| 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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| 05/02/2001 | EP1095446A1 Digital phase modulator using non-linear amplifiers and a ring oscillator |
| 05/02/2001 | CN2428915Y Amplifier without power-supply noise |
| 05/02/2001 | CN1293493A Autogain control circuit and receiver having said circuit |
| 05/02/2001 | CA2323982A1 Rf amplifier having a dual slope phase modulator |
| 05/01/2001 | US6225867 Protection scheme for multi-transistor amplifiers |
| 05/01/2001 | US6225866 Series connected multi-stage linear FET amplifier circuit |
| 05/01/2001 | US6225864 RF amplifier having a dual slope phase modulator |
| 05/01/2001 | US6225855 Reference voltage generation circuit using source followers |
| 05/01/2001 | US6225848 Method and apparatus for settling and maintaining a DC offset |
| 05/01/2001 | US6225839 Buffer circuit |
| 05/01/2001 | CA2258604C Predistortion for a non-linear channel in the high-frequency region |
| 04/26/2001 | WO2001029963A1 Adaptive digital predistortion for amplifier linearization |
| 04/26/2001 | WO2001029962A1 Wideband vector feedback apparatus |
| 04/26/2001 | WO2001029633A1 Electronic circuit |
| 04/26/2001 | DE19946459A1 Low-noise wideband amplifier for ultrasound apparatus, magnetic resonance equipment or high frequency measuring device has controlled current source in negative feedback loop |
| 04/26/2001 | DE19945709A1 Schaltungsanordnung zur Regelung des Arbeitspunkts eines Leistungsverstärkers Circuitry for controlling the operating point of a power amplifier |
| 04/25/2001 | EP1094599A1 A circuit for compensating for the difference between the Vgs voltages of two MOS transistors |
| 04/25/2001 | EP1094598A2 Frequency compensation of an amplifier |
| 04/24/2001 | US6223056 Systems and methods for dynamically controlling a variable power amplifier |
| 04/24/2001 | US6222418 Feed-forward compensation scheme for feedback circuits |
| 04/24/2001 | US6222417 Amplifier output stage provided with a parasitic-current limiter |
| 04/24/2001 | US6222412 Circuit for controlling waveform distortion at a control terminal of a radio frequency transistor |
| 04/24/2001 | CA2261858C High speed process-controlled transresistance amplifier |
| 04/19/2001 | WO2001028094A1 Open loop supply independent digital/logic delay circuit and method |
| 04/19/2001 | WO2001028086A1 Compensation circuit and method for a power transistor |
| 04/19/2001 | WO2000070751A8 Broadcast transmission system with correction for distortion |
| 04/19/2001 | US20010000297 Biquad notch filter |
| 04/18/2001 | EP1093222A1 Transmitter and receiver |
| 04/18/2001 | EP1093220A1 Method of anomalous offset detection and circuit |
| 04/18/2001 | EP1092274A1 A predistorter |
| 04/18/2001 | EP1092265A1 Amplification using amplitude reconstruction of amplitude and/or angle modulated carrier |
| 04/18/2001 | CN1292168A Method in compensation of unlinearities in amplifier, amplifier, and uses of method and amplifier |
| 04/17/2001 | US6219310 Optical read/write apparatus |
| 04/17/2001 | US6218906 Amplifier circuit |
| 04/17/2001 | US6218904 Biasing scheme for GAASFET amplifier |
| 04/17/2001 | US6218900 Operational amplifier phase reversal protection |
| 04/17/2001 | US6218897 Reconfigurable linear power amplifier |
| 04/17/2001 | US6218886 Device for compensating process and operating parameter variations in CMOS integrated circuits |
| 04/17/2001 | US6218883 Semiconductor integrated circuit for electric microphone |
| 04/12/2001 | WO2001026416A2 High performance audio transmission channel |
| 04/12/2001 | WO2001026222A1 Dynamic closed-loop audio amplifier system |
| 04/12/2001 | WO2001026217A1 High-frequency power amplifier |
| 04/12/2001 | WO2001026216A1 Amplifier |
| 04/12/2001 | WO2000048307A8 High-efficiency modulating rf amplifier |
| 04/12/2001 | DE19947808A1 Amplifier circuit has two bridge end stages for operating loudspeaker with two oscillating coils; coils are driven by end stages depending on power level delivered to loudspeaker |
| 04/12/2001 | DE19943957C1 Verfahren zur Linearisierung eines Hochfrequenz-Verstärkers A method for linearising a radio frequency amplifier |
| 04/12/2001 | DE10035060A1 Leistungsverstärkungsschaltung mit Lasteinstellung zur Steuerung der Leistung des benachbarten Kanals und des übernächsten Kanals Power amplifier circuit with load setting to control the power of the adjacent channel and of the next channel |
| 04/11/2001 | EP1091534A1 High efficiency transmission channel |
| 04/11/2001 | EP1091489A2 Multi-stage, low-offset, fast recovery, comparator system and method |
| 04/11/2001 | EP1091442A2 Circuit for dealing with higher harmonics and circuit for amplifying power efficiency |
