Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
10/1979
10/03/1979EP0004418A2 Circuit for inhibiting the operation of a noise blanker circuit
10/02/1979US4170023 Carrier agc circuit, especially burst acc and apc
10/02/1979CA1063717A1 Programmable binary amplifier
09/1979
09/25/1979US4169247 Gain control circuit in combination with a differential amplifier
09/25/1979CA1063247A1 Digital automatic gain control circuit
09/25/1979CA1063179A1 Radio receiver having a preselection circuit tuned by a varactor
09/18/1979US4168472 Variable gain controller
09/18/1979US4168399 Paging encoder system utilizing a telephone line link
09/11/1979US4167705 Circuit for controlling the response conditions of a radio receiver
09/11/1979CA1062168A1 Audio frequency automatic muting arrangements
08/1979
08/22/1979EP0003588A1 Method and assembly circuit for suppressing interference signals from a signal to be measured
08/22/1979EP0003509A1 Gain control circuit for a plurality of cascade-coupled amplifying stages
08/21/1979US4165493 Protected amplifier apparatus
08/21/1979CA1060955A1 Automatic gain control means for a single sideband radio receiver
08/07/1979CA1060101A1 Fm demodulator having squelch circuit using bucket brigade delay line
07/1979
07/31/1979US4163203 Tuning apparatus for selecting preset broadcast frequencies
07/17/1979US4161628 Technique for tracking amplitude fades for multi-amplitude signalling
07/11/1979EP0002972A1 Amplifier device with self adaptive dynamic range and receiver using such a device
07/10/1979US4161029 Automatic transient response analyzer system
07/03/1979CA1057824A1 Keyed classical agc system
06/1979
06/26/1979US4159523 Voltage offset network
06/19/1979US4158820 Low level preamplifier circuit
06/19/1979US4158819 Instantaneous floating point amplifier
06/19/1979US4158814 Automatic overload protection system
06/19/1979CA1056919A1 Automatic compensating circuit
06/12/1979US4158180 Temperature control circuit
06/12/1979US4158179 Amplifier circuit
06/12/1979CA1056490A1 Digital recording of sonic log wavetrains
06/05/1979US4157569 Television receiver having a synchronous detection circuit and a frequency deviation-detection circuit to achieve a wide frequency range control function
06/05/1979US4157455 FM stereophonic receiver having muting and mode changing
05/1979
05/29/1979US4156867 Data communication system with random and burst error protection and correction
05/29/1979US4156848 High dynamic range detector for indicating the quieting level of an FM receiver
05/22/1979US4156202 Impulsive noise reducing system
05/22/1979US4156195 Receiver having a phase-locked loop
05/15/1979US4155048 Automatic gain control circuit
05/15/1979US4155047 Voltage controlled attenuator
05/15/1979US4155041 System for reducing noise transients
05/15/1979US4154980 Noise blanker with variable rate-shut-off and/or variable blanking threshold level
05/15/1979CA1054711A1 Limiter circuit
05/15/1979CA1054686A1 Fast automatic gain control circuit with adjustable range
05/08/1979US4153879 Shock muting circuit for use in an AM receiver
05/08/1979US4153878 Sectored antenna communications receiver with squelch circuit
05/08/1979US4153049 Apparatus for maintaining signals within a given amplitude range
05/01/1979US4152667 Gain-controlled signal amplifier
05/01/1979US4152664 Constant power balance control and method
04/1979
04/24/1979US4151481 Digital gain control system
04/24/1979US4151478 Nonlinearly variable gain apparatus
04/24/1979US4151477 Tone control circuit
04/24/1979US4151471 System for reducing noise transients
04/24/1979CA1053333A1 Measuring circuit
04/17/1979US4150336 AM/FM Intermediate frequency gain stage
04/10/1979US4149157 Receiver for a HF-intrusion detection system
04/10/1979US4149123 Attenuator
04/10/1979US4149036 Crosstalk compensating circuit
04/03/1979US4147991 Automatic gain control apparatus
03/1979
03/27/1979US4146842 Noise muting circuit in fm receiver
03/20/1979US4145665 Regulating amplifier
03/13/1979US4144533 Automatic gain control circuit for a pulsed radar
03/13/1979US4144500 Noise elimination for FM demodulators
03/13/1979US4144499 Search circuit for a radio receiver
03/06/1979US4143333 Impulse noise removing apparatus
03/06/1979US4143331 Summing amplifier for developing a squelch and meter voltage in a radio receiver
03/06/1979US4143325 Constant amplitude interference squelch system
03/06/1979US4143245 Constant distortion volume control
03/06/1979CA1050151A1 Method and apparatus for setting an aural prosthesis to provide specific auditory deficiency corrections
02/1979
02/20/1979US4140960 Current control circuit
02/20/1979US4140874 Automatic compensating circuit
02/13/1979US4139824 Gain control circuit
02/06/1979US4138646 Wideband absolute calibration system
02/06/1979US4138645 Wideband signal calibration system
02/06/1979CA1048114A1 Amplifier arrangement linearised by automatic correction
02/06/1979CA1048108A1 Fm receiver with detector for multi-path reception
01/1979
01/30/1979US4137466 Controllable electronic resistance device
01/23/1979US4136364 Multi-state wow and flutter reduction system and method
01/23/1979US4135590 Noise suppressor system
01/16/1979US4135159 Apparatus for suppressing a strong electrical signal
01/16/1979CA1046633A1 Transient suppression for tape player integrated circuit preamplifier
01/09/1979US4134079 Automatic gain control circuit for sound motion picture camera
01/09/1979US4134078 Gain control circuit
01/02/1979US4132963 Gain controlled signal amplifier
01/02/1979US4132954 Noise suppression circuit adapted for use with bifilar windings
01/02/1979US4132953 Squelch circuit for a radio receiver
12/1978
12/26/1978US4131809 Symmetrical arrangement for forming a variable alternating-current resistance
12/26/1978CA1045216A1 Automatic gain control for transducer circuit
12/26/1978CA1045044A1 Audio agc amplifier
12/19/1978US4130805 Noise clearing system
12/19/1978CA1044765A1 Broadcast receiver
12/05/1978US4128810 Signal level indicator driving circuit
12/05/1978CA1043873A1 Detecting circuit
11/1978
11/28/1978US4127813 Method for balancing the sensitivity of two channels in a differential detection apparatus
11/21/1978US4126828 Intermodulation antiinterference device for superheterodyne receiver
11/07/1978US4124825 Signal level stabilizer
11/07/1978US4124780 FM stereophonic receiver providing a test signal
10/1978
10/31/1978US4123718 SSMA receiver with synchronous demodulation and variable gain control
10/31/1978CA1041654A1 Multiplexer commutated high pass filter
10/24/1978US4122400 Amplifier protection circuit
10/24/1978CA1041234A1 Receiver for electric oscillations modulated by ssma technique
10/24/1978CA1041216A1 Automatic gain control
10/17/1978US4121183 Programmable attenuator apparatus employing active FET switching
10/17/1978US4121161 AM receiver