| 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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| 03/28/2001 | CN1063892C AM-FM transmitter power amplifier using class-BC |
| 03/27/2001 | US6208950 Noise reduction method for a semiconductor device |
| 03/27/2001 | US6208845 Frequency modulation method and frequency modulated signal transmitter |
| 03/27/2001 | US6208208 Operationally amplifying method and operational amplifier |
| 03/27/2001 | US6208207 Adaptive linearizer for RF power amplifiers |
| 03/27/2001 | US6208206 Frequency compensation techniques for low-power multistage amplifiers |
| 03/27/2001 | US6208205 Amplifier circuit and method for reducing noise therein |
| 03/27/2001 | US6208204 Feedforward amplifier |
| 03/27/2001 | US6208203 Low-noise amplifier |
| 03/27/2001 | US6208202 High efficiency switched gain power amplifier |
| 03/22/2001 | WO2001020777A1 Impedance adapting amplifier device for low frequency with electronic tubes insertible on line in the path of the low frequency signal |
| 03/22/2001 | WO2001020776A1 Method for linearising a high-frequency amplifier |
| 03/22/2001 | WO2001020775A1 A lineariser for a signal handling apparatus |
| 03/21/2001 | EP1085653A1 A technique to generate negative conductance in CMOS tuned cascode RF amplifier |
| 03/20/2001 | US6204731 Power amplifier |
| 03/20/2001 | US6204730 Power amplifier arrangement |
| 03/20/2001 | US6204729 H-bridge power amplifier for a motor |
| 03/20/2001 | US6204728 Radio frequency amplifier with reduced intermodulation distortion |
| 03/20/2001 | US6204724 Reference voltage generation circuit providing a stable output voltage |
| 03/20/2001 | US6204718 Method and apparatus for generating second-order predistortion without third-order distortion |
| 03/20/2001 | CA2021617C Feedforward predistortion linearizer |
| 03/15/2001 | WO2001018958A1 An amplifier for use in a mobile phone |
| 03/15/2001 | WO2001018957A1 Amplifier |
| 03/15/2001 | WO2001018956A1 High efficiency power amplifier |
| 03/15/2001 | WO2001018865A1 High-frequency power amplification module and radio communication device |
| 03/15/2001 | DE10035066A1 Load adjusting system for power amplifier for battery-powered radiotelephone has processing circuit which retrieves stored control values to generate load control signal |
| 03/15/2001 | DE10013716A1 Transmit power control method for wireless communication terminal calculates compensation value for loss due to temperature variations |
| 03/14/2001 | EP1083655A2 Amplifier circuit |
| 03/14/2001 | EP0885484A4 Fat sound creation means |
| 03/14/2001 | CN1287712A Method and arrangement for correcting phase error in linearization loop of power amplifier |
| 03/14/2001 | CN1287415A Method and apparatus using for automatic predistortion system |
| 03/14/2001 | CN1287407A Power amplifier for mobile telephone set |
| 03/14/2001 | CN1287349A Equipment for scanning optical recording medium |
| 03/13/2001 | US6201444 Current source bias circuit with hot carrier injection tracking |
| 03/13/2001 | US6201442 Amplifying circuit |
| 03/13/2001 | US6201430 Computational circuit |
| 03/08/2001 | WO2001017105A1 Current source bias circuit with hot carrier injection tracking |
| 03/08/2001 | WO2001017104A1 Feedforward amplifier |
| 03/08/2001 | WO2001017103A1 Method and apparatus for improving resolution in spectrometers processing output steps from non-ideal signal sources |
| 03/07/2001 | EP1081850A2 Power amplifying apparatus for mobile phone |
| 03/07/2001 | EP1081849A1 Dual band amplifier circui and radio frequency receiving unit |
| 03/07/2001 | EP1081573A1 High-precision biasing circuit for a cascoded CMOS stage, particularly for low noise amplifiers |
| 03/07/2001 | CN2422778Y Electric current audio frequency amplifier |
| 03/07/2001 | CN1062997C Grounded base transistor amplifier |
| 03/07/2001 | CN1062995C Negative-resistance-compensated microwave buffer |
| 03/06/2001 | US6198586 Voice recording/playback apparatus for producing a noise level of a voice output unit in a voice recording mode |
| 03/06/2001 | US6198352 Radio frequency low noise amplifier fabricated in complementary metal oxide semiconductor technology |
| 03/06/2001 | US6198351 Power sensing apparatus for power amplifiers |
| 03/06/2001 | US6198348 Differential circuit with reverse isolation |
| 03/06/2001 | US6198347 Driving circuits for switch mode RF power amplifiers |
| 03/06/2001 | US6198346 Adaptive linear amplifier without output power loss |
| 03/06/2001 | US6198309 Emitter follower output with programmable current |
