H03G 3 - Gain control in amplifiers or frequency changers

Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
01/1995
01/05/1995	WO1995001050A1 Using d-c feedback with on-chip filtering to balance i-f drive to second detector in monolithic ic
01/04/1995	EP0632586A1 Device for automatic control of sounds with fuzzy logic
01/04/1995	EP0632585A1 System for the bias control of an amplifier
01/04/1995	EP0632584A1 Power amplifier for a radio frequency signal
01/04/1995	EP0632583A1 Variable gain amplifier
01/04/1995	EP0631686A1 Computer disk drive integrated data path circuit optimized for handling both data and servo signals.
01/04/1995	CN1027334C Floating point amplifier of parallel and instantaneous type
01/03/1995	US5378996 RF power amplifier control
01/03/1995	US5378933 Circuit arrangement having a switching amplifier
01/03/1995	CA2019393C Video preamplifier circuit
12/1994
12/31/1994	CA2126919A1 System for controlling the bias voltage applied to an amplifier
12/28/1994	EP0631398A2 Method and apparatus for waveform shaping of packet data
12/28/1994	EP0631395A1 Signal processing circuitry comprising an input stage with variable gain
12/28/1994	EP0631383A2 Acoustic reproduction systems
12/28/1994	EP0631382A2 Method for optimising the automatic adjustment of an amplifier in an rf-receiver
12/28/1994	EP0630536A1 Audio amplifiers
12/28/1994	CN1096915A Parallel untuned video if amplifiers supplied signals from TV 1st detector via respective input filters
12/28/1994	CN1096914A Using D-C feedback with on-chip filtering to balance I-F drive to second detector in monolithic
12/27/1994	US5377272 Switched signal processing circuit
12/27/1994	US5377231 Automatic gain control circuit for a digital baseband line equalizer
12/27/1994	US5376895 Control circuit and method for transmission output
12/25/1994	WO1995001049A1 Parallel untuned video if amplifiers supplied signals from tv 1st detector via respective input filters
12/22/1994	WO1994029953A1 Temperature compensated variable gain amplifier
12/22/1994	DE4419841A1 Method for controlling the operating point of an amplifier stage
12/21/1994	EP0630106A1 Automatic gain control apparatus
12/21/1994	EP0630105A2 Voltage controlled attenuator for speakerphones
12/20/1994	US5374896 Distortion compensating circuit of high-frequency power amplifier
12/15/1994	DE4338357C1 Electronic system for the early recognition, in the car, of road traffic signals
12/13/1994	US5373251 Transmission output amplifier
12/07/1994	EP0627814A1 Digital circuit to regulate the gain of an amplifier stage
12/06/1994	US5371803 Tone reduction circuit for headsets
12/06/1994	US5371477 Linear amplifier
12/06/1994	US5371473 Thermally stable ALC for pulsed output amplifier
11/1994
11/30/1994	EP0626765A1 Radio communication apparatus
11/29/1994	US5369792 AGC circuit of FM front-end portion for controlling bandwidth detection sensitivity
11/29/1994	US5369791 Apparatus and method for discriminating and suppressing noise within an incoming signal
11/29/1994	US5369789 Burst signal transmitter
11/29/1994	US5369711 Automatic gain control for a headset
11/24/1994	WO1994027364A1 Circuitry for a telephone subscriber station
11/24/1994	WO1994027362A1 Circuitry for amplifier
11/24/1994	DE4316526A1 Transmitter with a controllable power amplifier
11/23/1994	EP0625136A1 Higher aldehyde separation process
11/23/1994	EP0559840A4 High dynamic range closed loop automatic gain control circuit
11/22/1994	US5367268 Transmission signal output control circuit
11/22/1994	CA2019935C Output waveform control circuit
11/15/1994	US5365279 Using D-C feedback with on-chip filtering to balance I-F drive to second detector in monolithic IC
11/15/1994	US5365195 Volume control apparatus producing reduced noise and distortion
11/15/1994	US5365190 Feed-forward digital phase and amplitude correction system
11/15/1994	US5365187 Power amplifier utilizing the vector addition of two constant envelope carriers
11/09/1994	EP0623995A1 Device for the noise dependent volume control of a car radio
