Resources Contact Us Home
Browse by Category: Main > Electrical & Energy
Class Information
Number: 330/109
Name: Amplifiers > Signal feedback > Frequency responsive feedback means
Description: Subject matter wherein the "signal feedback circuit means" includes circuit means which acts on the signal feedback to affect some frequency component of the signal feedback differently from the other frequency components of the signal, as for example, a tuned circuit which eliminates a frequency component of the signal feedback or an equalizer which emphasizes or de-emphasizes the amplitude of some frequency range of the signal feedback with respect to others.

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8693676 Power efficiency of a line driver Apr. 8, 2014
8644773 Multiband low noise amplifier (LNA) with parallel resonant feedback Feb. 4, 2014
8638249 System and method for high input capacitive signal amplifier Jan. 28, 2014
8610497 System and method for capacitive signal source amplifier Dec. 17, 2013
8587378 Analog pre-distortion linearizer Nov. 19, 2013
8558288 Methods and apparatus for measuring analytes using large scale FET arrays Oct. 15, 2013
8552798 Method for offset compensation of a switched-capacitor amplifier and switched capacitor amplifier arrangement Oct. 8, 2013
8508294 Power amplifier with feedback impedance for stable output Aug. 13, 2013
8392199 Clipping detection device and method Mar. 5, 2013
8374279 Modulation device for a transmission path, method for signal processing in a transmission path, and transmission path having the modulation device Feb. 12, 2013
8330536 Differential reference interface with low noise offset cancellation Dec. 11, 2012
8274327 Switched capacitor amplifier Sep. 25, 2012
8232841 Amplifier with output filtering Jul. 31, 2012
8193856 Amplifier and switched capacitor amplifier circuit Jun. 5, 2012
8179200 Amplifier circuit and light receiving amplifier circuit using the same May. 15, 2012
8159292 Amplifying circuit Apr. 17, 2012
8032093 Power detection arrangement with harmonic suppressor Oct. 4, 2011
8013672 Programmable gain amplifier and embedded filter Sep. 6, 2011
7944288 Switched-capacitor amplifier arrangement having a low input current May. 17, 2011
7872524 Amplification circuit, amplification circuit noise reducing method and program thereof Jan. 18, 2011
7852152 order tunable low-pass continuous time filter for fiber optic receivers Dec. 14, 2010
7733173 Unilateral feedback power amplifier and method for realizing the same Jun. 8, 2010
7710091 Low dropout linear voltage regulator with an active resistance for frequency compensation to improve stability May. 4, 2010
7696820 Increasing amplifier bandwidth by positive capacitive feedback Apr. 13, 2010
7688134 Transimpedance amplifier Mar. 30, 2010
7679437 Split-feedback technique for improving load regulation in amplifiers Mar. 16, 2010
7633338 Compensation circuit for amplifiers having multiple stages Dec. 15, 2009
7605650 Switched capacitor amplifier with higher gain and improved closed-loop gain accuracy Oct. 20, 2009
7502599 Cartesian loop transmitter and method of adjusting an output level of such transmitter Mar. 10, 2009
7439802 Unilateral feedback power amplifier and method for realizing the same Oct. 21, 2008
7423489 Low return loss resistive feedback amplifier Sep. 9, 2008
7423483 Increasing amplifier bandwidth by positive capacitive feedback Sep. 9, 2008
7403067 Compensation circuit for amplifiers having multiple stages Jul. 22, 2008
7403068 Method for double sampling loop negative feedback and double sampling negative feedback amplifier Jul. 22, 2008
7340226 Cartesian loop transmitter and method of adjusting an output level of such transmitter Mar. 4, 2008
7292098 Operational amplifier Nov. 6, 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
7230483 Negative feedback system with an error compensation scheme Jun. 12, 2007
7215191 Device for amplitude adjustment and rectification made with MOS technology May. 8, 2007
7184099 Controllable signal baseline and frequency emphasis circuit Feb. 27, 2007
7184737 Image-rejection I/Q demodulators Feb. 27, 2007
7154330 Stability compensation for adjustable gain amplifier Dec. 26, 2006
7126415 Switched-capacitor circuits with reduced finite-gain effect Oct. 24, 2006
7061313 Dual feedback linear amplifier Jun. 13, 2006
7046080 Signal processing circuit May. 16, 2006
7026870 Low-noise active RC signal processing circuit Apr. 11, 2006
7002409 Compensation circuit for amplifiers having multiple stages Feb. 21, 2006
6917257 Apparatus and method for equalizing received signals Jul. 12, 2005
6909321 Active isolated-integrator low-pass filter with attenuation poles Jun. 21, 2005
6861902 Self oscillating power amplifier Mar. 1, 2005

1 2 3 4 5 6

  Recently Added Patents
In-vehicle electronic control apparatus having monitoring control circuit
Method and apparatus for interactive distribution of digital content
Prioritizing application data for transmission in a wireless user device
Cascode circuit device with improved reverse recovery characteristic
Rotation angle detecting device
Method and system for phase-sensitive magnetic resonance imaging
ZnO green luminescent material and its preparation
  Randomly Featured Patents
Poppet valve with diverging-converging flow passage and method to reduce total pressure loss
Locking device of middle pole in a VCR combined with camera
Method for agglomeration of flue gas desulfurization dust
Device for cleaning of flue gas
Ultrasonic transducer, ultrasonic transducer array, and ultrasonic device
Perfluorodioxoles, the preparation process thereof, and homopolymers and copolymers obtained therefrom
Isotropically reinforced net-shape microcomposites
Method and apparatus for treating pelvic pain
Distributed power and electronic air brake control system for a train and associated methods
Methods and systems for HTTP streaming using an intelligent HTTP client