| 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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| 07/05/2001 | WO2001048911A2 Locally-adapted parallel t-spaced linear predistorter |
| 07/05/2001 | WO2001048759A1 Double input buffer for track-and-hold amplifier |
| 07/05/2001 | US20010006354 Predistortion linearizer for power amplifier |
| 07/05/2001 | US20010006340 Circuit configuration for generating an auxiliary DC voltage |
| 07/04/2001 | EP1113574A2 Feed-foward amplifier and controller of the same |
| 07/04/2001 | EP1010238B1 Amplifier circuit |
| 07/04/2001 | CN1302476A Apparatus and method of linearizing power amplifier in mobile radio communication system |
| 07/04/2001 | CN1068159C Power amplifier with switching power supply |
| 07/03/2001 | US6256482 Power- conserving drive-modulation method for envelope-elimination-and-restoration (EER) transmitters |
| 07/03/2001 | US6255910 Active operating point adjustment for power amplifiers |
| 07/03/2001 | US6255909 Ultra low voltage CMOS class AB power amplifier with parasitic capacitance internal compensation |
| 07/03/2001 | US6255908 Temperature compensated and digitally controlled amplitude and phase channel amplifier linearizer for multi-carrier amplification systems |
| 07/03/2001 | US6255907 Power amplifier |
| 07/03/2001 | US6255906 Power amplifier operated as an envelope digital to analog converter with digital pre-distortion |
| 07/03/2001 | US6255904 Anti-pop circuit for AC amplifiers |
| 07/03/2001 | US6255903 Linear power amplifier with configurable feedforward error correction circuits |
| 07/03/2001 | US6255885 Low voltage transistor biasing |
| 07/03/2001 | US6255868 Buffer circuit and hold circuit |
| 06/28/2001 | WO2001047127A1 Method and apparatus for linear amplification of a radio frequency signal |
| 06/28/2001 | WO2001047117A1 High sheet mos resistor method and apparatus |
| 06/28/2001 | WO2001047104A1 Emitter follower with constant collector current biasing means |
| 06/28/2001 | US20010005402 Distortion compensating apparatus |
| 06/28/2001 | US20010005163 Semiconductor integrated circuit |
| 06/28/2001 | US20010005160 Reference voltage generation circuit using source followers |
| 06/28/2001 | US20010005147 Semiconductor circuit including output buffer circuit and drive circuit for driving output buffer circuit |
| 06/27/2001 | EP1111868A2 Phase and amplitude detection, particularly for use in the linearisation of power amplifiers |
| 06/27/2001 | EP1111775A1 Power stage |
| 06/27/2001 | EP1111774A1 Method and apparatus for biasing radio frequency power transistors |
| 06/27/2001 | EP1110319A1 Dc output level compensation circuit |
| 06/27/2001 | EP1110311A1 A muting circuit having controllable impedance means for soft muting |
| 06/27/2001 | EP1110306A1 Methods for adjusting audio signals responsive to changes in a power supply level and related communications devices |
| 06/27/2001 | EP1110305A1 Apparatus and method of achieving and improving linearity of amplifiers and other non-linear paths |
| 06/27/2001 | EP0767989B1 Offset-compensated linear rf detector |
| 06/26/2001 | US6253070 Diode amplifier bypass circuit |
| 06/26/2001 | US6252912 Adaptive predistortion system |
| 06/26/2001 | US6252463 High-frequency switch, adjustable high-frequency switch, and adjustable high-frequency power amplifier |
| 06/26/2001 | US6252461 Technique for wideband operation of power amplifiers |
| 06/26/2001 | US6252455 Method and apparatus for efficient signal amplification |
| 06/26/2001 | US6252454 Calibrated quasi-autozeroed comparator systems and methods |
| 06/26/2001 | US6252395 Temperature-compensating amplification circuit and a position detecting apparatus using such amplification circuit |
| 06/22/2001 | CA2327887A1 Method and apparatus for reducing transistor amplifier hysteresis |
| 06/21/2001 | WO2001045336A1 An arrangement for reducing power dissipation in a line driver |
| 06/21/2001 | WO2001045286A1 Transmitter image suppression in tdd transceivers |
| 06/21/2001 | WO2001045279A1 Linearisation method and signal processing device |
