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Class Information
Number: 330/269
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including push-pull amplifier > Having field effect transistor
Description: Subject matter wherein a field effect transistor (FET) is utilized in the circuit.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8688055 Push-pull low-noise amplifier with area-efficient implementation Apr. 1, 2014
8665024 Control of minimum current in output transistors of an amplifier output stage Mar. 4, 2014
8653894 Push-pull amplifier having inductive common mode decoupling Feb. 18, 2014
8536948 Power amplifier Sep. 17, 2013
8405460 Circuitry for biasing amplifiers Mar. 26, 2013
8400220 Quiescent current control for class AB output stages Mar. 19, 2013
8368789 Systems and methods to provide reference current with negative temperature coefficient Feb. 5, 2013
8346179 Push-pull low-noise amplifier with area-efficient implementation Jan. 1, 2013
8279001 Push-pull linear hybrid class H amplifier Oct. 2, 2012
8279005 Amplifier circuit Oct. 2, 2012
8242843 Push-pull amplifier circuit and operational amplifier circuit using the same Aug. 14, 2012
8072270 CMOS RF power amplifier with LDMOS bias circuit for large supply voltages Dec. 6, 2011
8031003 Solid-state RF power amplifier for radio transmitters Oct. 4, 2011
7804357 Distributed amplifier Sep. 28, 2010
7755428 Amplifying circuit Jul. 13, 2010
7737784 Self configuring output stages of precision amplifiers Jun. 15, 2010
7683718 Solid-state RF power amplifier for radio transmitters Mar. 23, 2010
7659756 MOSFET transistor amplifier with controlled output current Feb. 9, 2010
7471151 Circuits for quiescent current control Dec. 30, 2008
7466201 Class AB output stage and method for providing wide supply voltage range Dec. 16, 2008
7346318 High frequency power amplifier component and radio communication system Mar. 18, 2008
7342448 Power output stage Mar. 11, 2008
7271655 Power amplifier end stage Sep. 18, 2007
7248115 Differential amplifier operable in wide range Jul. 24, 2007
7215201 Integrated circuit having a low power, gain-enhanced, low noise amplifying circuit May. 8, 2007
7212070 Circuit and method of reducing noise in an RF power amplifier May. 1, 2007
7161431 Class B amplifier with process variation independent deadband Jan. 9, 2007
7154332 Differential amplifier, data driver and display device Dec. 26, 2006
7145392 Methods and apparatus for variable harmonic distortion Dec. 5, 2006
7145393 Operational amplifier with class-AB+B output stage Dec. 5, 2006
7119616 Method and apparatus for a fully differential amplifier output stage Oct. 10, 2006
6999740 Semiconductor integrated circuit and radio communication apparatus using same Feb. 14, 2006
6930551 Zero voltage class AB minimal delay output stage and method Aug. 16, 2005
6927633 High frequency circuit with thin film resistor Aug. 9, 2005
6911866 Method and device for switch-on current limiting in push-pull amplifying power stages Jun. 28, 2005
6909327 Amplifier Jun. 21, 2005
6794942 Electrical circuits Sep. 21, 2004
6788147 Operational amplifier with class-AB+B output stage Sep. 7, 2004
6759903 Amplifier Jul. 6, 2004
6696895 Push-pull amplifier Feb. 24, 2004
6636111 Bootstrap circuit to cancel input bias currents of a differential amplifier over most of common-mode input voltage range Oct. 21, 2003
6501252 Power supply circuit Dec. 31, 2002
6462620 RF power amplifier circuitry and method for amplifying signals Oct. 8, 2002
6384675 Differencing non-overlapped dual-output amplifier circuit May. 7, 2002
6369653 Apparatus and methods for improved control of quiescent state of output transistors in a class AB amplifier Apr. 9, 2002
6268771 Amplifying device Jul. 31, 2001
6194774 Inductor including bonding wires Feb. 27, 2001
6144257 Bus control buffer amplifier Nov. 7, 2000
6144256 Wide bandwidth, current sharing, Mosfet audio power amplifier with multiple feedback loops Nov. 7, 2000
6137273 Circuit for supplying a high precision current to an external element Oct. 24, 2000

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