| 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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| 10/06/2005 | WO2005046049A3 Mmic distributed amplifier gate control using active bias |
| 10/06/2005 | US20050220241 Mean power frequency discriminator, frequency phase locked loop circuit and digital television demodulator using the same |
| 10/06/2005 | US20050219089 Digital linearizing system |
| 10/06/2005 | US20050219031 Method for RIAA correction of audio signal with use of transformer |
| 10/06/2005 | US20050218995 Circuit for increasing the unity gain crossover frequency of an amplifier element |
| 10/06/2005 | US20050218993 Fast-response current limiting |
| 10/06/2005 | US20050218992 Optimizing power consumption in amplifiers |
| 10/06/2005 | US20050218991 Bias circuit for a bipolar transistor |
| 10/06/2005 | US20050218990 Power amplifier |
| 10/06/2005 | US20050218989 High-frequency power amplifier circuit and electronic part for communication |
| 10/06/2005 | US20050218987 Power amplifier |
| 10/06/2005 | US20050218985 Fully differential amplifier with start up circuit |
| 10/06/2005 | US20050218980 Differential stage voltage offset trim circuitry |
| 10/06/2005 | US20050218979 Feed-forward power amplifier |
| 10/06/2005 | US20050218975 Driving apparatus in a liquid crystal display |
| 10/06/2005 | US20050218968 Reference voltage source circuit operating with low voltage |
| 10/06/2005 | US20050218938 Comparator circuit |
| 10/06/2005 | US20050217293 Circuit for controlling a cooling device |
| 10/05/2005 | EP1583243A2 Linearity compensation by harmonic cancellation |
| 10/05/2005 | EP1583231A1 Low voltage transconductance amplifier/filters |
| 10/05/2005 | EP1583230A1 Circuit for controlling a cooling device |
| 10/05/2005 | EP1583229A1 Circuit for controlling a cooling device |
| 10/05/2005 | EP1583228A2 Composite power amplifier |
| 10/05/2005 | EP1583227A1 Doherty amplifier |
| 10/05/2005 | EP1581994A2 Power amplifier circuit and method using bandlimited signal component estimates |
| 10/05/2005 | CN1679315A Communication arrangement and transmission unit for information transfer by means of at least one transmission line and a circuit arrangement for connection to the transmission unit |
| 10/05/2005 | CN1679232A Enhanced efficiency LDMOS based feed forward amplifier |
| 10/05/2005 | CN1677968A Mean power frequency discriminator, frequency phase locked loop circuit and digital television demodulator using the same |
| 10/05/2005 | CN1677870A Linearity compensation by harmonic cancellation |
| 10/05/2005 | CN1677847A Circuit for increasing the unity gain crossover frequency of an amplifier element |
| 10/05/2005 | CN1677472A Driving apparatus in a liquid crystal display |
| 10/05/2005 | CN1677300A Switching regulator control circuit, switching regulator and switching regulator control method |
| 10/05/2005 | CN1677020A Circuit for controlling a cooling device |
| 10/04/2005 | US6952144 Apparatus and method to provide power amplification |
| 10/04/2005 | US6952136 System to reduce unwanted oscillations in high speed, high gain or transimpedance amplifiers |
| 10/04/2005 | US6952135 Method and apparatus for controlling an amplifier |
| 09/29/2005 | WO2005091498A1 Signal switch circuit |
| 09/29/2005 | WO2005091496A1 Fet amplifier, pulse modulation module, and radar device |
| 09/29/2005 | WO2005091494A1 Method and apparatus for feed forward linearization of wideband rf amplifiers |
| 09/29/2005 | US20050215220 Amplifiers and amplifying methods for use in telecommunications devices |
| 09/29/2005 | US20050215209 Transmitter |
| 09/29/2005 | US20050215199 Signal output apparatus equipped with a distortion canceller and a data transmission device using the apparatus |
| 09/29/2005 | US20050213685 Distortion compensator |
| 09/29/2005 | US20050212606 Wireless communications device having type-II all-digital phase-locked loop (PLL) |
| 09/29/2005 | US20050212604 Programmable radio transceiver |
| 09/29/2005 | US20050212603 Electronic circuit |
| 09/29/2005 | US20050212602 Method and apparatus for doherty amplifier biasing |
| 09/29/2005 | US20050212601 Power amplifiers |
| 09/29/2005 | US20050212596 Model based distortion reduction for power amplifiers |
| 09/29/2005 | US20050212595 Distortion compensating device and power amplifying device with distortion compensating function |
