Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
04/1995
04/18/1995US5408698 Radio tele-communication device having function of variably controlling received signal level
04/18/1995US5408694 Receiver squelch circuit with adjustable threshold
04/18/1995US5408693 Muting of radio-transmitter digital audio based on received signal strength
04/18/1995US5408685 Multipath detector using phase comparison of stereo pilot signal
04/18/1995US5408460 Device for processing signals in the form of packets
04/18/1995US5408205 Ultrahigh accuracy digital programmable attenuator
04/18/1995US5408199 Gain control amplifier having reduced feedback resistance
04/18/1995US5408197 Automatic power control circuit for controlling transmitting power of modulated radio frequency signal
04/13/1995WO1995010096A1 Transponder with automatic gain control
04/12/1995EP0648012A1 Power control for cartesian amplifiers
04/11/1995US5406636 Signal processing device
04/11/1995US5406227 Method and apparatus for controlling RF spectral splatter into adjacent channels when activating an RF transmitter
04/06/1995WO1995009494A1 Multiple antenna home base for digital cordless telephones
04/05/1995EP0646394A1 Striding exerciser with upwardly curved tracks
04/04/1995US5404586 Transmitter having automatic power controller
04/04/1995US5404058 Level detecting circuit
04/04/1995US5404050 Single-to-differential converter
03/1995
03/31/1995WO1995009489A1 Method and apparatus for stabilizing the gain of a control loop in a communication device
03/30/1995WO1995008866A1 Method and arrangement for controlling the operation of a high-frequency power amplifier
03/29/1995EP0645899A2 Mobile communication apparatus with linear power control over wide dynamic range
03/29/1995EP0645063A1 Receiver automatic gain control
03/28/1995US5402500 Adaptive proportional gain audio mixing system
03/28/1995US5402499 Multimedia controller
03/28/1995US5402017 Controllable circuit configuration for compensating fluctuations in an amplifier
03/22/1995EP0644606A1 Portable radio communication device and loaded antenna therefor
03/21/1995US5400411 Volume/balance control apparatus
03/21/1995US5399990 Differential amplifier circuit having reduced power supply voltage
03/16/1995WO1995007574A1 Amplifier stage with a db-linear output voltage
03/16/1995WO1995007573A1 Method and arrangement for controlling the operation of a high-frequency power amplifier
03/16/1995DE4330549A1 Automatic gain (fading) control loop for a radiofrequency receiver
03/15/1995EP0643480A1 Impulse noise suppression circuit for a multiplex signal
03/14/1995US5398287 Voice activated multiple microphone electroacoustic amplifier system
03/14/1995US5397978 Current limit circuit for IGBT spark drive applications
03/08/1995EP0642247A2 Loudspeaking device for telephone sets
03/08/1995CN1099918A Arrangement for duplex transmission
03/08/1995CN1027849C Reduce noise interference during handoff
03/08/1995CN1027848C Power amplifier ramp up method and apparatus
03/07/1995US5396652 Transmitting power control unit having a constant output level throughout a predetermined frequency band
03/07/1995US5396192 Radio frequency amplifier
03/07/1995CA2049101C Variable gain amplifier automatic gain control method and device and their application to a tuner gain control, for a videocommunication network especially
03/07/1995CA1334682C Noise blanker with continuous wave interference compensation
03/02/1995WO1995006354A1 Radio transmitter with power amplifier linearizer
03/01/1995EP0659288A4 Low cost controller.
