| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 06/20/2001 | CN2435878Y Single-class power amplifier |
| 06/20/2001 | CN1300465A Improved operational amplifier output stage |
| 06/19/2001 | US6249187 Monolithic CRT video power amplifier system |
| 06/19/2001 | US6249186 High-frequency power amplifier circuit and high-frequency power amplifier module |
| 06/19/2001 | US6249184 Rail-to-rail input stage |
| 06/19/2001 | US6249183 High-efficiency amplifying device |
| 06/19/2001 | US6249182 Class D amplifier with bandwidth independent of load impedance |
| 06/19/2001 | US6249181 Differential-mode charge transfer amplifier |
| 06/19/2001 | US6249178 High-speed output circuit device with a switch circuit |
| 06/19/2001 | US6249176 Ultra low voltage cascode current mirror |
| 06/19/2001 | US6249158 Circuit arrangement for generating an output signal |
| 06/19/2001 | US6249153 High slew rate input differential pair with common mode input to ground |
| 06/14/2001 | WO2001043280A1 Power amplifier core |
| 06/14/2001 | WO2001043279A1 Method and apparatus for cascaded ground return amplifier |
| 06/14/2001 | WO2001043278A1 Low distortion transimpedance amplifier using distortion cancellation technique |
| 06/14/2001 | US20010003434 Power amplifier system having amplifier failure compensation |
| 06/14/2001 | US20010003433 Power amplifier system having frequency and amplifier failure compensation |
| 06/13/2001 | CN1299187A High-fidelity final-stage power current amplifier |
| 06/13/2001 | CN1299186A System and method for producing amplifying signals |
| 06/13/2001 | CN1067194C Output stage of operational amplifier suitable for mounting on substrate and method of amplifying therewith |
| 06/12/2001 | USRE37217 Operational amplifier having stable operations for a wide range of source voltage, and current detector circuit employing a small number of elements |
| 06/12/2001 | US6246734 Vehicle communication system |
| 06/12/2001 | US6246290 High gain, current driven, high frequency amplifier |
| 06/12/2001 | US6246288 Operational amplifier |
| 06/12/2001 | US6246284 Negative feedback amplifier with automatic gain control function |
| 06/12/2001 | US6246282 First stage amplifier circuit |
| 06/12/2001 | US6246268 CMOS integrated signal detection circuit with high efficiency and performance |
| 06/12/2001 | US6246221 PMOS low drop-out voltage regulator using non-inverting variable gain stage |
| 06/12/2001 | US6246153 Positive feedback resonant transducer circuit |
| 06/12/2001 | US6246152 Driver circuit for controlling a piezoelectric actuator in charge mode |
| 06/07/2001 | WO2001041303A1 Non-linear signal processor |
| 06/07/2001 | WO2001041302A1 Amplifier |
| 06/07/2001 | WO2001041301A1 Differential amplifier |
| 06/07/2001 | WO2001041300A1 Power amplifier and a method for operating a power amplifier |
| 06/07/2001 | US20010002803 Distributed amplifier with improved flatness of frequency characteristic |
| 06/07/2001 | US20010002802 Method and circuit arrangement for signal processing |
| 06/07/2001 | US20010002801 Power drive circuit |
| 06/06/2001 | CN1298225A System and method for generating enlarged signal or its edition |
| 06/06/2001 | CN1066873C Grounded inductance circuit using gyrator circuit |
| 06/05/2001 | US6242986 Multiple-band amplifier |
| 06/05/2001 | US6242985 Composite transistor device |
| 06/05/2001 | US6242980 Differential amplifier circuit |
| 06/05/2001 | US6242977 Amplifier and preamplifier circuit |
| 06/05/2001 | US6242976 Low cost linearized channel amplifier for use with high power amplifiers |
| 06/05/2001 | US6242975 Envelope peak and trough limiting to improve amplifier efficiency and distortion characteristics |
| 05/31/2001 | WO2001039371A1 Audio boost circuit |
| 05/31/2001 | WO2001039369A1 Power booster amplifier |
| 05/31/2001 | WO2001039368A1 High voltage hybrid circuit |
| 05/31/2001 | WO2001039366A2 Circuit that operates in a manner substantially complementary to an amplifying device included therein and apparatus incorporating same |
| 05/31/2001 | WO2001039365A1 Power amplifiers |
| 05/31/2001 | US20010002114 Adaptive linearizer for RFpower amplifiers |
| 05/31/2001 | US20010002113 Circuit arrangement for adjusting the impedance of a differential active component |
