| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 06/04/2002 | US6400223 Double carrier cancellation in wide band multi-carrier feed forward linearized power amplifier |
| 06/04/2002 | US6400222 Linearizer |
| 06/04/2002 | US6400221 Audio amplifier system with discrete digital frequency selective damping factor controls |
| 06/04/2002 | US6400207 Quick turn-on disable/enable bias control circuit for high speed CMOS opamp |
| 05/30/2002 | WO2002043241A1 Lineariser |
| 05/30/2002 | WO2002043240A1 Amplifier circuit |
| 05/30/2002 | WO2002043239A2 Feed forward amplifier |
| 05/30/2002 | US20020065623 Bit rate discrimination device with temperature compensation function |
| 05/30/2002 | US20020065048 Method and apparatus for compensating for distortion in radio apparatus |
| 05/30/2002 | US20020064236 Transmission apparatus |
| 05/30/2002 | US20020063603 High frequency power amplifier |
| 05/30/2002 | US20020063602 High-frequency power amplifier |
| 05/30/2002 | US20020063601 Semiconductor device with bipolar transistor device |
| 05/30/2002 | US20020063598 Amplifier with stabilization means |
| 05/30/2002 | US20020063590 Low power circuit with proper slew rate by automatic adjustment of bias current |
| 05/30/2002 | CA2436582A1 Feed forward amplifier |
| 05/30/2002 | CA2429740A1 Amplifier circuit with control means for optimizing efficiency |
| 05/28/2002 | US6396933 High-fidelity and high-efficiency analog amplifier combined with digital amplifier |
| 05/28/2002 | US6396352 CMOS power amplifier for driving low impedance loads |
| 05/28/2002 | US6396350 Power booster method and apparatus for improving the performance of radio frequency linear power amplifiers |
| 05/28/2002 | US6396349 Traveling wave power combiner and radio base station |
| 05/28/2002 | US6396348 Circuit for dealing with higher harmonics and circuit for amplifying power efficiency |
| 05/28/2002 | US6396346 Low noise magneto-resistive read head preamplifier |
| 05/28/2002 | US6396345 Phase and amplitude detector and method of determining errors |
| 05/28/2002 | US6396344 Amplifier linearization by learned linear behavior |
| 05/28/2002 | US6396342 Microwave amplifier generating distortion-reduced high output microwave power |
| 05/28/2002 | US6396341 Class E Doherty amplifier topology for high efficiency signal transmitters |
| 05/28/2002 | US6396331 Mechanism for minimizing undesirable effects of parasitic components in integrated circuits |
| 05/28/2002 | CA2262361C Method and apparatus for tailored distortion of a signal prior to amplification |
| 05/23/2002 | WO2002011379A8 Method and apparatus for adaptive digital predistortion in a radio transmitter |
| 05/23/2002 | WO2001065682A3 Method and transmission circuit for producing a transmission signal |
| 05/23/2002 | US20020061074 Distortion compensation apparatus and distortion compensation method |
| 05/23/2002 | US20020060608 Electronic apparatus comprising a power amplifier |
| 05/23/2002 | US20020060606 Method and apparatus for reducing distortion |
| 05/23/2002 | US20020060598 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor |
| 05/23/2002 | DE10153127A1 Audioverstärker mit Lautstärkesteuerung Audio amplifier with volume control |
| 05/22/2002 | EP1206834A1 Methods for calibration of radio devices at room temperature |
| 05/22/2002 | EP1206833A1 Integrated tunable high efficiency power amplifier |
| 05/22/2002 | EP1206832A1 Method and apparatus for improving resolution in spectrometers processing output steps from non-ideal signal sources |
| 05/22/2002 | CN1085439C Semiconductor circuit having stable gain slpe |
| 05/22/2002 | CN1085438C 参考电压生成电路 A reference voltage generating circuit |
| 05/21/2002 | US6393262 Difference frequency impedance transformation circuits and methods for providing same in power amplifier systems |
| 05/21/2002 | US6393259 Amplifier circuit and transceiver |
| 05/21/2002 | US6392492 High linearity cascode low noise amplifier |
| 05/21/2002 | US6392490 High-precision biasing circuit for a cascoded CMOS stage, particularly for low noise amplifiers |
| 05/21/2002 | US6392485 High slew rate differential amplifier circuit |
| 05/21/2002 | US6392484 Amplifier with combined pulsed energy output and linear type output |
| 05/21/2002 | US6392483 Feed-forward amplifier |
