Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
01/2001
01/25/2001WO2001006644A1 Variable gain amplifier with improved linearity
01/25/2001DE19934747A1 Microphone amplification control method e.g. for telecommunications and consumer applications
01/24/2001EP1071226A1 Aggregate overload power control
01/24/2001EP1071206A1 A receiver portion of a telephone
01/23/2001US6178321 Telephone system comprising a base station and at least one handset, method implemented in such a system, subscriber station and base station suitable for such a system
01/23/2001US6178313 Control of gain and power consumption in a power amplifier
01/23/2001US6178309 Electronic device having an AGC loop
01/23/2001US6177962 Apparatus and method for preventing oversaturation of chrominance signals
01/23/2001US6177839 Variable gain amplifier circuit
01/23/2001CA2090466C Power amplifier
01/19/2001CA2311901A1 Aggregate overload power control
01/18/2001DE19931270A1 Automobiles Soundsystem und Automobil mit einem solchen Automobiles and automobile sound system with such a
01/17/2001EP1068666A1 Hybrid chireix/doherty amplifiers power waveform synthesis
01/17/2001CN1280417A Automatic gain controller and method and commcnication equipment with said control function
01/17/2001CN1060898C Transmitters for radio telephone base stations
01/16/2001US6175730 Radio receiver with a potentiometer as volume control
01/16/2001US6175726 Receiver architecture for the receiving of angle-modulated/angle-keyed carrier signals
01/16/2001US6175633 Radio communications apparatus with attenuating ear pieces for high noise environments
01/16/2001US6175586 Adjusting a transmitter power level for a spread spectrum transmitter
01/16/2001US6175279 Amplifier with adjustable bias current
01/16/2001US6175278 Variable gain amplifier circuit
01/11/2001WO2001003292A1 Power control for non-constant envelope modulation
01/10/2001EP1067698A1 Receiver comprising intermodulation interference detection means
01/10/2001EP1067697A1 Receiver with automatic gain control circuit
01/10/2001EP1067696A2 Distortion compensation method and wireless communication apparatus
01/10/2001EP1067682A2 Ambient adjusted volume control for in-vehicle messages
01/10/2001EP1067681A2 Automatic gain control device and method, and radio communication apparatus having the automatic gain control function
01/10/2001EP1067680A2 Automobile Sound System and Car Comprizing such a System
01/10/2001EP1066688A1 A decoder having a gain controller in a mobile communication system
01/10/2001EP1066683A1 Wide-dynamic-range variable-gain amplifier
01/10/2001EP0807331B1 Radio receiver with a potentiometer as volume regulator
01/10/2001CN1279564A Mobile wireless communication device
01/10/2001CN1279556A Environment noise level evaluation apparatus and method, communication device and data terminal apparatus
01/09/2001US6173160 Mobile station having drift-free pulsed power detection method and apparatus
01/09/2001US6173056 Methods for adjusting audio signals responsive to changes in a power supply level and related communications devices
01/09/2001US6172567 Radio communication apparatus and radio frequency power amplifier
01/09/2001US6172566 Low noise amplifier
01/09/2001US6172559 Variable gain amplifying device
01/04/2001WO2001001567A1 A muting circuit having controllable impedance means for soft muting
01/03/2001EP1065886A2 Chroma overload protection apparatus
01/03/2001EP1065786A2 Communication set radio communication system and automatic gain control method for radio communication set
01/03/2001EP1065785A2 Transmission circuit and radio transmission apparatus
01/03/2001EP1065653A2 Apparatus for background noise level estimation and volume control of a communication apparatus
01/03/2001EP1064722A1 Buffer circuit
01/02/2001US6169886 Power amplifier control according to a delayed waveform suitable for use in a communication device
01/02/2001US6169807 Remote automatic audio level control device
01/02/2001US6169800 Integrated circuit amplifier and method of adaptive offset
01/02/2001US6169638 Automatic gain control circuit and method
01/02/2001US6169455 Power amplifying circuit and automatic power control method
