ClassID:

219706

H03F2201/3209 - 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 the amplifier comprising means for compensating memory effects

Recent Application in this class:
#1
20250364956
2025-11-27

POWER AMPLIFICATION SYSTEM, POWER AMPLIFICATION METHOD, AND DIGITAL PREDISTORTION CIRCUIT

#2
20250286513
2025-09-11

VOLTAGE REGULATOR TO ENABLE REDUCED MEMORY EFFECTS IN POWER AMPLIFIER

#3
20240223129
2024-07-04

Systems and methods for providing an envelope tracking supply voltage

#4
20220360232
2022-11-10

Low-power approximate DPD actuator for 5G-new radio

#5
20220321063
2022-10-06

Universal memory-based model for nonlinear power amplifier behaviors

#6
20220052651
2022-02-17

Systems and methods for providing an envelope tracking power supply voltage

#7
20220052650
2022-02-17

Systems and methods for providing an envelope tracking supply voltage

#8
20220052649
2022-02-17

Systems and methods for providing an envelope tracking supply voltage

#9
20220052648
2022-02-17

Systems and methods for providing an envelope tracking supply voltage

#10
20220052647
2022-02-17

Systems and methods for providing an envelope tracking supply voltage

#11
20210328555
2021-10-21

Low-power approximate DPD actuator for 5G-new radio

#12
20210328553
2021-10-21

Distortion compensation device, wireless communicator, predistorter, distortion compensation method, and computer program

#13
20210184636
2021-06-17

Universal memory-based model for nonlinear power amplifier behaviors

#14
20200412305
2020-12-31

METHOD AND ARRANGEMENT FOR COMPENSATING MEMORY EFFECTS IN POWER AMPLIFIER

#15
20200358640
2020-11-12

MODULATION AGNOSTIC DIGITAL HYBRID MODE POWER AMPLIFIER SYSTEM AND METHOD

#16
20190238101
2019-08-01

Universal memory-based model for nonlinear power amplifier behaviors

#17
20180331662
2018-11-15

Method of reducing memory effect of power amplifier

#18
20180227152
2018-08-09

Modulation agnostic digital hybrid mode power amplifier system and method

#19
20180219578
2018-08-02

Crosstalk correction using pre-compensation

#20
20170293485
2017-10-12

Direct digital synthesis of signals using maximum likelihood bit-stream encoding

#21
20170077879
2017-03-16

Linearization circuit for a multiple-stage RF power amplifier

#22
20160365950
2016-12-15

Direct digital synthesis of signals using maximum likelihood bit-stream encoding

#23
20160352290
2016-12-01

Circuits for linearizing an output signal of a non-linear component and related devices and methods

#24
20160329927
2016-11-10

Digital pre-distortion parameter obtaining method and pre-distortion system

#25
20160211804
2016-07-21

Amplifier bias circuit

#26
20160117430
2016-04-28

Baseband equivalent volterra series for behavioral modeling and digital predistortion of wideband transmitters

#27
20160079933
2016-03-17

Baseband equivalent volterra series for digital predistortion in multi-band power amplifiers

#28
20160072647
2016-03-10

Direct digital synthesis of signals using maximum likelihood bit-stream encoding

#29
20150236655
2015-08-20

Distortion compensation circuit and transmission device using distortion compensation circuit and high-frequency power amplifier

#30
20150171768
2015-06-18

Inverter/power amplifier with capacitive energy transfer and related techniques

#31
20150162881
2015-06-11

Augmented twin nonlinear two-box modeling and predistortion method for power amplifiers and transmitters

#32
20150146822
2015-05-28

Multi-path digital pre-distortion

#33
20150078484
2015-03-19

Predistortion correction method, predistortion correction apparatus, transmitter, and base station

#34
20150016567
2015-01-15

Digital pre-distortion systems in transmitters

#35
20150010110
2015-01-08

Modulation agnostic digital hybrid mode power amplifier system and method

#36
20140292406
2014-10-02

Signal predistortion for non-linear amplifier

#37
20140266431
2014-09-18

Under-sampling digital pre-distortion architecture

#38
20140219174
2014-08-07

Remote radio head unit system with wideband power amplifier and method

#39
20140108477
2014-04-17

Vector processor having instruction set with vector convolution function for fir filtering