| 05/31/2001 | US20010002110 Current sense amplifier and current comparator with hysteresis |
| 05/31/2001 | US20010002100 Battery polarity insensitive integrated circuit amplifier |
| 05/31/2001 | DE19953121A1 Controlling audio system involves generating pulse width modulated signal modulated by audio signal, output on data line of audio interface with bit width is halved to double sampling rate |
| 05/31/2001 | DE19953119A1 Verfahren zur Ansteuerung eines Audioverstärkers und Audioverstärker mit einer getakteten Endstufe A method of driving an audio amplifier and audio amplifier with a switched output stage |
| 05/30/2001 | EP1104108A1 Current detector circuits |
| 05/30/2001 | EP1104094A1 Class D audio amplifier using feedback |
| 05/30/2001 | EP1104092A2 Operational amplifier with digital offset calibration |
| 05/30/2001 | EP0937335B1 An arrangement for reducing and stabilizing the amplification of a darlington-coupled output stage |
| 05/30/2001 | CN2432741Y Bidirectional additional device for wired TV net |
| 05/30/2001 | CN1066593C Power combiner for use in RF system and method of using power combiner |
| 05/30/2001 | CN1066592C Base-current bias quasi-first circuit |
| 05/29/2001 | US6240191 Audio volume control circuit using pulse width modulation signal |
| 05/29/2001 | US6240144 Apparatus and method of linearizing a power amplifier in a mobile radio communication system |
| 05/29/2001 | US6239670 Short-stub matching circuit |
| 05/29/2001 | US6239656 Power amplifier |
| 05/29/2001 | US6239655 Microphone amplifier with digital gain control |
| 05/29/2001 | US6239654 Filter circuit |
| 05/29/2001 | US6239643 Offset correction circuit and DC amplification circuit |
| 05/29/2001 | CA2266540C Generalized procedure for the calibration of switched capacitor gain stages |
| 05/25/2001 | WO2001037461A1 Method and apparatus for generating an rf signal |
| 05/25/2001 | WO2001037425A1 Multi-stage amplifier circuit |
| 05/25/2001 | WO2001037422A1 Amplifier |
| 05/25/2001 | WO2001037421A2 High efficiency power amplifier |
| 05/25/2001 | CA2390097A1 Method and apparatus for generating an rf signal |
| 05/24/2001 | US20010001548 Power splitter/combiner circuit, high power amplifier and balun circuit |
| 05/24/2001 | US20010001547 Methods and apparatus for noise shaping a mixed signal power output |
| 05/23/2001 | EP1102409A1 Method and apparatus for generating a RF signal |
| 05/23/2001 | EP1102394A2 System and method for producing amplified signals |
| 05/23/2001 | EP1102393A2 System and method for producing an amplified signal |
| 05/23/2001 | EP1101280A1 A set-up method for a linearising circuit |
| 05/23/2001 | EP1101279A1 Amplifier output stage |
| 05/23/2001 | EP1101278A2 A method of attenuating zero crossing distortion and noise in an amplifier, an amplifier and uses of the method and the amplifier |
| 05/23/2001 | CN2431680Y Improved computing amplifier with zero consumed current and stable output |
| 05/23/2001 | CN1296666A Method and apparatus for compensating for delays in modulator loops |
| 05/23/2001 | CN1296663A Hybrid chireix/doherty amplifiers power waveform synthesis |
| 05/23/2001 | CN1296336A All suspension BTL audio power amplifier |
| 05/23/2001 | CN1296335A Power amplifier system |
| 05/22/2001 | US6236524 Adjustable impedance booster |
| 05/22/2001 | US6236284 RF power amplifier system having distributed modulation encoding |
| 05/22/2001 | US6236274 Second harmonic terminations for high efficiency radio frequency dual-band power amplifier |
| 05/22/2001 | US6236273 High efficiency power amplifier |
| 05/22/2001 | US6236272 Traveling wave power combiner and radio base station |
| 05/22/2001 | US6236270 Operational amplifier circuit including folded cascode circuit |
| 05/22/2001 | US6236269 Complementary CMOS differential amplifier circuit |
| 05/22/2001 | US6236268 High-gain amplifier having a limited output dynamic range |
| 05/22/2001 | US6236266 Bias circuit and bias supply method for a multistage power amplifier |
| 05/22/2001 | US6236257 Method and apparatus for reducing using feed forward compensation |
| 05/22/2001 | US6236254 Low voltage amplification circuit with bias compensation |