H03G 3 - Gain control in amplifiers or frequency changers

Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
01/1993
01/05/1993	US5177453 Gain control amplifier
12/1992
12/30/1992	CN1067537A Power amplifier saturation detection and correction method and apparatus
12/30/1992	CN1067536A Power amplifier ramp up method and apparatus
12/29/1992	US5175883 Receiving apparatus
12/29/1992	US5175882 Demodulation control arrangement in satelitte communications system using "scpc-dama"
12/23/1992	EP0519805A1 Detection of the voltage between phases in an alternator-regulator
12/17/1992	DE4121400C1 Regulating amplification of avalanche diode in optical preamplifier - setting bias from signal derived from comparison of stipulated value and signal derived from noise voltage at output when no optical signal is at input
12/16/1992	CN1067143A Dynamic range enhancer
12/15/1992	US5172071 Linearized output control of a nonlinear amplifier
12/15/1992	CA1311422C Circuit and method for providing a light energy response to an event in real time
12/10/1992	WO1992022143A1 Power control circuitry for achieving wide dynamic range in a transmitter
12/10/1992	DE3250029C2 Receiver input stage
12/09/1992	EP0517599A1 Broadband amplifier with automatic control of the gain and the offset
12/09/1992	EP0517305A1 Logarithmic amplifier and detector
12/09/1992	CN1066947A Amplitude control of burst signal in receiver
12/08/1992	US5170495 Controlling clipping in a microwave power amplifier
12/08/1992	US5170489 For use in a communication device
12/08/1992	US5170437 Audio signal energy level detection method and apparatus
12/08/1992	US5170392 Intermodulation compensation in a receiver
12/08/1992	CA2070611A1 Automatic gain and offset voltage control wideband amplifier circuit
12/04/1992	WO1992022135A1 Power amplifier ramp up method and apparatus
12/04/1992	WO1992022134A1 Power amplifier
12/04/1992	WO1992022133A1 Power amplifier saturation detection and correction method and apparatus
12/02/1992	EP0516453A1 Control of a power amplifier, particularly in a portable telephone
12/02/1992	EP0516220A2 Electroacoustic amplifier arrangement and microphone arrangement to be used in the electroacoustic amplifier arrangement
12/02/1992	EP0506708A4 Method and apparatus for random fm noise cancellation
12/01/1992	US5168510 Spread spectrum-time diversity communications systems and transceivers for multidrop area networks
12/01/1992	US5168505 Automatic gain control device for spread spectrum communication device
11/1992
11/29/1992	WO1992022157A1 Power control of a direct sequence cdma radio
11/26/1992	WO1992021200A1 Apparatus and method for reducing errors in data caused by noise
11/26/1992	WO1992021179A1 Dynamic range enhancer
11/26/1992	CA2109587A1 Dynamic range enhancer
11/25/1992	EP0514974A1 Controllable amplifier circuit
11/25/1992	EP0514818A1 Programmable amplifier
11/25/1992	EP0514655A1 Semiconductor device for TV tuner and TV tuner using the same
11/25/1992	EP0514592A1 A detector of pulsed light signals, particularly for protection barriers and infrared remote controls
11/25/1992	EP0500700A4 High fidelity hearing aid amplifier
11/25/1992	CN1066553A Plural time constant signal control
11/25/1992	CN1066552A Audio system with transient tracking dual voltage power supply
11/25/1992	CN1066551A Audio level equalization of television sound, broadcast fm and national weather service fm radio signals
11/25/1992	CN1066540A Control system including switching circuit for ensuring proper operation when operating power is removed from portion of control system
11/25/1992	CN1066539A Common bias circuit for plurality of discrete ic's each having their own bias circuitry
11/25/1992	CA2069123A1 Programmable amplifying device
11/24/1992	US5166983 Mute circuit for audio amplifiers
11/24/1992	US5166559 Servo circuit having variable gain amplifier and temperature compensation characteristics
11/24/1992	CA1310713C Signal feedback amplifier for a cable-tv converter
11/19/1992	EP0513241A1 Sigma delta modulator.
