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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
6954106 FET band amplifier Oct. 11, 2005
6934520 CMOS current mode RF detector and method Aug. 23, 2005
6930552 FET band amplifier Aug. 16, 2005
6927629 Differential amplifier having improved balanced and linearity Aug. 9, 2005
6911866 Method and device for switch-on current limiting in push-pull amplifying power stages Jun. 28, 2005
6906591 Amplifier having MOS capacitor compensation Jun. 14, 2005
6906590 FET amplifier with temperature-compensating circuit Jun. 14, 2005
6897728 High frequency power amplifier module and wireless communication system May. 24, 2005
6895225 System for matching an antenna for a wireless communication device May. 17, 2005
6888408 Preamplifier for two terminal electret condenser microphones May. 3, 2005
6867651 MMIC driver amplifier having zig-zag RF signal flow Mar. 15, 2005
6861905 Power amplifier system and mobile communication terminal device Mar. 1, 2005
6853247 Methods and apparatus for using Taylor series expansion concepts to substantially reduce nonlinear distortion Feb. 8, 2005
6850116 Accurate, high drive, zero offset voltage buffer Feb. 1, 2005
6850117 CMOS transceiver having an integrated power amplifier Feb. 1, 2005
6832077 Microwave isolator Dec. 14, 2004
6828858 CMOS class AB power amplifier with cancellation of nonlinearity due to change in gate capacitance of a NMOS input transistor with switching Dec. 7, 2004
6828862 RF power amplifier with low intermodulation distortion and reduced memory effect Dec. 7, 2004
6816010 Transimpedance amplifier Nov. 9, 2004
6816011 RF power amplifier and method for packaging the same Nov. 9, 2004
6812794 Multistage amplifier Nov. 2, 2004
6801088 Dual gate low noise amplifier Oct. 5, 2004
6788136 Methods and apparatus for amplification in high temperature environments Sep. 7, 2004
6788141 Power amplifier circuitry and method Sep. 7, 2004
6750698 Cascade circuits utilizing normally-off junction field effect transistors for low on-resistance and low voltage applications Jun. 15, 2004
6730945 Semiconductor device May. 4, 2004
6727758 Fast cascaded class AB bipolar output stage Apr. 27, 2004
6724253 Predistortion type linearizer controlled by two control voltages Apr. 20, 2004
RE38482 Delay stage circuitry for a ring oscillator Mar. 30, 2004
6710716 Power detecting circuit and demodulator comprising the same Mar. 23, 2004
6680650 MOSFET well biasing scheme that migrates body effect Jan. 20, 2004
6664855 MMIC driver amplifier having zig-zag RF signal flow Dec. 16, 2003
6661289 Voltage-to-current conversion circuit and OTA using the same Dec. 9, 2003
6657497 Asymmetric, voltage optimized, wideband common-gate bi-directional MMIC amplifier Dec. 2, 2003
6653903 Supply voltage decoupling device for HF amplifier circuits Nov. 25, 2003
6642794 Noise and input impedance matched amplifier Nov. 4, 2003
6639393 Methods and apparatus for time-domain measurement with a high frequency circuit analyzer Oct. 28, 2003
6617927 High frequency power amplifier module, and wireless communications system Sep. 9, 2003
6611680 Radio architecture Aug. 26, 2003
6606001 High-speed current-mirror circuitry and method of operating the same Aug. 12, 2003
6587001 Analog load driver Jul. 1, 2003
6586990 Operational amplifier having offset cancel function Jul. 1, 2003
6583670 CMOS current amplifier Jun. 24, 2003
6583673 Stability enhanced multistage power amplifier Jun. 24, 2003
6580326 High-bandwidth low-voltage gain cell and voltage follower having an enhanced transconductance Jun. 17, 2003
6570450 Efficient AC coupled CMOS RF amplifier May. 27, 2003
6566953 High-frequency amplifier circuit for UHF television tuner having less distortion May. 20, 2003
6552324 Selectable pixel amplifier for use in a photosensor array Apr. 22, 2003
6549071 Power amplifier circuitry and method using an inductance coupled to power amplifier switching devices Apr. 15, 2003
6522194 Envelope restoration scheme for linear high-efficiency power amplification Feb. 18, 2003

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