11/08/1994	US5363064 Preamplifier for optical communication having a gain control circuit
11/08/1994	US5363062 Audio amplifier on-off control circuit
11/08/1994	US5363057 Control device for power amplifier
11/08/1994	US5363055 Photodiode preamplifier with programmable gain amplification
11/02/1994	EP0622907A2 A radio phone and method of operating a radio phone
11/02/1994	EP0622896A1 Sound system gain and equalization circuit
11/02/1994	EP0622895A1 Communication apparatus utilizing power amplifier
11/02/1994	EP0486538B1 Circuit arrangement for automatic gain control
11/01/1994	US5361406 Audio level equalization of broadcast and national weather service FM radio signals
11/01/1994	US5361395 Gain control circuit
11/01/1994	US5361007 Apparatus for controlling consumption power for GaAs FET
10/1994
10/29/1994	CA2121299A1 Sound system gain and equalization circuit
10/27/1994	DE4313256A1 Method for suppressing feedback in the case of hall or large-field audio systems and circuit arrangement for carrying out the method
10/26/1994	EP0621686A2 Amplifier
10/26/1994	EP0621685A1 RF-amplifier with level control and radio transmitter including the same
10/25/1994	US5359665 Audio bass frequency enhancement
10/25/1994	CA2000785C Digital automatic gain control
10/23/1994	CA2121018A1 Rf amplifier with signal-level control, and radio transmitter equipped therewith
10/19/1994	EP0620639A1 Variable gain amplifier for low supply voltage
10/18/1994	US5357567 Method and apparatus for volume switched gain control
10/18/1994	US5357186 Circuit for detecting the inter-phase voltage of an alternator for implementing a regulator associated with such an alternator
10/12/1994	EP0619648A1 Circuit for the attenuation of a digital audio signal during short disturbances
10/11/1994	US5355534 Frequency mixing circuit having automatic gain control function
10/11/1994	US5355531 Squelch circuit for volume control of a radio transmitter and receiver
10/11/1994	US5355096 Compace HBT wide band microwave variable gain active feedback amplifier
10/05/1994	EP0618675A1 Electronic device with low power consumption
10/04/1994	US5352988 Automatic gain controller
10/04/1994	CA2044672C Burst control circuit for use in tdma communications system
09/1994
09/29/1994	WO1994022216A1 Photodiode preamplifier with programmable gain amplification
09/27/1994	US5351030 Variable attenuator for attenuating gain of analog signal in accordance with digital signal
09/27/1994	US5350908 Automatic gain control circuit having disturbance cancellation capabilities
09/21/1994	EP0616425A1 Audio amplifier arrangement
09/21/1994	EP0616424A1 Method of and device for detecting pulsatory interference signal in a sound signal
09/20/1994	US5349639 Automatic electronic audio signal attenuating device and method therefor
09/20/1994	US5349300 Method and apparatus for controlling a peak envelope power of a PA
09/15/1994	WO1994021071A1 Method and apparatus for receiving electromagnetic radiation within a frequency band
09/14/1994	EP0615397A2 Noise suppression circuit for radio transceiver microphone
09/14/1994	EP0615337A1 Method for setting the level of a loudspeaker
09/13/1994	US5347569 Gain control circuitry for QAM demodulator
09/13/1994	US5347388 Push-pull optical receiver having gain control
09/13/1994	US5347235 Optically controlled oscillator
09/13/1994	US5346568 Expanding electrical insulating laminate, method for its manufacture and application
09/13/1994	US5346046 Automation control with improved operator/system interface
09/12/1994	CA2118767A1 Radio transceiver
09/07/1994	EP0614270A1 Digital signal receiver and method of doing the same
09/07/1994	EP0614269A1 Power amplifier for a radio frequency signal
09/06/1994	US5345511 Digital signal attenuation circuit for a compact disc-interactive player
09/06/1994	US5345191 Broad-band amplifier
09/06/1994	US5345118 Precision MOS resistor
08/1994
08/31/1994	EP0613258A1 Power controlling arrangement for duplex transmission

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