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Class Information
Number: 330/304
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including frequency-responsive means in the signal transmission path > And equalizing means
Description: Subject matter including a network connected to a line to correct or control its transmission frequency characteristics.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8493143 Predistorition linearizer with bridge topology having an equalizer stage for each bridge arm Jul. 23, 2013
8451884 Offset calibration methods and radio frequency data path circuits May. 28, 2013
8283982 Decision feedback equalizer circuit Oct. 9, 2012
8213638 Equalizer Jul. 3, 2012
8139957 High sensitivity optical receiver employing a high gain amplifier and an equalizing circuit Mar. 20, 2012
8081031 Equalization system with stabilized peaking gain for a communication system Dec. 20, 2011
7961050 Integrated circuits including an equalizer and operating methods thereof Jun. 14, 2011
7902924 Current-controlled CMOS (C3MOS) fully differential integrated wideband amplifier/equalizer with adjustable gain and frequency response without additional power or loading Mar. 8, 2011
7888910 Sequencing switched single capacitor for automatic equalization of batteries connected in series Feb. 15, 2011
7830992 Amplifier with a quadrature amplitude modulation (QAM) modulated and a continuous wave automatic gain control (AGC) circuit Nov. 9, 2010
7696839 Signal waveform equalizer circuit and receiver circuit Apr. 13, 2010
7598811 Current-controlled CMOS (C3MOS) fully differential integrated wideband amplifier/equalizer with adjustable gain and frequency response without additional power or loading Oct. 6, 2009
7459980 Apparatus for receiver equalization Dec. 2, 2008
7209007 Combined analog signal gain controller and equalizer Apr. 24, 2007
7039942 Pad adjustable equalizer for two way cable transmission May. 2, 2006
7019594 Method and apparatus for analyzing performance of a multi-stage radio frequency amplifier Mar. 28, 2006
6897721 Composite amplifier with optimized linearity and efficiency May. 24, 2005
6838943 Input follower system and method Jan. 4, 2005
6836184 Network amplifier with microprocessor control Dec. 28, 2004
6794936 Equalizer system and method for predistortion Sep. 21, 2004
6784745 Adjustable current-mode equalizer Aug. 31, 2004
6785907 Amplifier and equalizer for two way cable transmission Aug. 31, 2004
6741140 Circuit for receiving an AC coupled broadband signal May. 25, 2004
6710653 D-class power amplifier with electric power regeneration function Mar. 23, 2004
6674326 Digitally controllable nonlinear pre-equalizer Jan. 6, 2004
6608524 Automatic gain control circuit Aug. 19, 2003
6580327 Electronically controllable slope equalizer Jun. 17, 2003
6531931 Circuit and method for equalization of signals received over a communication system transmission line Mar. 11, 2003
6501792 Serial digital data communications receiver with improved automatic cable equalizer, AGC system, and DC restorer Dec. 31, 2002
6492876 Low power analog equalizer with variable op-amp gain Dec. 10, 2002
6489838 Apparatus and method for equalizing received network signals using a single zero high-pass filter having selectable impedance Dec. 3, 2002
6486735 Adaptive equalizer filter with variable gain control Nov. 26, 2002
6433642 Impedance matched frequency dependent gain compensation network for multi-octave passband equalization Aug. 13, 2002
6300669 Semiconductor integrated circuit device and method of designing same Oct. 9, 2001
6215354 Closed loop calibration for an amplitude reconstruction amplifier Apr. 10, 2001
6188279 Low cost miniature broadband linearizer Feb. 13, 2001
5880581 AC or bidirectional circuit utilizing unipolar capacitors Mar. 9, 1999
5841810 Multiple stage adaptive equalizer Nov. 24, 1998
5793264 LAN equalizer Aug. 11, 1998
5701099 Transconductor-C filter element with coarse and fine adjustment Dec. 23, 1997
5686863 Tunable tone control circuit and a device and method for tuning the RC constants Nov. 11, 1997
5642079 Amplifier with pole/zero compensation Jun. 24, 1997
5636048 Equalizing amplifier, receiver using the same and preamplifier Jun. 3, 1997
5625317 Tuning method for integrated continuous-time filters Apr. 29, 1997
5448589 Circuit for sensing cable effects for automatic equalization Sep. 5, 1995
5398005 Voss tone control circuit with reduced distortion and reduced DC offset Mar. 14, 1995
5361043 Delay circuit for changeably delaying an analog signal Nov. 1, 1994
5327102 Sound recording apparatus Jul. 5, 1994
5280346 Equalizing amplifier Jan. 18, 1994
5274339 Gain compensation circuit Dec. 28, 1993

1 2 3

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