| 09/29/2005 | US20050212594 Power amplifier with pre-distorter |
| 09/29/2005 | US20050212593 Semiconductor circuit |
| 09/29/2005 | US20050212592 Switching amplifier |
| 09/29/2005 | US20050212589 Low-complexity nonlinear filters |
| 09/29/2005 | US20050212588 Constant current circuit |
| 09/29/2005 | US20050212585 System and method for biasing electrical circuits |
| 09/29/2005 | US20050212564 An improved receiver having full signal path differential offset cancellation capabilities |
| 09/29/2005 | US20050212499 Switching regulator control circuit, switching regulator and switching regulator control method |
| 09/29/2005 | DE4020105B4 Einrichtung zur Verringerung des Rauschens bei einer Potentiometerauswertung Means for reducing the noise at a potentiometer measurement |
| 09/29/2005 | DE102004047957A1 Verstärker-Vorverzerrung mittels Verbund-Aufsuchtabellen Amplifier predistortion using composite-look-up |
| 09/28/2005 | EP1580881A2 High-frequency power amplifier and communication apparatus |
| 09/28/2005 | EP1580880A1 Disturbance protection for a telecommunications device |
| 09/28/2005 | EP1580759A1 Device for generating write current in an MRAM and memory containing said device |
| 09/28/2005 | EP1579573A2 Apparatus and method for safely handling asynchronous shutdown of pulsewidth modulated output |
| 09/28/2005 | EP1579572A1 Peak power limitation in an amplifier pooling scenario |
| 09/28/2005 | EP1579571A2 Phase corrected miller compensation of chopper and nested chopper amplifiers |
| 09/28/2005 | EP1579569A1 Power amplifier with bias control |
| 09/28/2005 | EP1579568A1 Precorrection of a nonlinear amplifier |
| 09/28/2005 | EP0847619B1 Circuit arrangement comprising a cartesian amplifier |
| 09/28/2005 | CN1675833A Ring triggered mute |
| 09/28/2005 | CN1675832A Variable gain amplifier with improved control characteristics linearity |
| 09/28/2005 | CN1675828A Blind linearization using cross-modulation |
| 09/28/2005 | CN1675827A A power amplifier system |
| 09/28/2005 | CN1675826A High power Doherty amplifier |
| 09/28/2005 | CN1674453A Switch apparatus, switchable power amplification apparatus, and mobile communication terminal apparatus |
| 09/28/2005 | CN1674449A 发射机 Transmitter |
| 09/28/2005 | CN1674437A 比较器电路 Comparator circuit |
| 09/28/2005 | CN1674433A Field emission RF amplifier |
| 09/28/2005 | CN1674432A Cascode circuit and communication apparatus using the same circuit |
| 09/28/2005 | CN1221072C Linearized class C amplifier with dynamic biasing |
| 09/27/2005 | US6950637 Power rate enhancement circuit for an RF power amplifier in a dual mode mobile phone |
| 09/27/2005 | US6949979 Designing methods and circuits for multi-band electronic circuits |
| 09/27/2005 | US6949978 Efficient broadband switching-mode amplifier |
| 09/27/2005 | US6949977 Circuit arrangement having a transimpedance amplifier connected to a current limiter circuit |
| 09/27/2005 | US6949976 Distortion compensating amplifier device, amplifier system, and wireless base station |
| 09/27/2005 | US6949975 Distortion detection for a power amplifier |
| 09/27/2005 | US6949974 Radio frequency power amplifier |
| 09/27/2005 | US6949973 Signal amplifier |
| 09/27/2005 | US6949968 Method for increasing the sensitivity of integrated circuit temperature sensors |
| 09/22/2005 | WO2005088842A1 Transmission device and radio communication device |
| 09/22/2005 | WO2005088831A1 Pre-distortion method, measurement arrangement, pre-distorter structure, transmitter, receiver and connecting device |
| 09/22/2005 | WO2005088830A1 A doherty amplifier |
| 09/22/2005 | WO2005088829A1 Apparatus and method for dc offset reduction |
| 09/22/2005 | WO2005086690A2 Mosfet amplifier having feedback controlled transconductance |
| 09/22/2005 | WO2005086682A2 Apparatus and method for dynamic dc offset detection and cancellation |
| 09/22/2005 | US20050210354 Transmitting method and transmitting apparatus |
| 09/22/2005 | US20050208911 Amplifier circuits and their use in radio frequency transmitters |
| 09/22/2005 | US20050208910 Variable-gain low noise amplifier for digital terrestrial applications |
| 09/22/2005 | US20050208909 High-frequency power amplifier and communication apparatus |
| 09/22/2005 | US20050208907 Detecting and maintaining linearity in a power amplifier system through envelope power comparisons |