| 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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| 04/15/2004 | US20040070449 Amplifier linearisation |
| 04/15/2004 | US20040070448 Method and system for linearizing an amplified signal |
| 04/15/2004 | US20040070446 Low noise, electric field sensor |
| 04/15/2004 | DE20303983U1 Tubular transistor end-stage screened against stray inductance, comprising amplifier of low stray, annular core transformers, with fore- and end-stage tubes and output |
| 04/15/2004 | DE10296406T5 Automatische Verstärkerregelungsschaltung mit hoher Linearität und monoton-korrelierer Versatzspannung Automatic gain control circuit with high linearity and monotonically-correlator offset voltage |
| 04/15/2004 | DE10219317B4 Mobiles Kommunikationsendgerät The mobile communication terminal |
| 04/14/2004 | EP1407542A2 A communication system and arrangements comprising such a communication system |
| 04/14/2004 | EP1407541A2 Low-noise amplifying circuit |
| 04/14/2004 | EP1147601B1 Level shift circuit |
| 04/14/2004 | EP0881807B1 Tansmitter with linearised amplifier |
| 04/14/2004 | CN2612153Y Combined feedback power amplifier |
| 04/14/2004 | CN1489827A Method and apparatus relating electronic compensation |
| 04/14/2004 | CN1489826A High-frequency amplifier with dependent control of quiescent current and bias impedance |
| 04/14/2004 | CN1146104C Amplifier apparatus with transient recovery aid |
| 04/13/2004 | US6721549 Low-noise amplifier for a mobile communication terminal |
| 04/13/2004 | US6721370 Phase correction circuit for radio communication apparatus |
| 04/13/2004 | US6720832 System and method for converting from single-ended to differential signals |
| 04/13/2004 | US6720831 Power amplifier protection circuit |
| 04/13/2004 | US6720829 Distortion-compensated amplifying circuit |
| 04/13/2004 | US6720825 Method and circuit for reduction of audible turn-on and turn-off transients in switching amplifiers |
| 04/13/2004 | US6720228 Current source bias circuit with hot carrier injection tracking |
| 04/13/2004 | US6718740 Inserting apparatus and method with controlled, master cycle speed-dependent actuator operations |
| 04/08/2004 | WO2004030246A1 A transmitter and a method of calibrating power in signals output from a transmitter |
| 04/08/2004 | WO2004030231A1 Method for optimizing an operating point of a power amplifier in a wcdma mobile terminal |
| 04/08/2004 | WO2004030207A2 Variable gain amplifier |
| 04/08/2004 | WO2004030206A1 Amplification device |
| 04/08/2004 | WO2003069773A3 Deed forward rf power amplifier with high efficiency main amplifier and highly linear error amplifier |
| 04/08/2004 | WO2003056698A3 Power amplifier |
| 04/08/2004 | WO2003044932A3 Switched mode power amplifier |
| 04/08/2004 | US20040066237 Amplifier circuit for AM broadcasting |
| 04/08/2004 | US20040066234 Capacitor coupled dynamic bias boosting circuit for a power amplifier |
| 04/08/2004 | US20040066231 Amplifying circuit for transmitter capable of reducing noise |
| 04/08/2004 | DE19529267B4 Kompensationsanordnung für einen Fernseh-HF-Leistungsverstärker Compensation arrangement for a television RF power amplifier |
| 04/07/2004 | EP1405480A1 Predistortion linearization device and method |
| 04/07/2004 | EP1405406A2 Bias method and circuit for distortion reduction |
| 04/07/2004 | EP1405405A2 Method for adjusting the amplification of a high frequency signal |
| 04/07/2004 | EP1405404A1 Signal correction techniques |
| 04/07/2004 | EP1405403A1 Self-biased cascode rf power amplifier in sub-micron |
| 04/07/2004 | EP1405402A2 Compact cascode radio frequency cmos power amplifier |
| 04/07/2004 | EP1405401A1 Linear amplifier using non-linear cmos capacitors |
| 04/07/2004 | EP1405089A1 Distortion detector |
| 04/07/2004 | EP1142106B1 Amplifier circuit |
| 04/07/2004 | CN1488201A Continuous closed-loop power control system including modulation injection in a wireless transceiver power amplifier |
| 04/07/2004 | CN1488190A High frequency power amplifier and power amplifier module utilizing the same |
| 04/07/2004 | CN1488189A Amplifier circuit |
| 04/07/2004 | CN1487759A 发送机 Transmitter |
| 04/07/2004 | CN1145379C Method and device for amplifying transmission power |
| 04/07/2004 | CN1145258C Bias circuit for RF power amplifier |
| 04/06/2004 | US6718164 Dynamic method and apparatus for controlling device temperature during continuous transmissions |
