ClassID:

219713

H03F2201/3231 - CPC Classification

Classification description:

Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by; Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion Adaptive predistortion using phase feedback from the output of the main amplifier

Recent Application in this class:
#1
20230034540
2023-02-02

Digital predistortion of signals

#2
20210288617
2021-09-16

Power amplifier linearization circuit and related apparatus

#3
20210234564
2021-07-29

Digital predistortion of signals

#4
20200295790
2020-09-17

Digital predistortion of signals

#5
20190280654
2019-09-12

Method and system for linearizing an amplifier using transistor-level dynamic feedback

#6
20180138868
2018-05-17

METHOD AND SYSTEM FOR LINEARIZING AN AMPLIFIER USING TRANSISTOR-LEVEL DYNAMIC FEEDBACK

#7
20170047899
2017-02-16

Weighted memory polynomial method and system for power amplifiers predistortion

#8
20170040954
2017-02-09

Method and system for linearizing an amplifier using transistor-level dynamic feedback

#9
20160126903
2016-05-05

Weighted memory polynomial method and system for power amplifiers predistortion

#10
20160079932
2016-03-17

Apparatus and method for digital pre-distortion in wireless communication system

#11
20150207467
2015-07-23

Method and system for linearizing an amplifier using transistor-level dynamic feedback

#12
20150097618
2015-04-09

Distortion compensation apparatus and method therefor

#13
20110043282
2011-02-24

RF power amplifier system with impedance modulation

#14
20110034136
2011-02-10

Cancellation of oscillator remodulation

#15
20100327988
2010-12-30

Reducing the distortion of applied modulation

#16
20100097151
2010-04-22

Phase noise correction device and its method

#17
20100060357
2010-03-11

RF power amplifier system with impedance modulation

#18
20090117865
2009-05-07

RF power amplifier controlled by estimated distortion level of output signal of power amplifier

#19
20070241816
2007-10-18

Signal extraction circuit and distortion-compensated amplifier incorporating the same

#20
20050047521
2005-03-03

Distortion compensating apparatus

#21
16151129
2020-04-14

Digital communications circuits and systems

#22
14292241
2016-10-04

Doherty power amplifier with integrated pre-distortion