| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 11/08/2007 | WO2006108068A3 Power efficient amplifier |
| 11/08/2007 | US20070259631 Radio Transmitter and a Method of Operating a Radio Transmitter |
| 11/08/2007 | US20070257762 Riaa correction of audio signal with use of transformer |
| 11/07/2007 | EP1852971A1 RF power amplifiers |
| 11/07/2007 | EP1852970A1 Amplifier unit and method of detecting failure in the same |
| 11/07/2007 | EP1851852A2 Power control circuit for accurate control of power amplifier output power |
| 11/07/2007 | EP1851850A1 Non-linear processing of signals |
| 11/07/2007 | EP1673858A4 Stacked rf power amplifier |
| 11/07/2007 | EP1597821B1 High efficiency amplification |
| 11/07/2007 | CN200973071Y Audio power amplifier circuit |
| 11/07/2007 | CN200973070Y Anti-interference high sensitivity high articulation audio detector |
| 11/07/2007 | CN200973069Y Feed forward power amplifier circuit and pick-up device of its adjacent power |
| 11/07/2007 | CN101069342A Method and system for determining the amplitude and/or phase of the output signal of a transmission link as a function of the amplitude of the input signal |
| 11/07/2007 | CN101068105A Amplifier unit and method of detecting failure in the same |
| 11/07/2007 | CN100347982C Method and apparatus for generating crc for messages having n blocks of data |
| 11/07/2007 | CN100347952C Amplitude modulation o phase modulation cancellation method in an RF amplifier |
| 11/07/2007 | CN100347951C 放大器电路 Amplifier circuit |
| 11/06/2007 | US7292829 Power amplifier efficiency |
| 11/06/2007 | US7292105 Power control and modulation of switched-mode power amplifiers with one or more stages |
| 11/06/2007 | US7292099 Amplifier arrangement and method for operation of an amplifier arrangement |
| 11/06/2007 | US7292097 Amplifier and method for processing signals |
| 11/06/2007 | US7292096 Amplifier |
| 11/06/2007 | US7292095 Notch filter for ripple reduction in chopper stabilized amplifiers |
| 11/06/2007 | US7292094 Gain control amplifier |
| 11/01/2007 | WO2007123449A1 Output networks in combination with linc technique |
| 11/01/2007 | WO2007123040A1 Power amplifier |
| 11/01/2007 | WO2007122771A1 Automatic gain controlled circuit and low noise amplifier circuit |
| 11/01/2007 | WO2007122457A2 Adaptive pre-distortion |
| 11/01/2007 | WO2007004673A1 Fet bias circuit |
| 11/01/2007 | US20070253573 Hearing instrument with source separation and corresponding method |
| 11/01/2007 | US20070253567 High frequency compensating |
| 11/01/2007 | US20070252650 Semiconductor amplifier |
| 11/01/2007 | CA2648289A1 Output networks in combination with linc technique |
| 10/31/2007 | EP1850474A1 Method and system for amplifier thermal management |
| 10/31/2007 | EP1850473A1 Method for performing linearization and image-suppression in a transmitter chain comprising a single feedback-path |
| 10/31/2007 | EP1850472A1 High-frequency circuit |
| 10/31/2007 | EP1468487B1 A high performance bifet low noise amplifier |
| 10/31/2007 | CN200968938Y Electrical source of electron gun for reflected high energy electron diffraction instrument |
| 10/31/2007 | CN101065897A Intelligent RF power control for wireless modem devices |
| 10/31/2007 | CN101065896A Amplifier circuit |
| 10/31/2007 | CN101064519A Transmission circuit, and communication apparatus using the same |
| 10/31/2007 | CN101064495A Amplifier |
| 10/30/2007 | US7289939 Mechanism for on-line prediction of future performance measurements in a computer system |
| 10/30/2007 | US7289773 Digital transmitter system employing self-generating predistortion parameter lists and adaptive controller |
| 10/30/2007 | US7289575 Signal processing means |
| 10/30/2007 | US7289286 TMR/GMR amplifier with input current compensation |
| 10/30/2007 | US7289055 Analog-digital converter with gain adjustment for high-speed operation |
| 10/30/2007 | US7288992 Bias circuit for a bipolar transistor |
| 10/30/2007 | US7288989 Low-noise amplifier with a transformer |
| 10/30/2007 | US7288988 Adaptive predistortion linearized amplifier system employing selective sampling |
| 10/30/2007 | US7288987 RF amplifier employing active load linearization |
| 10/25/2007 | WO2007121112A2 Systems, methods and devices for dual closed loop modulation controller for nonlinear rf amplifier |
| 10/25/2007 | WO2007119362A1 Audio circuit |
