| 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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| 04/11/2007 | EP1258081B1 An analog reflective predistorter for power amplifiers |
| 04/11/2007 | CN1947331A Doherty amplifier using active phase splitter |
| 04/11/2007 | CN1947330A 可编程无线收发器 Programmable wireless transceivers |
| 04/11/2007 | CN1945966A Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 04/11/2007 | CN1310423C Output stage circuit of power amplifier |
| 04/10/2007 | US7203328 Hearing aid, and method for reducing feedback therein |
| 04/10/2007 | US7202749 AC coupling technique for improved noise performance and simple biasing |
| 04/10/2007 | US7202748 Ultra-wideband constant gain CMOS amplifier |
| 04/10/2007 | US7202747 Self-tuning variable impedance circuit for impedance matching of power amplifiers |
| 04/10/2007 | US7202745 Power amplifier circuit |
| 04/10/2007 | US7202743 High frequency amplifier |
| 04/10/2007 | US7202742 Digital amplification device |
| 04/10/2007 | US7202737 Method of influencing an input signal and predistorter |
| 04/10/2007 | US7202736 CDMA power amplifier design for low and high power modes |
| 04/10/2007 | US7202732 Transimpedance amplifier with linearized transconductance feedback |
| 04/10/2007 | US7202645 Regulated power supply unit |
| 04/05/2007 | WO2007038085A2 Line drivers with extended linearity |
| 04/05/2007 | WO2007036990A1 Distortion compensating device |
| 04/05/2007 | WO2006117599A3 Single - ended to differential transformer circuit |
| 04/05/2007 | WO2005060596B1 A transmitter for modulation distortion compensation |
| 04/05/2007 | US20070076904 Microphone preamplifier |
| 04/05/2007 | US20070076903 Mute circuit |
| 04/05/2007 | US20070076902 Method and Apparatus for Removing or Isolating Voice or Instruments on Stereo Recordings |
| 04/05/2007 | US20070076814 Amplifier circuit and amplifying method |
| 04/05/2007 | US20070075784 Radio frequency power amplifier |
| 04/05/2007 | US20070075783 Handset Radiofrequency Front End Module In Fine Pitch Quad Flat No Lead (FQFP-N) Package |
| 04/05/2007 | US20070075782 Radio frequency power amplifier circuit |
| 04/05/2007 | US20070075770 Base-band digital pre-distortion-based method for improving efficiency of rf power amplifier |
| 04/05/2007 | US20070075769 Circuit configuration having a feedback operational amplifier |
| 04/05/2007 | US20070075768 Circuit configuration having a feedback operational amplifier |
| 04/05/2007 | US20070075767 Inductor element containing circuit board and power amplifier module |
| 04/05/2007 | DE19710474B4 Übertragungsleistungserfassungsschaltung zum Erfassen einer Übertragungsleistung eines Funksignals Transmission power detecting circuit for detecting a transmission power of a radio signal |
| 04/05/2007 | DE10136503B4 Abtastverstärkerschaltung und Ausgabedatenverstärker eines Halbleiterbauelementes Sense amplifier and amplifier output data of a semiconductor device |
| 04/05/2007 | CA2623433A1 Line drivers with extended linearity |
| 04/04/2007 | EP1683269A4 Electronically programmable multimode circuit |
| 04/04/2007 | EP1573903B1 Phase-error based signal alignment |
| 04/04/2007 | CN2886917Y 温度补偿电路 Temperature compensation circuit |
| 04/04/2007 | CN1943121A Transmitter and radio communication device |
| 04/04/2007 | CN1943106A 一种Doherty放大器 One kind of Doherty amplifier |
| 04/04/2007 | CN1942016A Chargeable circuit, integrated circuit and controlling method |
| 04/04/2007 | CN1941617A Voltage-adjusting amplifier for signal processing system |
| 04/04/2007 | CN1941612A Amplifier circuit improved in linearity and frequency band |
| 04/03/2007 | US7200370 Power amplifier having enhanced swing cascode architecture |
| 04/03/2007 | US7200369 LINC power transmitter |
| 04/03/2007 | US7200099 Low voltage differential signal transmitting circuit and optical disc recording apparatus |
| 04/03/2007 | US7199736 Digital linearizing system |
| 04/03/2007 | US7199670 Use of a thick oxide device as a cascode for a thin oxide transconductance device in MOSFET technology and its application to a power amplifier design |
| 04/03/2007 | US7199669 Dual gate cascade amplifier |
| 04/03/2007 | US7199668 Integrated circuit and optical pickup device |
| 04/03/2007 | US7199667 Integrated power amplifier arrangement |
| 04/03/2007 | US7199663 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 04/03/2007 | US7199662 Bias circuit for a display driver operational amplifier |
