| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 08/07/2003 | US20030146788 Operation amplifier circuit, drive circuit and method of controlling operation amplifier circuit |
| 08/07/2003 | US20030146787 Power amplifier linearizer that compensates for long-time-constant memory effects and method therefor |
| 08/07/2003 | US20030146784 Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator |
| 08/07/2003 | CA2474975A1 Power amplification apparatus of portable terminal |
| 08/06/2003 | EP1333555A2 Circuit and method for avoiding standby discharge of a battery fed signal evaluation circuit for a sensor |
| 08/06/2003 | EP1333427A2 Circuit for reading differential data from a disk by applying a voltage bias on a read head |
| 08/06/2003 | EP1332551A1 Amplifier linearisation |
| 08/06/2003 | EP1332550A2 Linear modulation using a linear and a non-linear amplifier |
| 08/06/2003 | EP1119905B1 In-line, unbalanced amplifier, pre-distortion circuit |
| 08/06/2003 | CN2565199Y Bias-free power amplifier |
| 08/06/2003 | CN1435007A High sheet MOS resistor method and apparatus |
| 08/06/2003 | CN1434566A Preparing device and method for imput and set of predistortion comparative signal in amplifier |
| 08/06/2003 | CN1117428C Method in compensation of unlinearities in amplifier, amplifier, and uses of method and amplifier |
| 08/05/2003 | US6603359 High-frequency power amplifying apparatus |
| 08/05/2003 | US6603356 Method and circuit for controlling quiescent current of amplifier |
| 08/05/2003 | US6603354 Method and apparatus to generate an optimum common-mode voltage in analog differential circuits |
| 08/05/2003 | US6603353 Switching power amplifier |
| 08/05/2003 | US6603351 Power amplifier with gain change compensation |
| 08/05/2003 | US6603347 Amplifier having controllable input impedance |
| 08/05/2003 | US6603343 Phase correction circuit for transistor using high-frequency signal |
| 08/05/2003 | US6603293 Power supply rejection ratio optimization during test |
| 08/05/2003 | US6603110 Temperature compensating circuit, temperature compensating logarithm conversion circuit and light receiver |
| 08/05/2003 | CA2268421C Audio direct from power supply |
| 07/31/2003 | WO2003063342A1 Method and circuit for controlling power amplifiers |
| 07/31/2003 | WO2003063341A1 Dual feedback linear amplifier |
| 07/31/2003 | WO2003063339A2 A high performance bifet low noise amplifier |
| 07/31/2003 | WO2003063338A2 Direct conversion of low power high linearity receiver |
| 07/31/2003 | WO2003063246A2 Rf amplifier |
| 07/31/2003 | US20030142834 Headphone amplifier |
| 07/31/2003 | US20030142816 Broadband driver circuit |
| 07/31/2003 | US20030142088 Method and system for precharging OLED/PLED displays with a precharge latency |
| 07/31/2003 | US20030141953 Monolithic transformer compensated circuit |
| 07/31/2003 | US20030141934 Power supply rejection circuit for an audio amplifier |
| 07/31/2003 | US20030141933 N-way RF power amplifier with increased backoff power and power added efficiency |
| 07/31/2003 | US20030141931 FET amplifier with temperature-compensating circuit |
| 07/31/2003 | US20030141930 Output stage with stable quiescent current |
| 07/31/2003 | US20030141928 Power amplifier clipping circuit for minimizing output distortion |
| 07/30/2003 | EP1331729A1 A predistortion compensated linear amplifier |
| 07/30/2003 | EP1330871A2 Multiple-voltage supply power amplifier with dynamic headroom control |
| 07/30/2003 | EP1330870A1 Method and apparatus for controlling an amplifier |
| 07/30/2003 | EP1188234B1 Circuit array for adapting an amplifier to a high frequency line and utilization of said circuit array |
| 07/30/2003 | CN2563833Y Sound frequency power amplifier of variable output resistance |
| 07/30/2003 | CN1433145A Changeable power amplifier |
| 07/30/2003 | CN1433144A 电路 Circuit |
| 07/30/2003 | CN1433141A Temperature compensating device and electronic equipment with the device |
| 07/30/2003 | CN1116736C Double-side band pilot technology for distorted control system generated from reducing circuit |
| 07/30/2003 | CN1116735C Hybrid Chireix/Doherty amplifiers power waveform synthesis |
| 07/29/2003 | US6600792 Predistortion technique for high power amplifiers |
| 07/29/2003 | US6600516 Digital RF transmitter system employing both digital pre-correction and analog pre-correction |