| 04/11/2001 | EP1090457A1 Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 04/11/2001 | EP0974082A4 Output buffer having a predriver for compensating slew rate against process variations |
| 04/11/2001 | CN1291004A Integrated circuit device with self-bias and single plug pin radio frequency signal input |
| 04/11/2001 | CN1291000A Method for linear power amplifier on wide frequency band |
| 04/11/2001 | CN1290999A Non-linear compensator |
| 04/10/2001 | US6216100 Method for the simulation of a nonlinear amplifier with envelope memory effect |
| 04/10/2001 | US6216052 Noise elimination in a USB codec |
| 04/10/2001 | US6215986 Reducing radio transmitter distortion |
| 04/10/2001 | US6215358 Temperature compensated bias network for a power amplifier and method of operation |
| 04/10/2001 | US6215357 Operational amplifier |
| 04/10/2001 | US6215356 Power amplifier arrangement |
| 04/10/2001 | US6215354 Closed loop calibration for an amplitude reconstruction amplifier |
| 04/05/2001 | WO2001024554A1 Transmission power amplifying unit |
| 04/05/2001 | WO2001024472A1 Transmitting-receiving device comprising a closed cartesian feedback loop |
| 04/05/2001 | WO2001024467A2 Method for adjusting a phase angle of a phase modifier of a transmitting device |
| 04/05/2001 | WO2001024359A1 Broadband feedforward predistortion |
| 04/05/2001 | WO2001024356A1 Improvements relating to eer transmitters |
| 04/05/2001 | WO2001024271A1 Improved heat dissipation in an amplifier circuit by interleaved configuration of two power transistors |
| 04/05/2001 | WO2001022874A1 Methods of calibrating in vivo sensor systems using in vivo generating electrodes and related devices |
| 04/05/2001 | CA2385948A1 Improvements relating to eer transmitters |
| 04/04/2001 | EP1089430A2 A dB-linear variable gain amplifier |
| 04/04/2001 | EP1089429A2 Automatic gain control circuit and receiver having the same |
| 04/04/2001 | EP1089428A2 Nonlinear compensator |
| 04/04/2001 | EP1088393A1 Amplifier arrangement |
| 04/04/2001 | EP1088390A1 Circuit and methods for compensating for imperfections in amplification chains in a linc or other amplification system |
| 04/04/2001 | EP1025639A4 Transimpedance amplifier with automatic gain control |
| 04/04/2001 | EP1020026A4 Apparatus and method for amplifying a signal |
| 04/03/2001 | US6211738 Stability and enhanced gain of amplifiers using inductive coupling |
| 04/03/2001 | US6211737 Variable gain amplifier with improved linearity |
| 04/03/2001 | US6211734 Active distortion signal generating circuit for a line-distortion type power amplifier |
| 04/03/2001 | US6211733 Predistortion compensation for a power amplifier |
| 04/03/2001 | US6211730 Pre-amplifier circuit |
| 04/03/2001 | US6211717 Multiple differential pair transistor architecture having transconductance proportional to bias current for any transistor technology |
| 04/03/2001 | US6211706 Method and circuit for driving power transistors in a half bridge configuration allowing for excessive negative swing of the output node and integrated circuit incorporating the circuit |
| 04/03/2001 | US6211658 Balanced voltage reference circuit, integrated with one or more amplifier circuits, for operating point adjustment |
| 04/03/2001 | CA2055410C Composite bridge amplifier |
| 03/29/2001 | WO2001022604A1 Method and apparatus for wireless phone transmit power amplification with reduced power consumption |
| 03/29/2001 | WO2001022585A1 Adaptive dead time control for pushing-pull switching circuits |
| 03/29/2001 | WO2001022574A1 Feedforward multi-terminal power-synthesizing power amplifier |
| 03/29/2001 | WO2001022573A1 Circuit system for regulating the operating point of a power amplifier |
| 03/29/2001 | WO2001022572A1 Modulated radio signal transmitter with self-adapted amplification polarisation |
| 03/29/2001 | CA2384412A1 Method and apparatus for wireless phone transmit power amplification with reduced power consumption |
| 03/28/2001 | EP1087522A2 An integrated circuit device having a self-biased, single pin radio frequency signal input |
| 03/28/2001 | EP1087521A1 Methods and apparatus for adaptive adjustment of feed-forward linearized amplifiers |
| 03/28/2001 | EP1087520A2 Amplifying device |
| 03/28/2001 | EP1087441A2 Stacked mosfet protection circuit |
| 03/28/2001 | EP1087383A2 Apparatus for scanning optical recording media |
| 03/28/2001 | EP1086527A2 A method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and circuit |
| 03/28/2001 | EP1086526A2 A method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and the circuit |
| 03/28/2001 | CN1289177A Alternative-gaint and phase control system and method |