03/01/1995EP0641070A1 Method and circuit for the adjustment of the level of sound sources in accordance with the ambient noise level
03/01/1995EP0640974A2 Reference voltage generation circuit
03/01/1995EP0640257A1 Photodiode preamplifier with programmable gain amplification
03/01/1995CN1027781C Audio levet equalization of broadcast FM and narrow frequency deviation FM radio signals
02/1995
02/28/1995US5394476 Volume control device
02/28/1995US5394474 Echo attaching circuit and audio device using the same
02/28/1995US5394472 Monaural to stereo sound translation process and apparatus
02/28/1995US5394194 Gain control circuit and gradation correcting apparatus
02/28/1995US5394080 Universal signal converter using multiple current mirrors
02/23/1995WO1995005724A1 Spatial sound reproduction system
02/23/1995DE4327541A1 Verfahren zur automatischen Verstärkungsregelung in einem Empfänger A method for automatic gain control in a receiver
02/22/1995EP0639890A1 Directional detector for power level control
02/22/1995EP0331715B1 Automatic gain control system
02/22/1995CN1099207A An agc circuit for burst signal
02/21/1995US5392464 In a data transmission system
02/16/1995WO1995005029A1 Method and apparatus for controlling a peak envelope power of a pa
02/15/1995EP0638998A1 Fast-acting automatic gain control arrangement
02/15/1995EP0638997A1 Servo circuit
02/15/1995EP0638994A1 Transmitter and power amplifier therefor
02/15/1995EP0313650B1 Microwave absorber attenuator for linear sspa power control
02/14/1995US5390361 Method and a device for controlling a radio transmitter
02/14/1995US5390345 Method for preventing desensitization and radio interference of radio receivers
02/14/1995US5390053 Circuit for controlling the overall upper cutoff frequency of an amplifier stage
02/14/1995US5389896 HBT monolithic variable gain amplifier with bias compensation and buffering
02/14/1995US5389860 Focus control circuit for CRT
02/14/1995CA2048234C Audio dosage control system
02/12/1995CA2129567A1 Fast-acting automatic gain control arrangement
02/09/1995DE4326097A1 Circuit arrangement for short-term muting of playback in a broadcast receiver
02/08/1995CN1098574A Communication apparatus utilizing high power amplifier
02/08/1995CN1098539A Sound system gain and equalization circuit
02/07/1995US5387879 Gain controllable output buffer amplifier circuit having a reduced circuit area
02/07/1995US5387877 Voltage controlled attenuator for speakerphones
02/07/1995US5387875 For generating a pulse form drive signal
02/01/1995EP0637130A2 Receiver and method of receiving
02/01/1995EP0637129A2 Automatic amplitude control for a broad band transmitter
01/1995
01/31/1995US5386478 Sound system remote control with acoustic sensor
01/31/1995US5386109 Pre-amplifier for optical receiving and optical receiver using the same
01/30/1995CA2114341A1 Receiver with an agc circuit capable of expanding a dynamic range
01/26/1995WO1995002923A1 Method and apparatus for calibrating a gain control circuit
01/26/1995CA2167060A1 Method and apparatus for calibrating a gain control circuit
01/25/1995EP0635937A1 Circuit for controlling the overall upper cutoff frequency of an amplifier stage
01/25/1995EP0635936A2 Communication system using time-multiplex signals
01/25/1995EP0635935A1 Booster and burst transmission apparatus using the same
01/25/1995EP0513241B1 Sigma delta modulator
01/24/1995US5384547 Apparatus and method for attenuating a multicarrier input signal of a linear device
01/19/1995WO1995002278A1 Automatic transimpedance control amplifier
01/18/1995CN1097531A Communications receiver with an adaptive squelch system
01/18/1995CN1097530A RF amplifier with signal-level control, and radio transmitter equipped therewith
01/17/1995US5382920 Circuit arrangement for an optical receiver
01/17/1995US5382786 Integrated photodetector with moving destination circuit
01/17/1995CA2024594C Transmission power control circuit
01/12/1995WO1995001676A1 Radio frequency amplifier with variable gain control
01/12/1995DE4323014A1 Active receiving antenna having an active signal path and a passive signal path
01/11/1995EP0633658A2 Voice activated transmission coupled AGC circuit
01/11/1995EP0632941A1 Optical receiver
01/10/1995US5381148 Method and apparatus for calibrating a gain control circuit
01/10/1995US5381115 Method and apparatus for regulating output power of signal amplifier