11/17/1992	US5164830 Audio level equalization of television sound, broadcast fm and national weather service fm radio signals
11/17/1992	US5164680 Circuit and method of controlling the gain of an amplifier based on the output frequency thereof
11/17/1992	CA1310377C Rf power-control circuit
11/11/1992	EP0512376A2 Plural time constant signal control
11/11/1992	EP0512374A1 Audio level equalization of television sound, broadcast FM and national weather service FM radio signals
11/11/1992	EP0511989A1 Amplitude locked loop circuits.
11/10/1992	US5162678 Temperature compensation control circuit for exponential gain function of an agc amplifier
11/04/1992	WO1992020163A1 Transmitter filter with integral directional coupler for cellular telephones
11/03/1992	US5161185 Method and apparatus for reducing noise in a digital voltage signal
11/03/1992	US5161170 System for processing an input signal
11/03/1992	US5160898 Power amplifier
11/03/1992	CA1309775C Apparatus for synthesizing analog signals in pcm
10/1992
10/29/1992	WO1992018943A1 Automation control with improved operator/system interface
10/28/1992	EP0510976A2 Level independent automatic cable equalizer
10/28/1992	CN1065763A Intermodulation compensation in receiver
10/27/1992	US5159283 Power amplifier
10/27/1992	CA2063350A1 Level independent automatic cable equalizer
10/21/1992	EP0509733A2 Radio-frequency power amplifier device
10/21/1992	CN1018784B Differential amplifier using voltage level shifting to achieve rail-to-rail input capability at very low power supply voltage
10/20/1992	US5157353 Audio system with transient tracking dual voltage power supply
10/20/1992	US5157348 Smart programmable gain amplifier
10/20/1992	US5157346 Rf wideband high power amplifier
10/14/1992	EP0507964A1 Electronic volume device
10/14/1992	EP0507919A1 Controlled slew rate amplifier
10/14/1992	EP0489081A4 Gain/phase compensation for linear amplifier feedback loop
10/11/1992	WO1992019077A1 Reduced noise interference during handoff
10/07/1992	EP0507394A2 Optical transmitter
10/07/1992	EP0507311A2 High frequency amplifying apparatus
10/07/1992	EP0506708A1 Method and apparatus for random fm noise cancellation.
10/06/1992	US5153528 Gain control type amplifying apparatus
10/02/1992	WO1992017944A1 Apparatus and method of automatic gain control in a receiver
10/01/1992	DE4110775A1 CB radio with reduced interference between closely spaced stations - controls operating voltage or operating current to regulate power output
09/1992
09/30/1992	EP0506547A1 Device for the automatic control of a signal level
09/30/1992	EP0506055A2 An emphasis apparatus
09/29/1992	US5152007 Method and apparatus for detecting speech
09/29/1992	US5152004 Procedure for forming low power levels in a radio telephone transmitter
09/29/1992	US5151942 Circuit for muting noises for an audio amplifier
09/29/1992	US5151922 Variable speaker muting based on received data
09/29/1992	US5151680 Speaker driver
09/29/1992	US5151669 Dual-gate fet attenuator controlled by a variable load circuit
09/22/1992	US5150416 Electronic level control circuit for sound signals
09/22/1992	US5150415 Volume control circuit using pulse modulation
09/22/1992	US5150075 Power amplifier ramp up method and apparatus
09/17/1992	WO1992016059A1 A method and a device for controlling a radio transmitter
09/17/1992	WO1992016058A1 A method and a device for controlling a radio transmitter
09/16/1992	EP0503718A1 Power amplifier and transmitting apparatus including such a power amplifier
09/16/1992	EP0503154A2 RDS receiver
09/15/1992	US5148491 Automatic mixer apparatus
09/08/1992	US5146504 Speech selective automatic gain control
09/08/1992	US5146501 Altitude-sensitive portable stereo sound set for dancers
09/08/1992	US5146476 High gain amplifier for reception of low level pulse code modulation nonreturn-to-zero signals
09/08/1992	US5146338 Fixed rf agc of a television tuner for fm reception in a television receiver
09/08/1992	US5146180 Variable gain amplifier

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