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Class Information
Number: 330/277
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including field effect transistor
Description: Subject matter wherein a field effect transistor (FET) is utilized in the amplifier circuit.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Patent Number Title Of Patent Date Issued
5349304 Operational amplifier having multiple positive inputs Sep. 20, 1994
5349306 Apparatus and method for high performance wide-band power amplifier monolithic microwave integrated circuits Sep. 20, 1994
5345191 Broad-band amplifier Sep. 6, 1994
5343172 Variable reactance circuit for microwave or millimeter wave band and variable matching circuit using variable reactance circuit Aug. 30, 1994
5341333 Circuits and methods for amplification of electrical signals Aug. 23, 1994
5339046 Temperature compensated variable gain amplifier Aug. 16, 1994
5337019 Integrated circuit arrangement Aug. 9, 1994
5323123 Integrated circuit having a variable-gain amplifier Jun. 21, 1994
5319318 Gain control circuit and semiconductor device Jun. 7, 1994
5317282 Tetrode biasing circuit May. 31, 1994
5317280 High impedance circuit using PFET May. 31, 1994
5315265 Low intermodulation distortion FET amplifier using parasitic resonant matching May. 24, 1994
5305469 Modem for telecommunication system with a reflection amplifier function Apr. 19, 1994
5298869 Constant current and constant voltage regulating circuit for common-gate or common-base transistor devices Mar. 29, 1994
5285171 High output impedance amplifier Feb. 8, 1994
5278517 FET amplifier with gate voltage control Jan. 11, 1994
5276406 Low noise wide dynamic range amplifiers Jan. 4, 1994
5274341 High-frequency power amplifier Dec. 28, 1993
5274339 Gain compensation circuit Dec. 28, 1993
5272456 High-frequency bias supply circuit Dec. 21, 1993
5270668 Semiconductor amplifier Dec. 14, 1993
5270667 Impedance matching and bias feed network Dec. 14, 1993
5268648 Field emitting drain field effect transistor Dec. 7, 1993
5250912 RF power amplifier Oct. 5, 1993
5248950 High frequency signal processing apparatus with biasing arrangement Sep. 28, 1993
5237289 MOSFET controlling multiplier Aug. 17, 1993
5235289 Transmission power amplifier device Aug. 10, 1993
5233313 High power field effect transistor amplifier Aug. 3, 1993
5233310 Microwave integrated circuit Aug. 3, 1993
5229732 High frequency amplifier having stable amplification operation Jul. 20, 1993
5227734 Broadband bipolar transistor distributed amplifier Jul. 13, 1993
5221908 Wideband integrated distortion equalizer Jun. 22, 1993
5216383 Controllable amplifier circuit Jun. 1, 1993
5210508 High-frequency amplifier of a radio transmitter May. 11, 1993
5208547 Distributed amplifier having negative feedback May. 4, 1993
5202907 Solid-state image sensor output MOSFET amplifier with MOSFET load Apr. 13, 1993
5202649 Microwave integrated circuit device having impedance matching Apr. 13, 1993
5198782 Low distortion amplifier output stage for DAC Mar. 30, 1993
5196805 Distributed differential amplifier arrangement Mar. 23, 1993
5192920 High-sensitivity, low-noise transistor amplifier Mar. 9, 1993
5191297 Transconductance amplifier having sensfets which drive a load with linearly proportional current Mar. 2, 1993
5191338 Wideband transmission-mode FET linearizer Mar. 2, 1993
5177381 Distributed logarithmic amplifier and method Jan. 5, 1993
5177452 Stabilized circuit of high output power transistor for microwave and milliwave Jan. 5, 1993
5172074 Low noise multi-stage type amplifier Dec. 15, 1992
5166640 Two dimensional distributed amplifier having multiple phase shifted outputs Nov. 24, 1992
5165054 Circuits for linear conversion between currents and voltages Nov. 17, 1992
5162735 Operational amplifier circuit with improved gain of feedback loop Nov. 10, 1992
5162748 Switchable FET distortion generator Nov. 10, 1992
5162754 Ultra-wideband dc-microwave amplifier device notably in integrated circuit form Nov. 10, 1992

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