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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
6023194 Amplifier with reduced input capacitance Feb. 8, 2000
6023195 On-chip source follower amplifier Feb. 8, 2000
6002301 Transistor and power amplifier Dec. 14, 1999
5998817 High power prematched MMIC transistor with improved ground potential continuity Dec. 7, 1999
5994963 Amplifier circuit and multistage amplifier circuit Nov. 30, 1999
5990744 Wide band process independent gain controllable amplifier stage Nov. 23, 1999
5990745 Discharge element for charge-integrating preamplifier Nov. 23, 1999
5986503 Power amplifier with an idle current trimmed and a method of trimming the power amplifier Nov. 16, 1999
5977832 Method of biasing an MOS IC to operate at the zero temperature coefficient point Nov. 2, 1999
5977830 Low noise transistor module and amplifier Nov. 2, 1999
5977823 Semiconductor amplifier circuit Nov. 2, 1999
5973368 Monolithic class D amplifier Oct. 26, 1999
5973567 Tunable impedance matching network for a mic power amplifier module Oct. 26, 1999
5973565 DC bias feedback circuit for MESFET bias stability Oct. 26, 1999
5949287 Power amplifier Sep. 7, 1999
5942943 Electrical power amplifier device Aug. 24, 1999
5939941 High efficiency power amplifier using HITFET driver circuit Aug. 17, 1999
5939945 Amplifier with neuron MOS transistors Aug. 17, 1999
5920230 HEMT-HBT cascode distributed amplifier Jul. 6, 1999
5892400 Amplifier using a single polarity power supply and including depletion mode FET and negative voltage generator Apr. 6, 1999
5892401 Solid state power amplifier with low distortion noise protection limiter Apr. 6, 1999
5880640 Distributed amplifier for wide band hyperfrequency signals Mar. 9, 1999
5878331 Integrated circuit Mar. 2, 1999
5874859 High-frequency amplifier integrated-circuit device Feb. 23, 1999
5872484 High performance current output amplifier for CCD image sensors Feb. 16, 1999
5861779 Impedance circuit for a miniature hearing aid Jan. 19, 1999
5847608 Amplifier circuit operating with single bias supply and less sensitive to fluctuation of threshold Dec. 8, 1998
5844265 Sense amplifier for high-density imaging array Dec. 1, 1998
5831476 Voltage-tuned millimeter-wave amplifier and method for tuning Nov. 3, 1998
5825249 Multistage source follower amplifier having a wide bandwidth and low power consumption Oct. 20, 1998
5821814 Negative feedback amplifier Oct. 13, 1998
5821813 Bidirectional amplifier Oct. 13, 1998
5815038 Distortion compensation circuit Sep. 29, 1998
5808515 Semiconductor amplifying circuit having improved bias circuit for supplying a bias voltage to an amplifying FET Sep. 15, 1998
5799051 Delay stage circuitry for a ring oscillator Aug. 25, 1998
5789983 High-frequency amplifier having variable gain in response to input power level Aug. 4, 1998
5777517 Semiconductor feedback amplifier having improved frequency characteristics Jul. 7, 1998
5777516 High frequency amplifier in CMOS Jul. 7, 1998
5777518 Method of biasing mosfet amplifiers for constant transconductance Jul. 7, 1998
5771470 Control of a power amplifier stage of a portable transceiver Jun. 23, 1998
5767756 Active quadrature power splitter Jun. 16, 1998
5757235 Metal semiconductor field effect transistor of source-ground type May. 26, 1998
5757236 Amplifier bias circuit and method May. 26, 1998
5748042 Method for altering a difference frequency signal and amplifier circuit thereof May. 5, 1998
5745009 Semiconductor device including a power amplifier and a mobile telecommunication terminal including such a semiconductor device Apr. 28, 1998
5736901 Radio frequency amplifier with stable operation and restrained oscillation at low frequencies Apr. 7, 1998
5724004 Voltage bias and temperature compensation circuit for radio frequency power amplifier Mar. 3, 1998
5721516 CMOS inverter Feb. 24, 1998
5705824 Field controlled current modulators based on tunable barrier strengths Jan. 6, 1998
5703534 Operational transconductance amplifier with good linearity Dec. 30, 1997

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