| 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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| 01/04/2001 | WO2001001565A1 Method and apparatus for linearizing an amplifier |
| 01/04/2001 | WO2001001511A1 Delay line filter |
| 01/04/2001 | DE19927952A1 Vorrichtung und Verfahren zum Vorverzerren eines über eine nicht-lineare Übertragungsstrecke zu übertragenden Übertragungssignals Apparatus and method for predistorting a through a non-linear transmission path to be transmitted transmission signal |
| 01/04/2001 | CA2378011A1 Method and apparatus for linearizing an amplifier |
| 01/03/2001 | EP1065856A2 Baseband predistortion system for linearising power amplifiers. |
| 01/03/2001 | EP1065809A1 Adaptive array sensor and electrical circuit therefore |
| 01/03/2001 | EP1064735A1 Switchable path power amplifiers |
| 01/03/2001 | EP1064721A1 Dc isolated audio power amplifier |
| 01/02/2001 | US6169885 Radio devices including power amplifier control circuits with hardware lockouts |
| 01/02/2001 | US6169800 Integrated circuit amplifier and method of adaptive offset |
| 01/02/2001 | US6169455 Power amplifying circuit and automatic power control method |
| 01/02/2001 | US6169451 System for sensing operating state of tower top amplifier for mobile communication system and method of sensing the same |
| 01/02/2001 | US6169450 Feed forward compensation using phase and time modulation |
| 01/02/2001 | US6169449 Transmission power control circuit capable of varying electric power over a wide range |
| 01/02/2001 | US6169428 Single supply voltage to frequency converter optimized for low voltage sensing above and below ground |
| 12/28/2000 | WO2000079746A1 Companion nyquist filter and linear equalizer within a data transmission system |
| 12/28/2000 | WO2000079680A1 Amplifier with improved, high precision, high speed and low power consumption architecture |
| 12/28/2000 | WO2000079679A1 Device and method for predistorting a transmission signal to be transmitted via a nonlinear transmission path |
| 12/27/2000 | EP1063825A2 Predistortion system for linearising power amplifiers |
| 12/27/2000 | EP1063769A2 Transconductance amplifier with wideband noise filtering |
| 12/27/2000 | EP1062523A2 Power supply circuit |
| 12/27/2000 | CN1278374A Adaptation method and amplifier arrangement |
| 12/27/2000 | CN1278373A Control method and control arrangement |
| 12/26/2000 | US6167242 Offset voltage cancellation system for radio frequency power controllers |
| 12/26/2000 | US6166605 Integrated audio amplifier |
| 12/26/2000 | US6166604 Semiconductor amplifier with compensated passing gain characteristic and passing phase characteristic |
| 12/26/2000 | US6166603 Class-ab output stages with improved distortion performance |
| 12/26/2000 | US6166601 Super-linear multi-carrier power amplifier |
| 12/26/2000 | US6166600 Automatic gain and phase controlled feedforward amplifier without pilot signal |
| 12/26/2000 | US6166599 Impedance matching networks for non-linear circuits |
| 12/26/2000 | US6166598 Power amplifying circuit with supply adjust to control adjacent and alternate channel power |
| 12/26/2000 | US6166596 High efficiency power amplifying apparatus with phase compensation circuit |
| 12/26/2000 | US6166595 Linearization technique for analog to digital converters |
| 12/26/2000 | US6166587 CMOS circuit for generating a current reference, the circuit comprising a transistor in a weak inversion region |
| 12/21/2000 | WO2000078013A1 Loop driver for pots, xdsl, or integrated pots/xdsl interface |
| 12/21/2000 | WO2000077931A1 Amplifier |
| 12/21/2000 | WO2000077923A1 Transistor amplifier having reduced parasitic oscillations |
| 12/21/2000 | DE10000224A1 Schutzschaltung für einen Leistungsverstärker Protection circuit for a power amplifier |
| 12/21/2000 | CA2376755A1 Amplifier |
| 12/20/2000 | EP1061644A1 Amplifier for distribution in a network |
| 12/20/2000 | EP1061642A2 Adaptive digital pre-correction of nonlinearities introduced by power amplifiers |
| 12/20/2000 | EP1061427A1 Controlled current, voltage mode driving stage |
| 12/20/2000 | EP1060574A2 A differential line driver |
| 12/20/2000 | EP1060563A1 Method and apparatus for compensating for delays in modulator loops |
| 12/19/2000 | US6163235 Active load circuit with low impedance output |
| 12/19/2000 | US6163221 High-frequency amplification device |
| 12/19/2000 | US6163219 Amplification circuit and integrated circuit having such and controlling method of the amplification circuit |
| 12/19/2000 | US6163217 Operational amplifier |
| 12/19/2000 | US6163213 Amplifier and a method of power amplification |
| 12/19/2000 | US6163212 Power amplifier system |