| 10/25/2007 | WO2007119266A1 High frequency/high output amplifier |
| 10/25/2007 | WO2007119208A2 Doherty amplifier |
| 10/25/2007 | US20070247229 Apparatus, amplifier, system and method for receiver equalization |
| 10/25/2007 | US20070247228 Apparatus for receiver equalization |
| 10/25/2007 | US20070247226 Circuit for correcting signal distortions |
| 10/25/2007 | US20070247225 Switching circuit of power converter having voltage-clipping device to improve efficiency |
| 10/25/2007 | US20070247223 Class-D amplifier |
| 10/25/2007 | US20070247218 DC offset cancellation apparatus |
| 10/25/2007 | DE102007017584A1 Signal amplifying circuit for e.g. automobile, has two limiting devices, of which one device removes dropping current from output terminal of amplifying circuit, when output voltage of amplifying circuit exceeds one of reference voltages |
| 10/24/2007 | EP1848108A2 Distortion compensating apparatus and method |
| 10/24/2007 | EP1848107A2 DC-bias network for a distributed amplifier |
| 10/24/2007 | EP1848106A2 Power amplifying apparatus using asymmetric power drive |
| 10/24/2007 | EP1847103A2 Coherent interleaved sampling |
| 10/24/2007 | EP1847016A1 Receiver having a gain-controllable input stage |
| 10/24/2007 | EP1847013A2 Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method |
| 10/24/2007 | EP0921635B1 Power amplifier device |
| 10/24/2007 | CN200966034Y Weak DC signal preamplifier circuit |
| 10/24/2007 | CN200966032Y Weak AC signal preamplifier circuit |
| 10/24/2007 | CN200966031Y Bypass circuit for tower top amplifier |
| 10/24/2007 | CN101061633A Model based distortion reduction for power amplifiers |
| 10/24/2007 | CN101061632A A method of controlling a linear power amplifier |
| 10/24/2007 | CN101061473A Low-complexity nonlinear filters |
| 10/24/2007 | CN101060309A Signal processing circuit and signal processing method |
| 10/24/2007 | CN101060308A Temperature compensation of small signal gain for an amplifier stage |
| 10/24/2007 | CN101060186A Amplifying device and radio communication circuit |
| 10/24/2007 | CN100345442C Automatically setting an operative state of a wideband amplifier |
| 10/23/2007 | US7286016 Amplifier bias circuit, method for biasing an amplifier and integrated circuit comprising an amplifier bias circuit |
| 10/23/2007 | US7286013 Coupled-inductance differential amplifier |
| 10/23/2007 | US7286011 Operational amplifier circuit having adjustable bias current |
| 10/23/2007 | US7286008 Digital amplifier |
| 10/18/2007 | WO2007117248A1 Active splitter device and method using diplexed front end |
| 10/18/2007 | WO2007117189A1 A method for compensating signal distortions in composite amplifiers |
| 10/18/2007 | WO2007117187A1 A method and apparatus for reducing frequency memory effects in rf power amplifiers |
| 10/18/2007 | WO2007091134A3 Method and system for transmitter envelope delay calibration |
| 10/18/2007 | US20070241816 Signal extraction circuit and distortion-compensated amplifier incorporating the same |
| 10/18/2007 | US20070241815 Linearizer |
| 10/18/2007 | US20070241812 High efficiency linearization power amplifier for wireless communication |
| 10/18/2007 | DE102006017515B3 Predistorter for use with power amplifier for pre-distorting input signal, has transmission units provided to reproduce nonlinear transmission characteristic of follower by using linear approximation |
| 10/18/2007 | DE102006015983A1 Amplifier for use in integrated circuit arrangement, has current path running between power supplies, complementary pre-coupled transistor pairs formed as metal oxide semiconductor FET, and circuit nodes connected with one of power supplies |
| 10/18/2007 | CA2637228A1 A method and apparatus for reducing frequency memory effects in rf power amplifiers |
| 10/17/2007 | EP1845624A1 Transmission device and wireless communication apparatus |
| 10/17/2007 | EP1845600A2 Amplification apparatus |
| 10/17/2007 | EP1844545A1 Synchronized temperature protection for class-ab amplifiers |
| 10/17/2007 | EP1730842A4 Digital linearizing system |
| 10/17/2007 | CN200962580Y Self-surge audio amplifier |
| 10/17/2007 | CN200962579Y D power amplifier circuit capable of improving the power restrain ratio |
| 10/17/2007 | CN101057437A System and method for forward path gain control in a digital predistortion linearized transmitter |