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Class Information
Number: 330/279
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including gain control means > And significant control voltage developing means
Description: Subject matter including specific details or distinctive characteristics of the gain control developing means.










Sub-classes under this class:

Class Number Class Name Patents
330/280 With delay means 88
330/281 With time constant means 107


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
8674768 Signaling system with low-power automatic gain control Mar. 18, 2014
8648661 Current limiting circuit Feb. 11, 2014
8644777 System and method for power amplifier over-voltage protection Feb. 4, 2014
8638249 System and method for high input capacitive signal amplifier Jan. 28, 2014
8600329 Interference signal canceller Dec. 3, 2013
8593325 Successive approximation analog-to-digital conversion Nov. 26, 2013
8593223 Automatic gain control circuit Nov. 26, 2013
8576011 Amplifier with high power supply noise rejection Nov. 5, 2013
8552803 Amplifier with dynamic bias Oct. 8, 2013
8493151 Method and apparatus for programmable gain control useful with digital to analog converter Jul. 23, 2013
8494182 Feedback limiter with adaptive time control Jul. 23, 2013
8461928 Constant-gain power amplifier Jun. 11, 2013
8461931 Wideband RF power amplifier for multi-mode multi-band applications Jun. 11, 2013
8461923 Logarithmic mean-square power detector with servo control loop Jun. 11, 2013
8456237 Low noise variable gain amplifier utilizing variable feedback techniques with constant input/output impedance Jun. 4, 2013
8451061 Amplification of an incoming signal received via an antenna May. 28, 2013
8432224 Power amplifier with back-off efficiency Apr. 30, 2013
8427232 Self-calibrating gain control system Apr. 23, 2013
8405374 Power amplification device Mar. 26, 2013
8391349 Equalizer with automatic gain control (AGC) Mar. 5, 2013
8385854 Adaptive parametric power amplifier protection circuit Feb. 26, 2013
8373505 Dynamic current boost in class AB amplifier for low distortion Feb. 12, 2013
8362840 Apparatus and methods for biasing a power amplifier Jan. 29, 2013
8331882 VSWR normalizing envelope modulator Dec. 11, 2012
8284090 Method and apparatus for analog to digital conversion of small signals in the presence of a large DC offset Oct. 9, 2012
8258870 System and method for digital control of amplifier gain with reduced zipper noise Sep. 4, 2012
8258876 Power amplifier protection circuit Sep. 4, 2012
8228121 Automatic gain control circuit Jul. 24, 2012
8219058 Radio receiver Jul. 10, 2012
8183924 Output stage with adaptive bias control May. 22, 2012
8174313 Apparatus and method for controlling power amplifier May. 8, 2012
8154345 Apparatus and method for current sensing using a wire bond Apr. 10, 2012
8149063 Current-restriction circuit and driving method therefor Apr. 3, 2012
8138831 Low noise amplifier Mar. 20, 2012
8139792 Amplifier circuits, methods of starting and stopping amplifier circuits Mar. 20, 2012
8125354 Complex switch control system Feb. 28, 2012
8121160 Driver circuit for semiconductor laser diode driven in differential mode Feb. 21, 2012
8120427 Circuit arrangement and method for power regulation and amplifier arrangement Feb. 21, 2012
8115551 Amplifying device and its control method Feb. 14, 2012
8111102 Auto gain controllers, and communication terminals having the same Feb. 7, 2012
8102212 Signaling system with low-power automatic gain control Jan. 24, 2012
8098100 Variable gain amplifiers Jan. 17, 2012
8089315 Programmable gain amplifier Jan. 3, 2012
8076974 Radio frequency (RF) power amplifier and RF power amplifier apparatus Dec. 13, 2011
8077816 Fast predictive automatic gain control for dynamic range reduction in wireless communication receiver Dec. 13, 2011
8068622 Method and apparatus for controlling a selectable voltage audio power output stage Nov. 29, 2011
8063704 Gain adjustment device and method thereof Nov. 22, 2011
8054995 System, method and apparatus for adjusting an output of a transducer Nov. 8, 2011
8055232 Radio frequency receiving apparatus, radio frequency receiving method, LSI for radio frequency signal and LSI for base band signal Nov. 8, 2011
8014738 Method and apparatus for optimizing output power levels in power amplifiers Sep. 6, 2011

1 2 3 4 5 6 7 8 9 10 11 12 13










 
 
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