01/02/2001US6169452 Gain control, variable gain and automatic gain control amplifiers including differential circuit transistors and current splitter
12/2000
12/28/2000WO2000079748A1 Automatic gain control for ofdm receiver
12/28/2000WO2000079713A2 Digital broadcast transmission system comprising a power control system using a pilot signal
12/28/2000CA2374255A1 Digital broadcast transmission system comprising a power control system using a pilot signal
12/27/2000EP1062727A1 Gain control amplifier, variable gain amplifier and automatic gain control amplifier
12/27/2000CN1278373A Control method and control arrangement
12/26/2000US6167244 Gain control method and receiver
12/26/2000US6167242 Offset voltage cancellation system for radio frequency power controllers
12/26/2000US6166978 Semiconductor differential amplifier having a gain controlled by a memory transistor
12/26/2000US6166598 Power amplifying circuit with supply adjust to control adjacent and alternate channel power
12/26/2000US6166579 Digitally controlled signal magnitude control circuit
12/21/2000WO2000078030A1 Telephone system and method of operating same
12/21/2000WO2000077971A1 Automatic gain control for improved decoding of multi-carrier signal
12/21/2000WO2000077925A1 Adjustment of the hf output of mobile radio devices
12/21/2000WO2000077924A1 Digital automatic gain control
12/21/2000DE19927292A1 Telefonanordnung und Verfahren zum Betrieb einer solchen Telephone arrangement and method for operating such a
12/21/2000CA2337379A1 Digital automatic gain control
12/20/2000EP1061643A2 Receiver and gain control method of the same
12/20/2000CN1277753A Amplifier
12/19/2000US6163685 Receiver with controllable amplifier means
12/19/2000US6163215 Variable gain amplifier
12/19/2000US6163212 Power amplifier system
12/14/2000WO2000076063A1 Power amplifier driver system for wireless handset
12/14/2000WO2000076062A1 Improved diode detector
12/14/2000WO2000076061A1 Low-noise amplifier with switched gain and method
12/13/2000EP1059728A2 Integrated on-board automated alignment for a low distortion amplifier
12/13/2000EP1059727A2 A linearized channel amplifier
12/13/2000EP1058963A1 Amplifier with adjustable bias current
12/12/2000US6160452 Circuits and methods for a monitoring circuit in a network amplifier
12/12/2000US6160449 Power amplifying circuit with load adjust for control of adjacent and alternate channel power
12/12/2000US6160448 Digitally-controlled low noise variable-gain amplifier
12/06/2000EP1058405A2 Cellular mobile telephone terminal
12/06/2000EP1057257A1 Lna control-circuit for a receiver having closed loop automatic gaincontrol
12/06/2000EP1057256A1 Computer tomograph with a multi-stage charge-integrated read amplifier
12/06/2000CN1275874A Cellular mobile telephone terminal
12/06/2000CN1275838A Gain control circuit, receiver and transmitter, radio communication device and system
12/05/2000US6157726 Circuit and method of preventing audio pop in an electronic audio device
12/05/2000US6157022 Bias voltage control circuitry for avalanche photodiode taking account of temperature slope of breakdown voltage of the diode, and method of adjusting the same
11/2000
11/30/2000WO2000072441A1 Automatic gain control and offset correction
11/30/2000DE19923790A1 Adaptive regulation of the gain of a feedback coupled amplifier based upon period and output amplitude
11/29/2000EP1056198A2 Circuitry and Method of Adaptive Control of the Gain of a Feedback Amplifier
11/29/2000EP1056197A2 Gain Control Circuit
11/28/2000US6154664 Dual band cellular phone with two power amplifiers and power control circuit therefore
11/28/2000US6154550 Method and arrangement for automatically limiting distortion in audio devices
11/28/2000US6154548 Audio mute control signal generating circuit
11/28/2000US6154503 Automatic gain control system that responds to baseband signal distortion
11/23/2000WO2000070774A1 Method and apparatus for obtaining optimal performance in a receiver
11/23/2000WO2000070752A1 Digital amplifier
11/23/2000WO2000039922A9 Multiple stage high dynamic range variable gain amplifier
11/22/2000EP0812492A4 Dual audio program system
11/22/2000CN1274204A Radio communicating device and emitting power control method for radio communicating device