| 07/29/2003 | US6600483 Driving circuit |
| 07/29/2003 | US6600388 Electronic variable delay line filters using two in-line varactor-controlled four-input couplers allowing variable delay |
| 07/29/2003 | US6600376 High efficiency power amplifier |
| 07/29/2003 | US6600375 Floating source modulator for silicon carbide transistor amplifiers |
| 07/29/2003 | US6600370 Intermodulation signal detector |
| 07/29/2003 | US6600369 Wideband linear amplifier with predistortion error correction |
| 07/29/2003 | US6600368 Adaptive predistortion linearizer |
| 07/29/2003 | US6600366 Differential line driver circuit |
| 07/29/2003 | US6600365 Audio transient suppression circuits and methods |
| 07/29/2003 | US6600327 Method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and circuit |
| 07/29/2003 | CA2298928C Linear power control loop |
| 07/29/2003 | CA2298310C Low-voltage transconductance amplifier/filters |
| 07/28/2003 | CA2417395A1 Monolithic transformer compensated circuit |
| 07/24/2003 | WO2003061116A1 Improvements in or relating to power amplifiers |
| 07/24/2003 | WO2003061115A1 Composite power amplifier |
| 07/24/2003 | WO2003061114A2 Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers |
| 07/24/2003 | WO2003033749A8 Matrix element precharge voltage adjusting apparatus and method |
| 07/24/2003 | WO2001099274A3 Audio amplifier power and temperature controller having network detecting and associated methods |
| 07/24/2003 | US20030139161 Direct conversion of low power high linearity receiver |
| 07/24/2003 | US20030139159 Protective circuit and radio frequency device using the same |
| 07/24/2003 | US20030137355 Method and circuit for controlling power amplifiers |
| 07/24/2003 | US20030137351 Low noise level differential amplifier |
| 07/24/2003 | US20030137350 Linear variable gain amplifiers |
| 07/24/2003 | US20030137348 Predistortion-based amplifier, transmitter and envelope detector |
| 07/24/2003 | US20030137347 High frequency power amplifier and wireless communication module |
| 07/24/2003 | US20030137346 Transmitter including a composite amplifier |
| 07/24/2003 | US20030137344 Dual feedback linear amplifier |
| 07/24/2003 | US20030137341 Method and system for charge pump active gate drive |
| 07/24/2003 | DE10223544C1 Amplifier device for hearing aid with microphone and pick-up coil inputs, has amplifier provided with separate filters for acoustic and inductive feedback compensation |
| 07/23/2003 | EP1330057A1 Electric field intensity detecting circuit and limiter amplifier |
| 07/23/2003 | EP1330022A2 Electric circuit |
| 07/23/2003 | EP1330021A2 Switchable power amplifier |
| 07/23/2003 | EP1328981A1 Universal temperature compensation application specific integrated circuit |
| 07/23/2003 | CN1431772A Single end point sensing amplitier |
| 07/23/2003 | CN1115908C Systems and methods for dynamically controlling variable power amplifier |
| 07/23/2003 | CN1115778C Mute control circuit |
| 07/23/2003 | CN1115772C Electronic circuit for converting differential signal into single-ended signal by resistor network |
| 07/23/2003 | CN1115771C Differential amplifier |
| 07/23/2003 | CN1115769C Pilot signal detection system using band stop filter |
| 07/22/2003 | US6597650 Nonlinearity compensation circuit and method, control circuit and method for nonlinearity compenstation circuit and recording and/or playback apparatus employing the same |
| 07/22/2003 | US6597244 System and method for closed loop VSWR correction and tuning in RF power amplifiers |
| 07/22/2003 | US6597243 Distributed amplifier having a tapered transconductance architecture |
| 07/22/2003 | US6597242 Reconfigurable device for amplifying RF signals |
| 07/22/2003 | US6597241 High performance audio transmission channel |
| 07/22/2003 | US6597239 Offset control of an operational amplifier |
| 07/17/2003 | WO2002071597A3 Circuit arrangement for providing an exponential pre-distortion for an adjustable amplifier |
| 07/17/2003 | WO2002017479A3 Amplifier bias voltage generating circuit and method |
| 07/17/2003 | US20030132930 Electric circuit |
| 07/17/2003 | US20030132802 Adaptive controller |
| 07/17/2003 | US20030132801 Switchable power amplifier |
| 07/17/2003 | US20030132800 Amplifier arrangement |