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Class Information
Number: 330/84
Name: Amplifiers > Signal feedback > Plural amplifier channels
Description: Subject matter involving plural amplifier channels combined in addition, for one or more channels, with signal feedback means above.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8680918 High voltage driver amplifier for piezo haptics Mar. 25, 2014
8654867 Transformer power combiner with filter response Feb. 18, 2014
8618878 Multiport amplifier and wireless device using the same Dec. 31, 2013
8587374 Amplifier activation Nov. 19, 2013
8588334 Robust antenna array Nov. 19, 2013
8581663 Multi-port amplification device that self-compensates in the presence of traffic Nov. 12, 2013
8400223 Amplifier arrangement Mar. 19, 2013
8274332 N-way Doherty distributed power amplifier with power tracking Sep. 25, 2012
8254496 Power amplifier and radio wave transmitter having the same Aug. 28, 2012
8155348 Post phase-inverter volume control Apr. 10, 2012
7952429 Multiple-input and multiple-output amplifier having pseudo-differential inputs May. 31, 2011
7940119 Multiple-input and multiple-output amplifier using mutual induction in the feedback network May. 10, 2011
7847630 Amplifier Dec. 7, 2010
7813515 Multi-channel power amplifier with channels independently self-configuring to a bridge or single-ended output, particularly for audio applications Oct. 12, 2010
7737778 Adaptive predistortion for a transmit system Jun. 15, 2010
7669426 Shared switching for multiple loads Mar. 2, 2010
7642849 Multiple-input and multiple-output amplifier Jan. 5, 2010
7567122 Variable gain amplifiers systems and methods Jul. 28, 2009
7557651 Dual transconductance amplifiers and differential amplifiers implemented using such dual transconductance amplifiers Jul. 7, 2009
7512387 Method and control system for controlling the output power of an RF amplifier system Mar. 31, 2009
7391259 Power amplifier Jun. 24, 2008
7375584 Gain adjustment method, gain adjustment circuit, and optical disc device having same gain adjustment circuit May. 20, 2008
7327190 Differential amplifier arrangement Feb. 5, 2008
7295066 Adaptive predistortion for a transmit system Nov. 13, 2007
7230483 Negative feedback system with an error compensation scheme Jun. 12, 2007
7161420 Amplifiers with compensation Jan. 9, 2007
7157976 High frequency amplifier Jan. 2, 2007
7126417 Distributed gain network Oct. 24, 2006
7126414 Arrangement and method for controlling an amplifier circuit corresponding to energy uptake in the amplifier circuit Oct. 24, 2006
7113744 Adaptive radio transceiver with a power amplifier Sep. 26, 2006
7088975 Automatic gain control system and method using multiple local AGC loops Aug. 8, 2006
7068099 Power amplifier module with distortion compensation Jun. 27, 2006
7068101 Adaptive predistortion for a transmit system Jun. 27, 2006
7053706 High linearity doherty communication amplifier with bias control May. 30, 2006
7002410 Adaptive linearization technique for communication building block Feb. 21, 2006
6784750 Transimpedance amplifier with selective DC compensation Aug. 31, 2004
6747517 Power-shifting rf amplifiers Jun. 8, 2004
6741144 High-frequency semiconductor device May. 25, 2004
6605992 Offset error in linear feedback loops corrected by loop replication Aug. 12, 2003
6590447 Precision bridge amplifier Jul. 8, 2003
6577198 Active power splitter with impedance matching Jun. 10, 2003
6566946 Noise reduction scheme for operational amplifiers May. 20, 2003
6388527 Semiconductor circuit with a stabilized gain slope May. 14, 2002
6326841 Method and apparatus for compensating for loss or RF output power from the isolation port of a hybrid coupler Dec. 4, 2001
6307434 Circuit for ensuring full saturation of amplifiers of a single input configured bridge amplifier Oct. 23, 2001
6304138 Audio-frequency power amplifier that utilizes a bridged amplified configuration Oct. 16, 2001
6160446 Balanced differential amplifier without common-mode feedback circuit Dec. 12, 2000
6097245 Differential output amplifier arrangement and method for tuning the output impedance of a differential output amplifier Aug. 1, 2000
6091294 Amplifier circuit Jul. 18, 2000
6057731 Low-distortion high-frequency amplifier May. 2, 2000

1 2 3 4










 
 
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