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Class Information
Number: 455/239.1
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Local control of receiver operation > Gain control > Automatic > Nonlinear automatic gain control
Description: Subject matter wherein the output of the amplifier does not rise or fall in direct proportion to the input.










Sub-classes under this class:

Class Number Class Name Patents
455/242.1 Delayed 40
455/241.1 Different gain stages 118
455/244.1 Dual time constant 19
455/240.1 Variable automatic gain control loop gain 210


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8675078 Test technique for set-top boxes Mar. 18, 2014
8615212 Direct conversion receiver architecture Dec. 24, 2013
8565358 Circuits, systems, and methods for managing automatic gain control in quadrature signal paths of a receiver Oct. 22, 2013
8532235 UWB delay and multiply receiver Sep. 10, 2013
8494467 Automatic gain control configuration Jul. 23, 2013
8493954 Method and apparatus for reducing digital to analog conversion (DAC) bits in frequency division multiple access (FDMA) system Jul. 23, 2013
8472573 Automatic gain control with out of band blocking signal compensation Jun. 25, 2013
8433273 Increasing sensitivity of radio receiver Apr. 30, 2013
8422974 Noise cancellation for antenna module Apr. 16, 2013
8351887 Systems and methods providing multi-path low noise amplifiers with seamless switching Jan. 8, 2013
8331891 Non-linear signal distortion detection using multiple signal to noise ratio measurement sources Dec. 11, 2012
8306162 Method and apparatus for complementary cumulative distribution driven level convergence for spectrum sensing Nov. 6, 2012
8259878 Apparatus and method for receiving signal in wireless communication system using multi antenna Sep. 4, 2012
8170516 Method for the digital compensation of nonlinearities in a communication system and receiver device May. 1, 2012
8149964 Symbol scaling with automatic gain control for wireless communication Apr. 3, 2012
8055231 RF feedback engine coupled to receiver low noise amplifier Nov. 8, 2011
RE42799 Packet acquisition and channel tracking for a wireless communication device configured in a zero intermediate frequency architecture Oct. 4, 2011
7991087 Automatic gain control with out of band blocking signal compensation Aug. 2, 2011
7929929 Method and apparatus for spur reduction in a frequency synthesizer Apr. 19, 2011
7912436 LNA gain adjustment in an RF receiver to compensate for intermodulation interference Mar. 22, 2011
7885625 RF A/D converter with phased feedback to low noise amplifier Feb. 8, 2011
7729667 System and method for intermodulation distortion cancellation Jun. 1, 2010
7668517 Radio frequency signal receiver with adequate automatic gain control Feb. 23, 2010
7664211 Automatic gain control with out of band blocking signal compensation Feb. 16, 2010
7660569 Methods and apparatus for digital jammer detection Feb. 9, 2010
7555274 Radio receiver and radio receiving method Jun. 30, 2009
7515890 Radio receiver and radio receiving method Apr. 7, 2009
7483500 Narrowband gain control of receiver with digital post filtering Jan. 27, 2009
7469134 Mobile communication terminal apparatus, a variable gain amplifier circuit and a gain control circuit Dec. 23, 2008
7433662 Mixer gain control with gain tracking offsets Oct. 7, 2008
7409018 Automatic gain controller outputting control value varying nonlinearly, and a method of outputting a gain control signal thereof Aug. 5, 2008
7398066 Communication system control using reliability data Jul. 8, 2008
7386285 Automatic gain control adaptive for plural modulation schemes Jun. 10, 2008
7319884 FM radio device and transmission power control method Jan. 15, 2008
7305218 RF switch Dec. 4, 2007
7302022 Automatic gain control device and method in orthogonal frequency division multiplexing system with DC offset compensation function, and recording medium storing program containing the method Nov. 27, 2007
7271852 Digital television receiver with automatic gain control unit and method Sep. 18, 2007
7239856 Apparatus and method for compensating gain of an automatic gain controller Jul. 3, 2007
7133527 Stereodecoder Nov. 7, 2006
7130602 Dynamically programmable receiver Oct. 31, 2006
7120410 LNA gain adjustment in an RF receiver to compensate for intermodulation interference Oct. 10, 2006
7116955 Dual loop automatic gain control Oct. 3, 2006
7068988 Radio reception apparatus, signal processing timing control method, and signal processing timing control program Jun. 27, 2006
7068987 Packet acquisition and channel tracking for a wireless communication device configured in a zero intermediate frequency architecture Jun. 27, 2006
7058371 Mechanism for modulating wireless communication signals Jun. 6, 2006
7054605 Variable-gain low noise amplifier to reduce linearity requirements on a radio receiver May. 30, 2006
7046749 Narrowband gain control of receiver with digital post filtering May. 16, 2006
7042292 Gain control circuit, and a radio communication apparatus using the same May. 9, 2006
7039376 AGC amplifier circuit for use in a digital satellite broadcast receiver apparatus May. 2, 2006
7015758 Gain control circuit, and a radio communication apparatus using the same Mar. 21, 2006

1 2 3










 
 
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