H03G 3 - Gain control in amplifiers or frequency changers

Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
11/1997
11/20/1997	WO1997043826A2 Gain control
11/19/1997	EP0807338A1 Differential feed-forward amplifier power control for a radio receiver system
11/19/1997	EP0807335A1 Wide dynamic range analog to digital conversion
11/19/1997	EP0807332A1 Filter with feed-forward agc
11/19/1997	EP0807331A1 Radio receiver with a potentiometer as volume regulator
11/19/1997	CN1165430A Amplifier circuit for transmitter
11/19/1997	CN1165429A Multistage variable gain amplifier circuit
11/18/1997	CA2075011C Linear compensating circuit
11/13/1997	WO1997042789A1 Circuit, audio system and method for processing signals, and a harmonics generator
11/13/1997	WO1997042704A2 Degenerated differential pair with controllable transconductance
11/13/1997	DE19718109A1 Linear amplifier with transistor pair
11/13/1997	DE19619208A1 Sigma-delta class D amplifier for CD player
11/13/1997	DE19619003A1 Multiplex transmitter for multichannel audio signals
11/12/1997	EP0806840A2 Radio frequency transceiver and subassemblies thereof
11/12/1997	EP0806087A1 Method and apparatus for a linear transmitter
11/12/1997	EP0806081A1 Circuit for briefly muting the reproduction of a low-frequency signal in a radio receiver
11/12/1997	CN1164936A Method of control of light amplification medium, light amplifier, and system using the same
11/11/1997	US5687195 Digital automatic gain controller for satellite transponder
11/06/1997	WO1997041643A1 Adaptive radio receiver apparatus
11/06/1997	WO1997041642A1 Transmitter combiner arrangement
11/05/1997	EP0449823B1 Improved variolosser
11/04/1997	US5684480 Wide dynamic range analog to digital conversion
11/04/1997	CA2087845C Apparatus and method for generating a transition between the on and off states of a radio frequency transmitter
10/1997
10/30/1997	WO1997040584A1 Hybrid analog/digital method and apparatus for controlling the transmission power level of a radio transceiver
10/30/1997	WO1997040577A1 Process for controlling the power of the transmission amplifier of radio equipment
10/29/1997	EP0804023A2 High speed channel detection, storing, and switching apparatus and method thereof
10/29/1997	EP0803978A2 Tone control device and sound volume/tone control device for reducing noise at the time of tone modification
10/29/1997	EP0803977A2 Automatic gain control
10/29/1997	EP0803973A1 Linear power amplifier with automatic gate/base bias control for optimum efficiency
10/29/1997	EP0803929A1 Loaded antenna
10/29/1997	EP0803149A1 Data independent automatic gain control circuit for telecommunication applications
10/29/1997	CN1163536A High speed channel detection, storage and switch device and its method
10/29/1997	CN1163527A High frequency radio signal receiving device for digit communication
10/29/1997	CN1163516A Automatic gain control circuit for radio receiver
10/28/1997	US5682162 Oversampling digital-to-analog converter with auto-muting feature
10/28/1997	US5682119 Variable gain circuit
10/23/1997	DE19615842A1 Verfahren zur Steuerung der Leistung eines Sendeverstärkers eines Funkgerätes Method for controlling the power of a transmission amplifier of a radio
10/22/1997	EP0801857A1 Method for substituting bad speech frames in a digital communication system
10/22/1997	EP0801856A1 Spread-spectrum system and method
10/22/1997	CN1163034A AGC circuit for a digital receiven
10/22/1997	CN1162879A Satellite broadcast tuner capable
10/22/1997	CN1162866A Semiconductor integrated circuit device having controlled overdriving circuit
10/22/1997	CN1162816A Signal-processing preamplifier for optical disc system
10/21/1997	US5680075 Digital automatic gain control
10/21/1997	US5679953 Automatic threshold setting circuit
10/16/1997	WO1997038543A1 A squelch in an analogue mobile communication network