| 04/06/2004 | US6717981 Transmitter image suppression in TDD transceivers |
| 04/06/2004 | US6717783 Short circuit power limiter |
| 04/06/2004 | US6717473 Method of forming an audio amplifier voltage reference and structure therefor |
| 04/06/2004 | US6717469 Gain control circuit for controlling a gain in a variable gain cell |
| 04/06/2004 | US6717464 Distortion compensating apparatus |
| 04/06/2004 | US6717463 Circuit for linearizing electronic devices |
| 04/06/2004 | US6717461 Circuits with dynamic biasing |
| 04/06/2004 | US6717451 Precision analog level shifter with programmable options |
| 04/01/2004 | WO2004027990A1 Preserving linearity of a rf power amplifier |
| 04/01/2004 | WO2004027988A1 Variable gain amplifier |
| 04/01/2004 | WO2004027984A1 Efficient power control of a power amplifier by periphery switching |
| 04/01/2004 | WO2004027983A2 Saturated power amplifier with selectable and variable output power levels |
| 04/01/2004 | WO2004027982A2 Linear power amplifier with multiple output power levels |
| 04/01/2004 | WO2004027827A2 Integrated circuit with automatic polarity detection and configuration |
| 04/01/2004 | WO2003094202A3 Micro circuits with a sculpted ground plane |
| 04/01/2004 | WO2003091845A3 Microarray performance management system |
| 04/01/2004 | WO2003034391A3 Method and system for adjusting the voltage of a precharge circuit |
| 04/01/2004 | US20040061637 Sample-and-hold amplifier circuit and pipelined A/D and D/A converters using sample hold amplification circuit |
| 04/01/2004 | US20040061635 Stepwise zero-data-detection mute circuit |
| 04/01/2004 | US20040061557 Amplifier power control circuit |
| 04/01/2004 | US20040061555 Controller for an RF power amplifier |
| 04/01/2004 | US20040061553 Signal amplifier |
| 04/01/2004 | US20040061552 Class D amplifier |
| 04/01/2004 | US20040061214 Packaged RF power transistor having RF bypassing/output matching network |
| 03/31/2004 | EP1402700A1 Adaptive predistorter based on the probability distribution function of the output amplitude |
| 03/31/2004 | EP1402627A1 Stage of a power generator of high frequency current |
| 03/31/2004 | EP1402626A1 Feed forward amplifying circuit |
| 03/31/2004 | EP1402625A1 Composite amplifier with optimized linearity and efficiency |
| 03/31/2004 | EP1169775B1 Predistortion generator coupled with an rf amplifier |
| 03/31/2004 | EP0927453A4 Three state output method and apparatus for high speed amplifiers |
| 03/31/2004 | CN1486531A Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 03/31/2004 | CN1485980A Method for reducing output noise of power amplifier |
| 03/31/2004 | CN1485979A Multi-level output circuit |
| 03/31/2004 | CN1485810A Rotating transfer mechanism and zooming camera having the same |
| 03/31/2004 | CN1144355C Signal amplifying circuit having capacitor with top and bottom surface of different area |
| 03/31/2004 | CN1144187C Equipment for scanning optical recording medium |
| 03/30/2004 | US6714082 Semiconductor amplifier circuit |
| 03/30/2004 | US6714081 Active current bias network for compensating hot-carrier injection induced bias drift |
| 03/30/2004 | US6714078 Sensor structures and methods for reduction of differential-heating signal errors in integrated circuits |
| 03/30/2004 | US6714077 Operational amplifier having large output current with low supply voltage |
| 03/30/2004 | US6714076 Buffer circuit for op amp output stage |
| 03/30/2004 | US6714074 Power amplifier clipping circuit for minimizing output distortion |
| 03/30/2004 | US6714073 Predistortion type distortion compensation amplification apparatus |
| 03/30/2004 | US6714072 Distortion reduction |
| 03/30/2004 | US6714068 Circuit configuration with selectively operating amplifiers |
| 03/30/2004 | US6714054 Area efficient waveform evaluation and DC offset cancellation circuits |
| 03/25/2004 | WO2004025885A2 Apparatus and method, improving output signal from nonlinear device through dynamic signal pre-distortion based upon lagrange interpolation |
| 03/25/2004 | WO2004025830A1 Circuit and method for eliminating pop noise in digital audio amplifier using dual power supply |
| 03/25/2004 | WO2003075455A3 Amplifier circuits and their use in radio frequency transmitters |
| 03/25/2004 | WO2003069774A3 A-ab transconductor |
| 03/25/2004 | WO2002054583A3 Rf power amplifier with distributed bias circuit |