Patents-Review.com
ClassID:

219687 ⎘

H03F2200/57 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers Separate feedback of real and complex signals being present

Recent Application in this class:
#1
20250247765
2025-07-31

DISTRIBUTED ANTENNA SYSTEM

 #2
20240314668
2024-09-19

Distributed Antenna System

 #3
20230370937
2023-11-16

METHOD AND SYSTEM FOR BASEBAND PREDISTORTION LINEARIZATION IN MULTI-CHANNEL WIDEBAND COMMUNICATION SYSTEMS

 #4
20220115990
2022-04-14

POWER AMPLIFIER TIME-DELAY INVARIANT PREDISTORTION METHODS AND APPARATUS

 #5
20220007263
2022-01-06

METHOD AND SYSTEM FOR BASEBAND PREDISTORTION LINEARIZATION IN MULTI-CHANNEL WIDEBAND COMMUNICATION SYSTEMS

 #6
20210329527
2021-10-21

Distributed antenna system

 #7
20200313631
2020-10-01

Power amplifier time-delay invariant predistortion methods and apparatus

 #8
20200169937
2020-05-28

Method and system for baseband predistortion linearization in multi-channel wideband communication systems

 #9
20200092787
2020-03-19

Distributed antenna system

 #10
20200083914
2020-03-12

HIGH EFFICIENCY LINEARIZATION POWER AMPLIFIER FOR WIRELESS COMMUNICATION

 #11
20190181807
2019-06-13

Power amplifier time-delay invariant predistortion methods and apparatus

 #12
20190110239
2019-04-11

Distributed antenna system

 #13
20180279197
2018-09-27

METHOD AND SYSTEM FOR BASEBAND PREDISTORTION LINEARIZATION IN MULTI-CHANNEL WIDEBAND COMMUNICATION SYSTEMS

 #14
20180097530
2018-04-05

High efficiency linearization power amplifier for wireless communication

 #15
20170055198
2017-02-23

Distributed antenna system

 #16
20160269210
2016-09-15

Method and system for baseband predistortion linearization in multi-channel wideband communication systems

 #17
20160036394
2016-02-04

Power amplifier time-delay invariant predistortion methods and apparatus

 #18
20160014782
2016-01-14

Distributed antenna system

 #19
20150333710
2015-11-19

High efficiency linearization power amplifier for wireless communication

 #20
20150092830
2015-04-02

Method and system for baseband predistortion linearization in multi-channel wideband communication systems

 #21
20140313884
2014-10-23

Daisy-chained ring of remote units for a distributed antenna system

 #22
20140179248
2014-06-26

High efficiency linearization power amplifier for wireless communication

 #23
20140132346
2014-05-15

Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer

 #24
20130315291
2013-11-28

Method and system for baseband predistortion linearization in multi-channel wideband communications systems

 #25
20130272202
2013-10-17

Daisy-chained ring of remote units for a distributed antenna system

 #26
20130147550
2013-06-13

Power amplifier time-delay invariant predistortion methods and apparatus

 #27
20130137384
2013-05-30

Communication system with band, mode, impedance and linearization self-adjustment

 #28
20120230382
2012-09-13

Baseband-derived RF digital predistortion

 #29
20120230375
2012-09-13

Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer

 #30
20120147993
2012-06-14

Method and system for baseband predistortion linearization in multi-channel wideband communication systems

 #31
20120135695
2012-05-31

High efficiency linearization power amplifier for wireless communication

 #32
20120039254
2012-02-16

Daisy-chained ring of remote units for a distributed antenna system

 #33
20120001694
2012-01-05

Adaptive cartesian loop transmitter for broadband and optimal loop stability adjustment

 #34
20110227642
2011-09-22

Parallel forward path cartesian feedback loop and loop filter with switchable order for cartesian feedback loops

 #35
20110116558
2011-05-19

Wireless transmission apparatus using cartesian loop

 #36
20100283538
2010-11-11

Frequency offset Cartesian feedback system

 #37
20100232481
2010-09-16

Phase correcting apparatus and distortion compensating apparatus for radio transmitter

 #38
20090146736
2009-06-11

Baseband-derived RF digital predistortion

 #39
20090129446
2009-05-21

Method and apparatus for generating phase shifted local oscillator signals for a feedback loop on a transmitter

 #40
20090085658
2009-04-02

Analog power amplifier predistortion methods and apparatus

 #41
20090054016
2009-02-26

Apparatus and method for adaptive cartesian transmitter linearization and wireless transmitter employing the same

 #42
20080287077
2008-11-20

Method and apparatus for a cartesian error feedback circuit to correct distortion within a power amplifier

 #43
20080253477
2008-10-16

IQ-modulator pre-distortion

 #44
20080174365
2008-07-24

Power amplifier time-delay invariant predistortion methods and apparatus

 #45
20080170637
2008-07-17

Wireless communication unit, linearised transmitter circuit and method of linearising therein

 #46
20080152037
2008-06-26

Method and system for baseband predistortion linearization in multi-channel wideband communication systems

 #47
20080137772
2008-06-12

Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer

 #48
20070241812
2007-10-18

High efficiency linearization power amplifier for wireless communication

 #49
20070184789
2007-08-09

Cartesian loop transmitter and method of adjusting an output level of such transmitter

 #50
20060234654
2006-10-19

Wireless communication unit and linearised transmitter circuit therefor

 #51
20060050810
2006-03-09

Hybrid transmitter architecture having high efficiency and large dynamic range

 #52
20050123064
2005-06-09

Wireless communication unit linearised transmitter circuit and method of linearising therein

 #53
20050078768
2005-04-14

Adaptive phase controller, method of controlling a phase and transmitter employing the same