| 05/21/2002 | US6392482 Method for linearizing, over a wide frequency band a transmission chain comprising a power amplifier |
| 05/21/2002 | US6392481 Method and apparatus for improved fed forward amplification |
| 05/21/2002 | US6392480 Alternating gain and phase control system and method |
| 05/21/2002 | US6392478 Amplification device having an adjustable bandwidth |
| 05/21/2002 | US6392477 Amplification circuit for electric charge type sensor |
| 05/21/2002 | US6392464 Wide bandwidth circuits for high linearity optical modulators |
| 05/21/2002 | US6392393 Controlled current, voltage mode driving stage |
| 05/21/2002 | CA2261431C Method for adaptively controlling amplifier linearization devices |
| 05/16/2002 | WO2002039581A2 High speed output buffers using voltage followers |
| 05/16/2002 | WO2002039577A2 Linear modulation using a linear and a non-linear amplifier |
| 05/16/2002 | WO2002005053A3 Circuit for providing a constant current |
| 05/16/2002 | WO2001091522A3 Method and apparatus for programmable power curve and wave generator |
| 05/16/2002 | WO2001063744A3 Phasen- und frequenzmodulator |
| 05/16/2002 | US20020058486 Communications systems |
| 05/16/2002 | US20020057132 Differential amplifier having improved balance and linearity |
| 05/16/2002 | US20020057131 High-frequency power amplifier, wireless communication apparatus and wireless communication system |
| 05/16/2002 | US20020057130 Isolator circuit |
| 05/16/2002 | CA2428408A1 High speed output buffers using voltage followers |
| 05/15/2002 | EP1206033A2 Isolator circuit |
| 05/15/2002 | EP1205025A1 Amplifier having bias circuit self-compensating for vgs process variation and ids aging |
| 05/15/2002 | EP1205024A1 Amplifier measurement and modeling processes for use in generating predistortion parameters |
| 05/15/2002 | CN1349680A Method and apparatus for controlling the common mode impedance misbalance of an isolated sigle-ended circuit |
| 05/15/2002 | CN1349679A 信号处理 Signal Processing |
| 05/15/2002 | CN1349303A Adaptive linear power amplifier and its adaptive method |
| 05/15/2002 | CN1084986C Amplifier having distortion compensation and base station for radio communication using the same |
| 05/15/2002 | CN1084967C Transmitter having temp.-compensated detector |
| 05/15/2002 | CN1084964C 运算放大器 Operational Amplifier |
| 05/14/2002 | US6388855 Transistor protecting circuit with enhancing circuit for H bridge circuit |
| 05/14/2002 | US6388530 Microwave amplifier implemented by heterojunction field effect transistors |
| 05/14/2002 | US6388529 Grounded emitter amplifier and a radio communication device using the same |
| 05/14/2002 | US6388527 Semiconductor circuit with a stabilized gain slope |
| 05/14/2002 | US6388520 Semiconductor integrated circuit |
| 05/14/2002 | US6388519 Multi-input differential amplifier circuit |
| 05/14/2002 | US6388518 Distortion compensation apparatus |
| 05/14/2002 | US6388515 Feedforward amplifier |
| 05/14/2002 | US6388514 Class D high voltage amplifier system with adaptive power supply |
| 05/14/2002 | US6388513 Amplifier measurement and modeling processes for use in generating predistortion parameters |
| 05/14/2002 | US6388507 Voltage to current converter with variation-free MOS resistor |
| 05/14/2002 | US6388502 Semiconductor integrated circuit |
| 05/10/2002 | WO2002037672A2 Multiple-voltage supply power amplifier with dynamic headroom control |
| 05/10/2002 | WO2002037671A1 Integrated circuit with current sense circuit and associated methods |
| 05/10/2002 | WO2002037670A1 Linearization method and amplifier arrangement |
| 05/10/2002 | WO2002037669A1 Amplifier linearisation |
| 05/10/2002 | WO2002037668A1 Method and apparatus for controlling an amplifier |
| 05/10/2002 | WO2002015393A3 Digital class-d audio amplifier |
| 05/10/2002 | WO2002013402A3 Control of receiver immunity to interference by controlling linearity |
| 05/10/2002 | WO2001095482A3 Method and apparatus for amplifier output biasing for improved overall temperature stability |
| 05/10/2002 | WO2001080423A3 Method and apparatus for dynamic sound optimization |
| 05/09/2002 | US20020056137 Twisted pair communications line system |
| 05/09/2002 | US20020055349 Self-tuned millimeter wave RF Transceiver module |
| 05/09/2002 | US20020053947 Impedance matching low noise amplifier having a bypass switch |
| 05/09/2002 | US20020053945 Switching power amplifier |