ClassID:

219173

H03F1/3252 - CPC Classification

Classification description:

Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements; Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using multiple parallel paths between input and output

Recent Application in this class:
#1
20260121593
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AMPLIFIER DEVICE WITH ANALOG AND DIGITAL PREDISTORTION

#2
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2025-09-18

TRANSCEIVER FOR DRIVING LOAD MODULATED BALANCED AMPLIFIER

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20250239975
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MULTI-MODE NONLINEAR JUNCTION DETECTOR

#4
20240413797
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MULTI-RATE MULTISTAGE DIGITAL COMPENSATOR FOR NONLINEAR SYSTEMS

#5
20240137258
2024-04-25

METHOD AND DEVICE(S) FOR SUPPORTING MACHINE LEARNING BASED CREST FACTOR REDUCTION AND DIGITAL PREDISTORTION

#6
20240063760
2024-02-22

PRACTICAL PREDISTORTION ARCHITECTURES FOR MULTIBAND RADIOS

#7
20230291620
2023-09-14

Method and device(s) for performing digital predistortion on signals for multiband transmission in a wireless communication network

#8
20220360232
2022-11-10

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

#9
20210328555
2021-10-21

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

#10
20200067543
2020-02-27

Digital compensator

#11
20200007094
2020-01-02

High-frequency amplifier circuitry and semiconductor device

#12
20190238099
2019-08-01

Wideband amplifier and methods of use

#13
20190199295
2019-06-27

Feedback in MISO systems

#14
20190140605
2019-05-09

Digital predistortion processing apparatus

#15
20190097589
2019-03-28

Circuit and method for predistortion

#16
20190007075
2019-01-03

Digital compensator

#17
20180375480
2018-12-27

Least mean squares adaptation of a concurrent multi-band pre-distorter using overlapping spines

#18
20180302041
2018-10-18

Amplifier circuit for compensating an output signal from a circuit

#19
20180262168
2018-09-13

Predistortion device

#20
20180191387
2018-07-05

Signal processing arrangement for a transmitter

#21
20180191314
2018-07-05

Digital predistortion for multiple power amplifiers

#22
20180167033
2018-06-14

Noise generator

#23
20180006616
2018-01-04

Method to mitigate undesired oscillator frequency modulation effects in-side a synthesizer due to interference signals and synthesizer circuit

#24
20170329359
2017-11-16

Low voltage tube circuits

#25
20170256400
2017-09-07

Semiconductor device and method of manufacturing semiconductor device

#26
20170125565
2017-05-04

3-5 device with doped regions and method of fabricating

#27
20170005627
2017-01-05

Moving mean and magnitude dual path digital predistortion

#28
20160300926
2016-10-13

Semiconductor device and method of manufacturing semiconductor device

#29
20160204750
2016-07-14

Distortion compensation device and distortion compensation method

#30
20160142022
2016-05-19

Multiband power amplification apparatus

#31
20160119004
2016-04-28

Multi-band radio-frequency digital predistortion

#32
20150244328
2015-08-27

PPA linearization

#33
20150207467
2015-07-23

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

#34
20150194938
2015-07-09

Amplifier assembly

#35
20150163079
2015-06-11

Multi-band radio-frequency digital predistortion

#36
20150078484
2015-03-19

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

#37
20140340155
2014-11-20

Linearization of heterogeneous power amplifier systems

#38
20140312975
2014-10-23

Amplifier using nonlinear drivers

#39
20140097874
2014-04-10

Systems and methods of harmonic extraction and rejection

#40
20140002186
2014-01-02

Distortion compensating apparatus and distortion compensating method

#41
20130321075
2013-12-05

Method for compensating signal distortions in composite amplifiers

#42
20130278230
2013-10-24

Distortion cancellation in analog circuits

#43
20130241646
2013-09-19

Dual loop adaptation digital predistortion architecture for power amplifiers

#44
20130183915
2013-07-18

Method and system for generating odd order predistortions for a power amplifier receiving concurrent dual band inputs

#45
20130064325
2013-03-14

Linearization for a single power amplifier in a multi-band transmitter

#46
20120313700
2012-12-13

Predistorter for a multi-antenna transmitter

#47
20120119831
2012-05-17

Orthogonal basis function set for digital predistorter

#48
20120119811
2012-05-17

Configurable basis-function generation for nonlinear modeling

#49
20120119810
2012-05-17

Non-linear model with tap output normalization

#50
20100253425
2010-10-07

Method and apparatus for performing predistortion

#51
20100203851
2010-08-12

WIRELESS TRANSMISSION DEVICE AND WIRELESS TRANSMISSION METHOD

#52
20100202563
2010-08-12

Method and pre-corrector for correcting signals in radio frequency links

#53
20100009642
2010-01-14

Power control system for a wireless communication unit

#54
20090264089
2009-10-22

Multi-band lookup table type predistorter

#55
20090174481
2009-07-09

Multi-linearity mode LNA having a deboost current path

#56
20090163154
2009-06-25

Method for compensating signal distortions in composite amplifiers

#57
20090096522
2009-04-16

AMPLIFIER CIRCUIT

#58
20090074106
2009-03-19

Multi-mode and multi-band transmitters for wireless communication

#59
20090015326
2009-01-15

Distortion compensation apparatus

#60
20070063770
2007-03-22

Power amplifier pre-distortion

#61
20070063769
2007-03-22

Arrangement and method for digital predistortion of a complex baseband input signal

#62
20070044024
2007-02-22

Derivative superposition circuit for linearization

#63
20070013444
2007-01-18

Parallel path pre-distorted amplifier

#64
20060276146
2006-12-07

Multi-band lookup table type predistorter

#65
20060270365
2006-11-30

Method and device for power amplifier with high accuracy of an ouput signal

#66
20060103462
2006-05-18

Method and apparatus for opening a feedback loop

#67
20060062325
2006-03-23

Digital algorithm for on-line ACPR optimization in polar RF transmitters

#68
20060033568
2006-02-16

Predistortion linearizing

#69
20050231279
2005-10-20

Method and apparatus for adaptive digital predistortion using nonlinear and feedback gain parameters

#70
20050212594
2005-09-29

Power amplifier with pre-distorter

#71
20050168283
2005-08-04

Multi-band predistorter using power series representation

#72
20050163252
2005-07-28

Transmitter predistortion circuit and method therefor

#73
20050163251
2005-07-28

Predistortion circuit and method for compensating A/D and other distortion in a digital RF communications transmitter

#74
20050163250
2005-07-28

Distortion-managed digital RF communications transmitter and method therefor

#75
20050162225
2005-07-28

Multi-band look-up table type predistorter

#76
20050157814
2005-07-21

Wideband enhanced digital injection predistortion system and method

#77
20050073360
2005-04-07

Architecture and implementation methods of digital predistortion circuitry

#78
20050026574
2005-02-03

Pre-distortion cross-cancellation for linearizing power amplifiers

#79
16295001
2020-07-28

Crest factor reduction in cable communication systems