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Class Information
Number: 330/294
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including signal feedback means > Having frequency-responsive means or phase-shift means in feedback path
Description: Subject matter having frequency-responsive means or phase-shift means in the feedback path that causes corresponding changes in amplifier gain.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8704598 Linear FET feedback amplifier Apr. 22, 2014
8688045 FM transmitter and non-FM receiver integrated on single chip Apr. 1, 2014
8653888 High-frequency signal amplifier Feb. 18, 2014
8644773 Multiband low noise amplifier (LNA) with parallel resonant feedback Feb. 4, 2014
8508294 Power amplifier with feedback impedance for stable output Aug. 13, 2013
8410846 Variable gain amplifier Apr. 2, 2013
8390380 Linear FET feedback amplifier Mar. 5, 2013
8310310 Burst mode amplifier Nov. 13, 2012
8294520 Switchable multiband LNA design Oct. 23, 2012
8232841 Amplifier with output filtering Jul. 31, 2012
7888910 Sequencing switched single capacitor for automatic equalization of batteries connected in series Feb. 15, 2011
7852158 Operational amplifier Dec. 14, 2010
7750739 Dual reactive shunt low noise amplifier Jul. 6, 2010
7737787 Impedance-mapping amplifier circuit with exclusively reactive negative feedback Jun. 15, 2010
7541873 High frequency amplifier configuration for improved feedback capacitance neutralization Jun. 2, 2009
7423489 Low return loss resistive feedback amplifier Sep. 9, 2008
7417498 Amplifier with feedback bridge Aug. 26, 2008
7388428 Power amplifier with controllable feedback loop Jun. 17, 2008
7355479 Neutralization of feedback capacitance in amplifiers Apr. 8, 2008
7339436 Ultra broad-band low noise amplifier utilizing dual feedback technique Mar. 4, 2008
7298205 Amplifier and frequency converter Nov. 20, 2007
7292098 Operational amplifier Nov. 6, 2007
7274257 Variable gain wideband amplifier Sep. 25, 2007
7271660 Selectively adding auxiliary frequency compensation depending on the behaviour of an output transistor of a rail-to-rail operational amplifier Sep. 18, 2007
7227420 Transimpedance amplifier with a high gain/bandwidth product for conversion of a DAC output current Jun. 5, 2007
7221218 MOSFET amplifier having feedback controlled transconductance May. 22, 2007
7212072 High linearity smart HBT power amplifiers for CDMA/WCDMA application May. 1, 2007
7202746 Multiple-stage operational amplifier and methods and systems utilizing the same Apr. 10, 2007
7199652 Amplifier; and transmitter and communication device incorporating the same Apr. 3, 2007
7183853 Feedback amplifier having amplified signal path and feedback signal path separated Feb. 27, 2007
7154330 Stability compensation for adjustable gain amplifier Dec. 26, 2006
7110718 Phase distortion using MOS nonlinear capacitance Sep. 19, 2006
7061313 Dual feedback linear amplifier Jun. 13, 2006
7049894 Ahuja compensation circuit with enhanced bandwidth May. 23, 2006
7023279 Linear pre-amplifier for radio-frequency power amplifier Apr. 4, 2006
7020216 Method for adjusting a phase angle of a phase modifier of a transmitting device Mar. 28, 2006
6809594 Ultra broadband low noise amplifier with matched reactive input impedance Oct. 26, 2004
6809607 Circuit and method for compensating for non-linear distortion Oct. 26, 2004
6670801 Second harmonic tuning of an active RF device Dec. 30, 2003
RE38273 Baseband RF voltage-current probe Oct. 14, 2003
6611173 Miller effect-based circuit for splitting poles Aug. 26, 2003
6611174 Self-compensated transimpedance amplifier Aug. 26, 2003
6580325 Amplifier with miller-effect frequency compensation Jun. 17, 2003
6573790 Wide-bandwidth operational amplifier Jun. 3, 2003
6556083 Method and apparatus for maintaining stability in a circuit under variable load conditions Apr. 29, 2003
6492876 Low power analog equalizer with variable op-amp gain Dec. 10, 2002
6486740 Method and system for dynamic compensation Nov. 26, 2002
6476679 Semiconductor circuit with a stabilized gain slope Nov. 5, 2002
6441689 Transistor amplifier providing improved linear and return loss performance characteristics Aug. 27, 2002
6424226 Two-port with a frequency-dependent network Jul. 23, 2002

1 2 3 4 5 6 7










 
 
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