosfets |
| 10/09/2002 | EP1247335A2 Difference frequency impedance transformation circuits and methods for providing same in power amplifier systems |
| 10/09/2002 | EP1247334A2 Distortion reduction |
| 10/09/2002 | EP1166436B1 Non-linear distortion generator |
| 10/09/2002 | EP1101279B1 Amplifier output stage |
| 10/09/2002 | EP0710411B1 A method for a transmitter to compensate for varying loading without an isolator |
| 10/09/2002 | CN1373929A 放大器 Amplifier |
| 10/09/2002 | CN1373626A Offset control circuit |
| 10/08/2002 | US6463269 Power amplification system with intelligent control of amplifier modules |
| 10/08/2002 | US6462979 Integrated memory having memory cells with magnetoresistive storage effect |
| 10/08/2002 | US6462628 Isolator device with built-in power amplifier and embedded substrate capacitor |
| 10/08/2002 | US6462622 High-frequency amplifier and high-frequency multistage amplifier |
| 10/08/2002 | US6462617 Method and apparatus for calculating the predistortion function from a power amplifier model |
| 10/08/2002 | US6462600 Read-head preamplifier having internal offset compensation |
| 10/08/2002 | CA2285871C Amplifier with feedforward loops for rejecting non-linear distortion |
| 10/03/2002 | WO2002078281A1 Dual-mode tranmsitter |
| 10/03/2002 | WO2002078181A1 High frequency amplifier |
| 10/03/2002 | WO2002078178A1 Digitally controlled bias circuit for power amplifiers |
| 10/03/2002 | WO2002078177A1 Amplifying circuit |
| 10/03/2002 | WO2002078176A2 Digital baseband receiver in a multi-carrier power amplifier |
| 10/03/2002 | WO2002078175A1 Feedforward amplifier |
| 10/03/2002 | WO2002078174A1 Feed forward amplifier |
| 10/03/2002 | WO2002078173A2 System and method for rf signal amplification |
| 10/03/2002 | WO2002078172A2 Dynamic bias for a power amplifier |
| 10/03/2002 | WO2001084704A3 Rf power amplifier having high power-added efficiency |
| 10/03/2002 | US20020142790 Dynamic bias for a power amplifier |
| 10/03/2002 | US20020141603 Power-off noise suppression circuit and associated methods for an audio amplifier device |
| 10/03/2002 | US20020141509 Intermodulation distortion identification and quantization circuit for a linear amplifier system |
| 10/03/2002 | US20020140511 Current sense automatic level control system with pre-bias |
| 10/03/2002 | US20020140509 Efficient AC coupled CMOS RF amplifier |
| 10/03/2002 | US20020140508 Signal amplification device |
| 10/03/2002 | US20020140505 Amplitude limiting method for a differential amplifier |
| 10/03/2002 | US20020140503 High-frequency power amplifying apparatus |
| 10/03/2002 | US20020140492 Matching circuit and semiconductor device |
| 10/03/2002 | US20020139998 Voltage offset diode |
| 10/02/2002 | EP1246366A2 Temperature compensated slew rate control circuit |
| 10/02/2002 | EP1245079A1 Voltage level translation circuits |
| 10/02/2002 | EP1245078A1 Power amplifier and a method for operating a power amplifier |
| 10/02/2002 | EP1245077A1 Carrier-blanking mechanism for sweeping detector used to measure and correct rf power amplifier distortion |
| 10/02/2002 | CN1091893C 电压调节器 Voltage Regulator |
| 10/01/2002 | US6459556 Input buffer |
| 10/01/2002 | US6459340 Power amplifier mismatch protection with clamping diodes in RF feedback circuit |
| 10/01/2002 | US6459334 Amplifier measurement and modeling processes for use in generating predistortion parameters |
| 10/01/2002 | US6459332 Digitally-operated analog buffer amplifiers |
| 10/01/2002 | US6459326 Method for generating a substantially temperature independent current and device allowing implementation of the same |
| 09/26/2002 | WO2002075922A2 Circuit and method for input side impedance matching of a power amplifier in an electronic device |
| 09/26/2002 | WO2002075920A2 Segmented power amplifier and method of control |
| 09/26/2002 | WO2002075918A2 Modulator using class-e stage |
| 09/26/2002 | WO2002075786A2 Bond wire tuning of rf power transistors and amplifiers |
| 09/26/2002 | WO2002056558A3 Active filter circuit with dynamically modifiable internal gain |
| 09/26/2002 | WO2001086806A3 Apparatus and method for efficiently amplifying wideband envelope signals |
| 09/26/2002 | US20020137991 Methods, systems, and associated implantable devices for dynamic monitoring of physiological and biological properties of tumors |
| 09/26/2002 | US20020136325 System and methodfor RF signal amplification |
| 09/26/2002 | US20020136324 Circuit and method for compensating for non-linear distortion |
| 09/26/2002 | US20020135427 High-frequency power amplifier |
| 09/26/2002 | US20020135426 Digitally controlled bias circuit for amplifiers |
| 09/26/2002 | US20020135425 Full output matching apparatus of a microwave doherty amplifier |
| 09/26/2002 | US20020135423 Power amplifier module |
| 09/26/2002 | US20020135422 Distributed circular geometry power amplifier architecture |
| 09/26/2002 | US20020134993 Bond wire tuning of RF power transistors and amplifiers |
| 09/26/2002 | DE10112300A1 Transmit signal linearizing method in digital mobile network, involves feeding back measurement variables to perform numeric variation of compensated signal, and phase and amplitude adaptation of reference signal |
| 09/25/2002 | EP1244209A2 Miniaturized buffer amplifier and electronic circuit using same |
| 09/25/2002 | EP1244208A1 Power amplifying device |
| 09/25/2002 | EP1243109A1 An arrangement for reducing power dissipation in a line driver |
| 09/25/2002 | EP1243076A1 Linearisation method and signal processing device |
| 09/25/2002 | EP1242853A1 Electronic circuit |
| 09/25/2002 | CN1371546A Driving circuits for switch mode RF power amplifiers |
| 09/25/2002 | CN1371545A High-efficiency modulating RF amplifier |
| 09/25/2002 | CN1371168A High-efficiency sectional power amplifier |
| 09/24/2002 | US6456163 High-frequency amplifier circuit having a directly-connected bias circuit |
| 09/24/2002 | US6456160 Feedforward amplifier |
| 09/24/2002 | US6456158 Digitally programmable transconductor |
| 09/24/2002 | US6456140 Voltage level translation circuits |
| 09/24/2002 | CA2314108C Feed forward amplifier with digital intermodulation control |
| 09/19/2002 | WO2002073920A1 Distortion pre-corrector for communication apparatus |
| 09/19/2002 | WO2002073795A2 High efficciency switching amplifiers |
| 09/19/2002 | WO2002073794A2 Switchless multi-resonant, multi-band power amplifier |
| 09/19/2002 | WO2002073793A1 Feedforward amplifier |
| 09/19/2002 | US20020132652 Segmented power amplifier and method of control |
| 09/19/2002 | US20020132596 Power rate enhancement circuit for an RF power amplifier in a dual mode mobile phone |
| 09/19/2002 | US20020132444 Bias current and method of fabricating semiconductor device |
| 09/19/2002 | US20020131523 Circuit and method for compensating for non-linear distortion |
| 09/19/2002 | US20020131522 Method and apparatus for the digital predistortion linearization, frequency response compensation linearization and feedforward linearization of a transmit signal |