#40
20140086367
2014-03-27

Maximum likelihood bit-stream generation and detection using M-algorithm and infinite impulse response filtering

#41
20140086356
2014-03-27

Software digital front end (SoftDFE) signal processing

#42
20140075162
2014-03-13

Digital processor having instruction set with complex exponential non-linear function

#43
20140064417
2014-03-06

Direct digital synthesis of signals using maximum likelihood bit-stream encoding

#44
20130285743
2013-10-31

Amplifier circuit and wireless communication equipment

#45
20130271212
2013-10-17

Digital Predistorter (DPD) structure based on dynamic deviation reduction (DDR)-based volterra series

#46
20130249631
2013-09-26

Memory structure having taps and non-unitary delays between taps

#47
20130223565
2013-08-29

Transmitter linearized using look-up table with unadaptable data and method therefor

#48
20130163694
2013-06-27

Architecture of a low bandwidth predistortion system for non-linear RF components

#49
20130117342
2013-05-09

Combined RF equalizer and I/Q imbalance correction

#50
20130114761
2013-05-09

Multi-stage crest factor reduction (CFR) for multi-channel multi-standard radio

#51
20120229206
2012-09-13

Minimum feedback radio architecture with digitally configurable adaptive linearization

#52
20120200355
2012-08-09

Digital predistortion of a power amplifier for signals comprising widely spaced carriers

#53
20120194270
2012-08-02

Broadband linearization module and method

#54
20120154041
2012-06-21

Predistortion apparatuses and methods

#55
20120154039
2012-06-21

Generation of pre-distortion coefficients

#56
20120119832
2012-05-17

Joint process estimator with variable tap delay line for use in power amplifier digital predistortion

#57
20120119831
2012-05-17

Orthogonal basis function set for digital predistorter

#58
20120086507
2012-04-12

Power amplifier linearization method and apparatus

#59
20110268226
2011-11-03

Memory effect canceller, transmitter, and memory effect cancelling method

#60
20110204975
2011-08-25

Calculating apparatus, distortion correcting apparatus, amplifying apparatus, and calculating method

#61
20110163806
2011-07-07

Distortion compensation amplification device

#62
20110158081
2011-06-30

Remote radio head unit system with wideband power amplifier and method

#63
20110156815
2011-06-30

Modulation agnostic digital hybrid mode power amplifier system and method

#64
20110092173
2011-04-21

Transmitting unit that reduces PAPR using out-of-band distortion and method therefor

#65
20100277236
2010-11-04

Predistorter

#66
20100194474
2010-08-05

Predistorter and distortion compensation method

#67
20100156471
2010-06-24

Scalable cost function generator and method thereof

#68
20100090762
2010-04-15

Minimum feedback radio architecture with digitally configurable adaptive linearization

#69
20090256632
2009-10-15

Method and apparatus for reducing frequency memory effects in RF power amplifiers

#70
20090058521
2009-03-05

SYSTEM AND METHOD OF DIGITAL LINEARIZATION IN ELECTRONIC DEVICES

#71
20080123770
2008-05-29

Apparatus and method providing non-linear adaptive signal tracking

#72
20080094139
2008-04-24

Power amplifier with distortion compensation circuit

#73
20070063770
2007-03-22

Power amplifier pre-distortion

#74
20060240786
2006-10-26

Method and system for broadband predistortion linearization

#75
20060087374
2006-04-27

Feed forward amplifier employing bias circuit topologies for minimization of RF amplifier memory effects

#76
20050258898
2005-11-24

Predistorter

#77
20050195919
2005-09-08

Digital predistortion system and method for high efficiency transmitters

#78
20050189990
2005-09-01

Method and apparatus for control of predistortion linearizer based on power series

#79
20050180527
2005-08-18

Digital predistorter using power series model

#80
14284362
2015-10-13

Memory polynomial based digital predistorter