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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
8704585 Method for forming an electric signal representing a sound and a device therefor Apr. 22, 2014
8669815 Amplifier, apparatus and method for controlling amplifier in communication system Mar. 11, 2014
8660485 Near field communication device Feb. 25, 2014
8644759 Offset cancellation for DC isolated nodes Feb. 4, 2014
8643438 Class-AB power amplifier Feb. 4, 2014
8624674 Output stage of a class-A amplifier Jan. 7, 2014
8624676 Broadband transistor bias network Jan. 7, 2014
8614603 Auto leveling receiver Dec. 24, 2013
8604883 Class-C power amplifier Dec. 10, 2013
8604880 Buffering apparatus and method Dec. 10, 2013
8593225 Hybrid class amplifier Nov. 26, 2013
8588433 Electret microphone circuit Nov. 19, 2013
8577325 Low noise amplifier having both ultra-high linearity and low noise characteristic and radio receiver including the same Nov. 5, 2013
8571496 Semiconductor device for signal amplification Oct. 29, 2013
8564370 Error amplifier and LED circuit comprising the same Oct. 22, 2013
8558619 Silicon-on-insulator high power amplifiers Oct. 15, 2013
8554162 High efficiency power amplifier Oct. 8, 2013
8525594 Radio frequency amplifier circuit Sep. 3, 2013
8509629 High sensitivity two-stage amplifier Aug. 13, 2013
8487702 Transimpedance amplifier and method thereof Jul. 16, 2013
8456239 Amplifying unit, power amplifier and transmitter Jun. 4, 2013
8451058 Amplifier bandwidth extension for high-speed tranceivers May. 28, 2013
8416023 System and method for compensating for changes in an output impedance of a power amplifier Apr. 9, 2013
8400222 Electronic circuits including a MOSFET and a dual-gate JFET Mar. 19, 2013
8373508 Power amplifier Feb. 12, 2013
8368468 Error amplifier and LED circuit comprising the same Feb. 5, 2013
8368469 Silicon-on-insulator high power amplifiers Feb. 5, 2013
8358173 CMOS power amplifier Jan. 22, 2013
8324555 Nanoelectronic differential amplifiers and related circuits implemented on a segment of a graphene nanoribbon Dec. 4, 2012
8320854 Semiconductor device for signal amplification Nov. 27, 2012
8314659 Controlling amplifier input impedance Nov. 20, 2012
8305147 Power amplifier Nov. 6, 2012
8294521 Power amplifier having depletion mode high electron mobility transistor Oct. 23, 2012
8279006 Low noise amplifier Oct. 2, 2012
8279013 Power amplifier and MMIC using the same Oct. 2, 2012
8274330 Power amplifier circuitry and method Sep. 25, 2012
8270846 Amplification circuit, differential amplification circuit, and optical transmitter Sep. 18, 2012
8253485 Power amplifier Aug. 28, 2012
8253492 Variable gain amplifier Aug. 28, 2012
8243956 Auto bias microphone system for use with multiple loads and method of forming same Aug. 14, 2012
8242844 LNA circuit for use in a low-cost receiver circuit Aug. 14, 2012
8190099 Switch-less bidirectional amplifier May. 29, 2012
8179197 Electronic circuits including a MOSFET and a dual-gate JFET May. 15, 2012
8179196 High voltage amplification using low breakdown voltage devices May. 15, 2012
8174319 Amplifier May. 8, 2012
8154357 Modulation for amplitude-modulating a signal Apr. 10, 2012
8095092 Power efficient transmitter with high dynamic range Jan. 10, 2012
8058909 Transconductance amplifier Nov. 15, 2011
8054135 Class-E amplifier and lighting ballast using the amplifier Nov. 8, 2011
8018284 Method of using integrated power amplifier Sep. 13, 2011

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