| 06/21/2001 | US20010004387 Arrangement for reducing power dissipation in a line driver |
| 06/21/2001 | US20010004223 Adaptive predistortion linearizer |
| 06/21/2001 | CA2329100A1 Phase and amplitude detector and method of determining errors |
| 06/20/2001 | EP1108284A1 Error correction in amplifiers |
| 06/20/2001 | EP1108279A1 High vswr mismatch output stage |
| 06/20/2001 | CN1300132A Effective multi-mode power amplifier |
| 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 | US6249183 High-efficiency amplifying device |
| 06/19/2001 | US6249175 Self-biasing circuit |
| 06/14/2001 | WO2001043280A1 Power amplifier core |
| 06/14/2001 | WO2001043279A1 Method and apparatus for cascaded ground return amplifier |
| 06/14/2001 | WO2001043277A1 System and method for auto-bias of an amplifier |
| 06/14/2001 | WO2001043276A1 Audio amplifier with tracking power supply utilizing inductive power converters |
| 06/14/2001 | WO2001041528A2 Second order predistortor for a return laser transmitter |
| 06/14/2001 | WO2001031708A8 Circuit for protection of differential amplifier inputs against electrostatic discharge |
| 06/14/2001 | US20010003434 Power amplifier system having amplifier failure compensation |
| 06/14/2001 | US20010003433 Power amplifier system having frequency and amplifier failure compensation |
| 06/14/2001 | CA2382965A1 Second order predistortor for a return laser transmitter |
| 06/13/2001 | EP1107451A2 Transmission path switching circuit |
| 06/13/2001 | EP1107450A1 Amplifier with distortion compensation |
| 06/13/2001 | EP1107449A2 Non-linear distortion compensation circuit, transmitter device to be employed in the same and mobile communication unit |
| 06/13/2001 | EP0733281B1 Amplifier arrangement |
| 06/13/2001 | DE19951942A1 Power amplifier with overdriving protection damps higher input signal amplitudes more than lower signal amplitudes if supply voltage reduces below defined threshold value |
| 06/13/2001 | CN1299532A Linearization method for amplifier, and amplifier arrangement |
| 06/13/2001 | CN1299531A Amplifier with adjustable bias current |
| 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 | US6246353 Integrated-circuit structures and methods for correction of temperature and process-induced parameter errors |
| 06/12/2001 | US6246290 High gain, current driven, high frequency amplifier |
| 06/12/2001 | US6246288 Operational amplifier |
| 06/12/2001 | US6246287 Amplifier for piezoelectric acceleration sensor |
| 06/12/2001 | US6246286 Adaptive linearization of power amplifiers |
| 06/12/2001 | US6246283 Power efficient line driver |
| 06/12/2001 | US6246282 First stage amplifier circuit |
| 06/12/2001 | US6246262 Output buffer for a low voltage differential signaling receiver |
| 06/07/2001 | WO2001041302A1 Amplifier |
| 06/07/2001 | WO2001041300A1 Power amplifier and a method for operating a power amplifier |
| 06/07/2001 | WO2001041299A1 Method and apparatus for improved feed forward amplification |
| 06/07/2001 | WO2001041298A2 Control scheme for distortion reduction |
| 06/07/2001 | WO2001041297A2 Distortion reduction |
| 06/07/2001 | US20010003166 Noise elimination in a USB codec |
| 06/07/2001 | US20010002803 Distributed amplifier with improved flatness of frequency characteristic |
| 06/07/2001 | US20010002801 Power drive circuit |
| 06/07/2001 | DE10001124C1 Circuit for reducing 1/f noise in MOSFETs enables continuous operation of transistors without changing between operating and rest states - has periodic current and/or voltage source(s) associated with MOSFET(s) so working point oscillates about constant working point to reduce 1/f noise |
| 06/06/2001 | CN2433775Y 音频功率放大器 Audio Power Amplifier |
| 06/06/2001 | CN1298570A Feed forward amplifier |
| 06/06/2001 | CN1298236A Nonlinear distortion compensation circuit, transmitting apparatus and mobile communication equipment |
| 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 | US6242979 Linearization using parallel cancellation in linear power amplifier |
| 06/05/2001 | US6242978 Method and apparatus for linearizing an amplifier |
| 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 |