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Class Information
Number: 330/107
Name: Amplifiers > Signal feedback > Phase shift means in loop path
Description: Subject matter wherein the "loop path" (see (3) Note under subclass 75 for the definition of loop path) includes voltage or current phase shift or delay means which may shift the phase of the voltage or current of one signal frequency or signal frequency feedback component with respect to another or shift the phase of the voltage of the signal or signal feedback with respect to the current.










Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8686791 Amplifying apparatus and distortion compensation method Apr. 1, 2014
8659357 Conditionally-stable operational amplifier with tunable wideband buffers Feb. 25, 2014
8660502 High frequency antenna switch module Feb. 25, 2014
8653890 Amplifier calibration Feb. 18, 2014
8653888 High-frequency signal amplifier Feb. 18, 2014
8620233 Method of power amplifier predistortion adaptation using compression detection Dec. 31, 2013
8508217 Output circuit of charge mode sensor Aug. 13, 2013
8508294 Power amplifier with feedback impedance for stable output Aug. 13, 2013
8503552 Method and digital communication device for receiving data using QAM symbols Aug. 6, 2013
8487699 Inductive-element feedback-loop compensator Jul. 16, 2013
8436624 Signal acquisition system having reduced probe loading of a device under test May. 7, 2013
8416018 Variable frequency amplifier Apr. 9, 2013
8410849 Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments Apr. 2, 2013
8410846 Variable gain amplifier Apr. 2, 2013
8299851 High efficiency linear amplifier Oct. 30, 2012
8248160 Adaptive predistortion for a transmit system Aug. 21, 2012
8232841 Amplifier with output filtering Jul. 31, 2012
8193856 Amplifier and switched capacitor amplifier circuit Jun. 5, 2012
8159293 Nested transimpendance amplifier Apr. 17, 2012
8120422 Ripple reduction loop for chopper amplifiers and chopper-stabilized amplifiers Feb. 21, 2012
8058928 Operational amplifier for an active pixel sensor Nov. 15, 2011
8049557 Self oscillating class D amplification device Nov. 1, 2011
7948309 DC-offset cancelled programmable gain array for low-voltage wireless LAN system and method using the same May. 24, 2011
7928800 Programmable compensation network for operational amplifiers Apr. 19, 2011
7911272 Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments Mar. 22, 2011
7888910 Sequencing switched single capacitor for automatic equalization of batteries connected in series Feb. 15, 2011
7880543 Data transmitting circuit and transmitting method Feb. 1, 2011
7872524 Amplification circuit, amplification circuit noise reducing method and program thereof Jan. 18, 2011
7826801 Adaptive forward error corrector and method thereof, and TDD radio repeating apparatus using the same Nov. 2, 2010
7812669 Predistortion apparatus, system, and method Oct. 12, 2010
7812670 Baseband predistortion device and method Oct. 12, 2010
7808311 Nested transimpedance amplifier Oct. 5, 2010
7737778 Adaptive predistortion for a transmit system Jun. 15, 2010
7738616 Phase tracking system Jun. 15, 2010
7719355 Method and apparatus for providing a Cartesian training waveform May. 18, 2010
7626453 Nested transimpedance amplifier Dec. 1, 2009
7616057 Nested transimpedance amplifier Nov. 10, 2009
7605649 Nested transimpedance amplifier Oct. 20, 2009
7489188 Input matching apparatus and method for power amplifier using delta-sigma modulated signal Feb. 10, 2009
7456688 Signal extraction circuit and distortion-compensated amplifier incorporating the same Nov. 25, 2008
7423484 Adaptive predistortion for a transmit system with gain, phase and delay adjustments Sep. 9, 2008
7409193 Predistortion circuit for a transmit system Aug. 5, 2008
7405616 Nested transimpendance amplifier Jul. 29, 2008
7403068 Method for double sampling loop negative feedback and double sampling negative feedback amplifier Jul. 22, 2008
7382193 Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase Jun. 3, 2008
7346100 Estimating gain and phase imbalance in upconverting transmitters Mar. 18, 2008
7327192 Adaptive predistortion for a transmit system with gain, phase and delay adjustments Feb. 5, 2008
7323854 Zero cancellation in multiloop regulator control scheme Jan. 29, 2008
7323930 Amplifiers with compensation Jan. 29, 2008
7317353 Amplification device Jan. 8, 2008

1 2 3 4 5 6 7 8 9










 
 
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