| 12/19/2000 | US6163211 Cascode amplifier with positive feedback for high frequency performance and method for operating and optimizing such amplifier |
| 12/19/2000 | US6163210 Feed-forward amplifier with improved linearity upon initial activation |
| 12/19/2000 | US6163206 Semiconductor integrated circuit device having recovery accelerator for changing bias circuit from standby mode without malfunction |
| 12/17/2000 | CA2311878A1 Baseband predistortion system for linearising power amplifiers |
| 12/17/2000 | CA2311833A1 Mixed baseband-if predistortion system for linearising power amplifiers |
| 12/14/2000 | WO2000076063A1 Power amplifier driver system for wireless handset |
| 12/13/2000 | EP1059728A2 Integrated on-board automated alignment for a low distortion amplifier |
| 12/13/2000 | EP1059727A2 A linearized channel amplifier |
| 12/13/2000 | EP1059666A1 Monolithic semiconductor integrated circuit device |
| 12/13/2000 | EP1058969A1 Receiver input circuit |
| 12/13/2000 | EP1058963A1 Amplifier with adjustable bias current |
| 12/13/2000 | CN1276929A Linearization method and amplifier arrangement |
| 12/12/2000 | USRE36987 Compensating for non-linear effects in signal processing with active devices |
| 12/12/2000 | US6160996 Method for adaptively controlling amplifier linearization devices |
| 12/12/2000 | US6160455 Derived power supply for composite bridge amplifiers |
| 12/12/2000 | US6160450 Self-biased, phantom-powered and feedback-stabilized amplifier for electret microphone |
| 12/12/2000 | US6160449 Power amplifying circuit with load adjust for control of adjacent and alternate channel power |
| 12/12/2000 | US6160447 Amplifier having redundancies |
| 12/10/2000 | CA2274171A1 Loop driver for pots, xdsl, or integrated pots/xdsl interface |
| 12/07/2000 | WO2000074265A1 Communication device and communication method |
| 12/07/2000 | WO2000074232A1 Predistortion type distortion compensation amplifier |
| 12/07/2000 | DE10000486A1 Polarization voltage supply for multiple stage power amplifier for use in mobile telephones, has first and second polarization supplies for specific transistor in amplifier first and second stages, respectively |
| 12/07/2000 | DE10000319A1 High-frequency power amplifier for double-band system for use in mobile telephones, has two power amplifiers and associated polarization switching circuitry |
| 12/06/2000 | EP1058384A2 Circuit for dual band tuning |
| 12/06/2000 | CN2409712Y Isolated amplifier |
| 12/06/2000 | CN1275838A Gain control circuit, receiver and transmitter, radio communication device and system |
| 12/06/2000 | CN1059302C Apparatus for driving mechanical resonator from high impedance source |
| 12/05/2000 | US6157335 Voltage generating circuit |
| 12/05/2000 | US6157256 System for high bandwidth signal amplification |
| 12/05/2000 | US6157254 Double side band pilot technique for a control system that reduces distortion produced by electrical circuits |
| 12/05/2000 | US6157253 High efficiency power amplifier circuit with wide dynamic backoff range |
| 12/05/2000 | US6157022 Bias voltage control circuitry for avalanche photodiode taking account of temperature slope of breakdown voltage of the diode, and method of adjusting the same |
| 12/03/2000 | CA2310508A1 Circuit for dual band tuning |
| 11/30/2000 | WO2000072440A1 Amplifier circuit |
| 11/30/2000 | WO2000072439A1 Amplifier circuit |
| 11/30/2000 | WO2000072438A1 Linearisation and modulation device |
| 11/30/2000 | DE19924107A1 Transistorverstärker Transistor amplifier |
| 11/30/2000 | CA2371595A1 Amplifier circuit |
| 11/30/2000 | CA2371593A1 Amplifier circuit |
| 11/29/2000 | EP1056197A2 Gain Control Circuit |
| 11/29/2000 | EP1056195A2 A multiple differential pair transistor architecture having transconductance proportional to bias current for any transitor technology |
| 11/29/2000 | EP1056194A1 Transistor amplifier |
| 11/29/2000 | EP1055284A1 Circuit comprising means for reducing the dc-offset and the noise produced by an amplifier |
| 11/29/2000 | CN1274989A Bias circuit and method for multistage power amplifier |
| 11/29/2000 | CN1274988A Isolating high-frequency tuned amplifier |
| 11/28/2000 | US6154550 Method and arrangement for automatically limiting distortion in audio devices |
| 11/28/2000 | US6154094 High power output stage with temperature stable precisely controlled quiescent current and inherent short circuit protection |
| 11/28/2000 | US6154093 Fast adaptive wideband power amplifier feed forward linearizer using a RLS parameter tracking algorithm |
| 11/28/2000 | US6154092 Circuits for preventing unwanted output transients in amplifiers during power-up |
| 11/28/2000 | US6154017 Temperature/voltage compensation circuit |