10/16/1997	WO1997038488A1 Method for automatically adjusting audio response for improved intelligibility
10/16/1997	DE19610455A1 Noise elimination method for radio receiver
10/15/1997	CN1162380A Method for demodulating digitally modulated data signals
10/15/1997	CN1162375A Differential feed-forward amplifier power control circuit of radio receiver system
10/15/1997	CN1162374A Method and apparatus for linear transmitter
10/15/1997	CN1162218A Device for controlling conversion gain of down converter
10/14/1997	US5678218 Circuit for removing random FM noise
10/14/1997	US5678214 RF receiver using if amplifier operative during low level reception
10/14/1997	US5678209 Transmit power level detection circuit with enhanced gain characteristics
10/14/1997	US5678198 System for controlling signal level at both ends of a transmission link, based upon a detected value
10/14/1997	US5677962 Hybrid analog and digital amplifier with a delayed step change in the digital gain
10/14/1997	US5677960 On-vehicle sound control apparatus
10/14/1997	US5677561 Temperature compensated logarithmic detector
10/09/1997	WO1997033378A3 Improvements in or relating to radio receivers
10/08/1997	EP0800267A2 Apparatus for envelope shaping of burst signals in a transmitter
10/08/1997	CN1161602A Audio signal processing apparatus
10/07/1997	US5675656 Power amplifier with clipping level control
10/07/1997	US5675614 Digital squelch circuit
10/07/1997	US5675611 Output power control and envelope shaping for a pulsed transmitter
10/07/1997	US5675290 Microwave amplifier circuit
10/07/1997	US5675287 Digital DC correction circuit for a linear transmitter
10/07/1997	US5675286 Method and apparatus for an improved linear transmitter
10/07/1997	US5675245 Power detector using a constant quiescent voltage divider
10/04/1997	CA2201408A1 Transmission apparatus
10/02/1997	WO1997036382A1 Cdma power control
10/02/1997	WO1997036372A1 Selective call receivers with stepwise variable gain control with hysteresis
10/02/1997	DE19630395C1 Electrical mute control circuit for audio signal
10/01/1997	EP0798850A2 Improvements in or relating to radio receivers
10/01/1997	EP0797873A2 Method and apparatus for increasing receiver immunity to interference
10/01/1997	CN1160953A Saturationproof circuit for receiver
09/1997
09/30/1997	US5673286 Spread spectrum multipath processor system and method
09/30/1997	US5673001 Method and apparatus for amplifying a signal
09/30/1997	US5672999 Audio amplifier clipping avoidance method and apparatus
09/30/1997	CA2070027C Portable telephone
09/24/1997	EP0797299A2 Variable gain control
09/24/1997	EP0797298A2 Automatic gain control loop
09/24/1997	EP0796526A1 Method and arrangement in a transmission system
09/24/1997	CN1160311A Mute control circuit
09/24/1997	CN1160305A Tri-state audio differential driver
09/21/1997	CA2200530A1 Variable-gain control
09/18/1997	WO1997034369A1 Pulse waveform generator
09/18/1997	WO1997034368A1 Tuning amplifier
09/17/1997	EP0795967A1 Power saving method for radio receiver
09/17/1997	CN1159869A Method and arrangement in a transmission system
09/16/1997	US5668505 Ring oscillator having two rings whose outputs are combined
09/16/1997	US5668502 Amplifier stage having a switchable gain and reduced distortion
09/16/1997	US5668499 Tube type power amplifier with distortion control
09/16/1997	CA2089370C Variable speaker muting based on received data
09/16/1997	CA2089360C Power control circuitry for a tdma radio frequency transmitter
09/12/1997	WO1997033378A2 Improvements in or relating to radio receivers
09/12/1997	WO1997024858A3 Voice enhancement system and method
09/11/1997	DE19708996A1 Radio communications apparatus with combination diversity
09/10/1997	EP0793896A1 Audio signal reproduction apparatus
09/09/1997	US5666431 Apparatus for controlling signal power

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