| 04/03/2007 | US7199656 Amplifiers with compensation |
| 04/03/2007 | US7199655 Multistage amplifier circuit without interstage coupling capacitor |
| 04/03/2007 | US7199654 Multi-stage amplifier with switching circuitry |
| 04/03/2007 | US7199652 Amplifier; and transmitter and communication device incorporating the same |
| 04/03/2007 | US7199647 Constant current circuit |
| 04/03/2007 | US7199644 Bias circuit having transistors that selectively provide current that controls generation of bias voltage |
| 04/03/2007 | CA2444498C Inserting apparatus and method with controlled, master cycle speed-dependent actuator operations |
| 03/29/2007 | WO2007035358A2 Amplifier system employing analog polynomial predistortion with sub-nyquist digital adaptation |
| 03/29/2007 | WO2007034500A1 Method and apparatus for improving the performance of mimo wireless systems |
| 03/29/2007 | WO2007034403A1 Electronic device with an amplifier output stage and an over-current detection means |
| 03/29/2007 | WO2007034231A1 Multistage resonant amplifier system and method |
| 03/29/2007 | WO2007001720A3 Apparatus for removing distortions created by an amplifier |
| 03/29/2007 | US20070073523 Transmitter |
| 03/29/2007 | US20070073522 Determination of equivalent series resistance |
| 03/29/2007 | US20070069820 Electronic parts for high frequency power amplifier |
| 03/29/2007 | US20070069816 Method for transconductance linearization for DC-coupled applications |
| 03/29/2007 | US20070069813 Correlation method for monitoring power amplifier |
| 03/29/2007 | US20070069812 Input/output signals preserver circuit of amplification circuits |
| 03/29/2007 | US20070069811 Line drivers with extended linearity |
| 03/29/2007 | DE102005045437A1 Amplifying circuit for e.g. lambda sensor, has operational amplifier, metal-oxide semiconductor field-effect transistor, multiplier, voltage dividers, resistors provided for adjusting voltage offset of output voltage based on input voltage |
| 03/29/2007 | DE10064257B4 Schaltungsanordnung und Verfahren zur Übertragung von Daten Circuit arrangement and method for transmitting data |
| 03/28/2007 | EP1768254A1 High output amplifier |
| 03/28/2007 | EP1766774A2 Power amplifier utilizing high breakdown voltage circuit topology |
| 03/28/2007 | EP1766773A1 Power source and method for controlling operational power |
| 03/28/2007 | CN1938942A Power amplifier unit, communication terminal and control method of power amplifier unit |
| 03/28/2007 | CN1938941A 数字传声器 Digital Microphone |
| 03/28/2007 | CN1938940A High-efficiency amplifier |
| 03/28/2007 | CN1938939A Transmitter predistortion circuit and method therefor |
| 03/28/2007 | CN1938597A Measuring circuit for the output of a power amplifier and a power amplifier comprising the measuring circuit |
| 03/28/2007 | CN1937402A Speaker protection circuit |
| 03/28/2007 | CN1937401A Current-controlled cmos delay cell with variable bandwidth |
| 03/28/2007 | CN1307791C Changeable power amplifier |
| 03/28/2007 | CN1307789C High-frequency amplifier circuit with negative impedance cancellation |
| 03/28/2007 | CN1307788C Transmission line tuning switch power amplifier |
| 03/28/2007 | CN1307787C Gain variable amplifier |
| 03/28/2007 | CN1307786C Power amplifying circuit and method for supplying power by multiple required power output level |
| 03/28/2007 | CN1307637C Booster circuit |
| 03/28/2007 | CN1307597C 3d图象处理设备 3d image processing apparatus |
| 03/27/2007 | US7197436 System and method for measuring audio processing attributes in a computer system |
| 03/27/2007 | US7197286 Radio with a distortion compensation capability |
| 03/27/2007 | US7197085 Frequency-dependent magnitude pre-distortion for reducing spurious emissions in communication networks |
| 03/27/2007 | US7196585 Fast-response current limiting |
| 03/27/2007 | US7196584 Amplifier circuit |
| 03/27/2007 | US7196580 Digital audio amplifier including phase lead-lag compensator for increasing self-oscillation frequency |
| 03/27/2007 | US7196579 Gain-controlled amplifier, receiver circuit and radio communication device |
| 03/27/2007 | US7196578 Amplifier memory effect compensator |
| 03/27/2007 | US7196577 Amplifier with capacitor selection |
| 03/27/2007 | US7196576 Method and apparatus for control of predistortion linearizer based on power series |