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Class Information
Number: 330/134
Name: Amplifiers > With control of power supply or bias voltage > With control of input electrode or gain control electrode bias > Plural different bias control voltages provided by separate means
Description: Subject matter including at least two separate and distinct bias voltage control means as therein defined, wherein the control voltages are applied to input or gain control electrodes, and which may be applied to a single amplifying device or to more than one amplifying device.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
5283533 Amplifier signal level detector for a mobile communication system Feb. 1, 1994
5252929 RF power amplifier Oct. 12, 1993
5216379 Dynamic bias amplifier Jun. 1, 1993
5216384 Programmable amplifier device Jun. 1, 1993
5179353 Power control circuit used for both analog/digital dual mode Jan. 12, 1993
5172071 Linearized output control of a nonlinear amplifier Dec. 15, 1992
5168148 Automatic gain control circuit Dec. 1, 1992
5136257 RF amplifier bias circuit Aug. 4, 1992
5126688 Power amplifying apparatus for wireless transmitter Jun. 30, 1992
5126686 RF amplifier system having multiple selectable power output levels Jun. 30, 1992
5101176 Burst control circuit for use in TDMA communications system Mar. 31, 1992
5015921 Soft start solid state switch May. 14, 1991
4994757 Efficiency improvement of power amplifiers Feb. 19, 1991
4873493 Audio amplifier Oct. 10, 1989
4870370 Method and apparatus for two stage automatic gain control Sep. 26, 1989
4870369 Circuit arrangement having a pre-amplifier connected to an opto-electric transducer Sep. 26, 1989
4646036 Signal attenuation circuit Feb. 24, 1987
4637073 Transmit/receive switch Jan. 13, 1987
4574248 RF Power amplifier for use with VHF transceivers Mar. 4, 1986
4521738 Gain control circuit Jun. 4, 1985
4514703 Automatic level control system Apr. 30, 1985
4459557 Compressor limiter for audio signal processing Jul. 10, 1984
4451797 AGC Controller for pulsed system May. 29, 1984
4422049 Gain control circuit Dec. 20, 1983
4380737 Fast AGC slew circuit Apr. 19, 1983
4307348 Automatic gain control circuit Dec. 22, 1981
4286492 Control for electronic amplifiers Sep. 1, 1981
4246543 Delayed AGC circuit Jan. 20, 1981
4223274 Amplifier for electrical signals Sep. 16, 1980
4219780 Gain controlled amplifier circuits Aug. 26, 1980
4213097 Hybrid automatic gain control circuit Jul. 15, 1980
4210874 Gain control amplifier circuit Jul. 1, 1980
4204172 Automatic gain control device for a single-sideband receiver May. 20, 1980
4194164 Variable frequency sources Mar. 18, 1980
4156854 Differential amplifier balancing system May. 29, 1979
4101849 Adaptive filter Jul. 18, 1978
4101843 Automatic recording level control circuit with manual sensitivity compensating circuit Jul. 18, 1978
4061874 System for reproducing sound information Dec. 6, 1977
4053848 Circuit arrangement for combining high frequency power components Oct. 11, 1977
4019150 PA protection circuit for a single sideband radio Apr. 19, 1977
4016862 Echoscope for examination of objects Apr. 12, 1977
3978422 Broadband automatic gain control amplifier Aug. 31, 1976
3961361 Gain control arrangement useful in a television signal processing system Jun. 1, 1976
3940715 Distortion measurement system Feb. 24, 1976

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