| 03/06/2001 | US6198138 Analogue misfet with threshold voltage adjuster |
| 02/28/2001 | EP1079518A2 Method and apparatus for an automatic predistortion system |
| 02/28/2001 | EP1079517A2 Adaptive gain and/or phase adjustment control system and method |
| 02/28/2001 | EP1079516A2 Alternating gain and phase control system and method |
| 02/28/2001 | EP1079515A1 MOSFET amplifier circuit |
| 02/28/2001 | EP0806081B1 Circuit for briefly muting the reproduction of a low-frequency signal in a radio receiver |
| 02/28/2001 | CN1285974A Method and device in a telecommunication system |
| 02/28/2001 | CN1285973A Linear RF power amplifier with optically activated switches |
| 02/28/2001 | CN1285654A Self-adaption gain and/or phase regulation control system and method thereof |
| 02/28/2001 | CN1285653A Electronic tuner |
| 02/27/2001 | US6194968 Temperature and process compensating circuit and controller for an RF power amplifier |
| 02/27/2001 | US6194964 Predistorter having an automatic gain control circuit and method therefor |
| 02/27/2001 | US6194963 Circuit and method for I/Q modulation with independent, high efficiency amplitude modulation |
| 02/27/2001 | US6194957 Current mirror for preventing an extreme voltage and lock-up |
| 02/27/2001 | US6194942 Predistortion circuit for linearization of signals |
| 02/27/2001 | US6194698 Electro-optical sensor circuitry |
| 02/21/2001 | CN1285089A Method and apparatus for wideband predistortion linearization |
| 02/21/2001 | CN1062395C Method and arrangement for controlling the operation of high-frequency power amplifier |
| 02/20/2001 | US6191656 High efficiency, unilateral dual stage RF amplifier |
| 02/20/2001 | US6191653 Circuit and method for linearizing amplitude modulation in a power amplifier |
| 02/20/2001 | US6191652 Amplifier distortion correction using cross-modulation |
| 02/20/2001 | US6191637 Switched capacitor bias circuit for generating a reference signal proportional to absolute temperature, capacitance and clock frequency |
| 02/20/2001 | CA2161901C A method for a transmitter to compensate for varying loading without an isolator |
| 02/15/2001 | WO2001011769A1 Methods for calibration of radio devices at room temperature |
| 02/14/2001 | EP1076412A2 Feed-forward amplifier and method of compensating non-linear distortion in the same |
| 02/14/2001 | EP1075733A1 Class-ab output stages with improved distortion performance |
| 02/14/2001 | EP1075732A1 A method in the compensation of unlinearities in an amplifier, an amplifier, and uses of the method and the amplifier |
| 02/14/2001 | EP1075731A1 Linearization method for amplifier, and amplifier arrangement |
| 02/14/2001 | CN1283894A Integrated free plate automatic calibration of low distortion amplifier |
| 02/13/2001 | US6188877 Dual-band, dual-mode power amplifier with reduced power loss |
| 02/13/2001 | US6188732 Digital feedforward amplifier for use in an RF transmitter and method of operation |
| 02/13/2001 | US6188284 Distributed gain line driver amplifier including improved linearity |
| 02/13/2001 | US6188283 Amplifier and semiconductor device therefor |
| 02/13/2001 | US6188281 Linear transconductance circuits having class AB amplifiers parallel coupled with concave compensation circuits |
| 02/13/2001 | US6188280 Differential amplifier with gain linearization through transconductance compensation |
| 02/13/2001 | US6188279 Low cost miniature broadband linearizer |
| 02/13/2001 | US6188277 Power amplifier having monitoring and circuit protection |
| 02/13/2001 | CA2178665C Power shared linear amplifier network |
| 02/08/2001 | WO2001010047A1 Isolator with built-in power amplifier |
| 02/08/2001 | WO2001010017A1 Break-before-make distortion compensation for a digital amplifier |
| 02/08/2001 | WO2001010016A1 Dynamic switching frequency control for a digital switching amplifier |
| 02/08/2001 | WO2001010015A1 Driving circuits for switch mode rf power amplifiers |
| 02/08/2001 | WO2001010014A1 Intermodulation product cancellation circuit |
| 02/08/2001 | WO2001010013A1 High-efficiency modulating rf amplifier |
| 02/08/2001 | WO2001010012A1 Dc offset calibration for a digital switching amplifier |
| 02/08/2001 | WO2000069245A3 Output buffer with independently controllable current mirror legs |
| 02/08/2001 | WO2000046919A3 A circuit for compensating noise and errors from an output stage of a digital amplifier |
| 02/08/2001 | DE19933545A1 Anordnung zur Linearisierung einer Verstärkerschaltung Arrangement for linearization of an amplifier circuit |