Patents-Review.com
ClassID:

219729 ⎘

H03F2203/21131 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by; Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers the input bias voltage of a power amplifier being controlled, e.g. by a potentiometer or an emitter follower

Recent Application in this class:
#1
20240213926
2024-06-27

MULTIPLE-MODE RF POWER AMPLIFIERS

 #2
20210367559
2021-11-25

Power amplifier circuit

 #3
20210344304
2021-11-04

Power amplifier module

 #4
20210249995
2021-08-12

Power amplifier apparatus

 #5
20210226589
2021-07-22

Power amplifier and power amplifier module

 #6
20200366251
2020-11-19

Amplifying device with bias timing control circuit based on duty cycle

 #7
20200186094
2020-06-11

Power amplifier module

 #8
20200127622
2020-04-23

Power amplifier circuit

 #9
20200106395
2020-04-02

DEVICES AND METHODS RELATED TO EMBEDDED SENSORS FOR DYNAMIC ERROR VECTOR MAGNITUDE CORRECTIONS

 #10
20200014343
2020-01-09

Multistage power amplifier with linearity compensating function

 #11
20190386619
2019-12-19

SYSTEMS, CIRCUITS AND METHODS FOR CORRECTING DYNAMIC ERROR VECTOR MAGNITUDE EFFECTS

 #12
20190165747
2019-05-30

APPARATUS AND METHOD FOR VOLTAGE DISTRIBUTION

 #13
20190140600
2019-05-09

Linear doherty power amplifier

 #14
20190058444
2019-02-21

Power amplifier module

 #15
20190006297
2019-01-03

High-power amplifier package

 #16
20180331661
2018-11-15

APPARATUS AND METHODS FOR POWER AMPLIFIER BIASING

 #17
20180234061
2018-08-16

Multi-mode power amplifier

 #18
20180191313
2018-07-05

Amplification circuit

 #19
20180062585
2018-03-01

Devices and methods related to embedded sensors for dynamic error vector magnitude corrections

 #20
20180026586
2018-01-25

Digital pre-distortion for multi-antenna systems

 #21
20170338776
2017-11-23

Systems, circuits and methods for correcting dynamic error vector magnitude effects

 #22
20170338194
2017-11-23

High-power amplifier package

 #23
20170310281
2017-10-26

Power amplifier module

 #24
20170279424
2017-09-28

Apparatus and method for variable voltage distribution

 #25
20170155366
2017-06-01

Apparatus and methods for power amplifier biasing

 #26
20160301366
2016-10-13

Power amplification module

 #27
20160294342
2016-10-06

CMOS RF switch device and method for biasing the same

 #28
20160294328
2016-10-06

Power amplifier module

 #29
20160252917
2016-09-01

Apparatus and methods for generating a variable regulated voltage

 #30
20160248386
2016-08-25

Apparatus and methods for power amplifier bias circuits

 #31
20160241213
2016-08-18

Power amplifier device and circuits

 #32
20160241138
2016-08-18

Boost converter having a buck supply voltage input

 #33
20160233842
2016-08-11

Devices and methods for improving yield of scalable periphery amplifiers

 #34
20160233835
2016-08-11

Multi-band/multi-mode power amplifier with signal path hardware sharing

 #35
20160211810
2016-07-21

Amplifying stage working point determination

 #36
20160181989
2016-06-23

Multi-mode power amplifier

 #37
20160099688
2016-04-07

Peak voltage limiting circuits and methods for power amplifiers

 #38
20160056881
2016-02-25

Multi-stage linearizer

 #39
20150303883
2015-10-22

Systems, circuits and methods related to dynamic error vector magnitude corrections

 #40
20150303882
2015-10-22

Devices and methods related to embedded sensors for dynamic error vector magnitude corrections

 #41
20150295541
2015-10-15

Circuits and methods for biasing a power amplifier

 #42
20150214908
2015-07-30

Power amplifier

 #43
20150180427
2015-06-25

Power amplification circuit and power amplification module

 #44
20150148095
2015-05-28

Multi-mode power amplifier

 #45
20150145606
2015-05-28

Power amplifier

 #46
20150137888
2015-05-21

Input clamping structure for sound quality improvement in car-radio class-AB power amplifier design

 #47
20150109058
2015-04-23

Doherty amplifier with peak branch RF conditioning

 #48
20150091654
2015-04-02

High voltage wide bandwidth amplifier

 #49
20150054583
2015-02-26

Power amplifier

 #50
20150035605
2015-02-05

Apparatus and methods for biasing power amplifiers

 #51
20150035601
2015-02-05

Split biased radio frequency power amplifier with enhanced linearity

 #52
20140253238
2014-09-11

Class AB amplifiers

 #53
20140015603
2014-01-16

Multi-band/multi-mode power amplifier with signal path hardware sharing

 #54
20120064852
2012-03-15

Low noise amplifier having both ultra-high linearity and low noise characteristic and radio receiver including the same

 #55
20110300899
2011-12-08

CMOS RF switch device and method for biasing the same

 #56
20110300898
2011-12-08

High linearity CMOS RF switch passing large signal and quiescent power amplifier current

 #57
20110298559
2011-12-08

Apparatus and method for directional coupling

 #58
20110298537
2011-12-08

Voltage distribution for controlling CMOS RF switch

 #59
20110298526
2011-12-08

Apparatus and method for disabling well bias

 #60
20110298523
2011-12-08

Apparatus and method for well buffering

 #61
20110298444
2011-12-08

Apparatus and method for diffusion sensing

 #62
20110298435
2011-12-08

APPARATUS AND METHOD FOR VOLTAGE DISTRIBUTION

 #63
20110298432
2011-12-08

APPARATUS AND METHOD FOR VARIABLE VOLTAGE FUNCTION

 #64
20110298280
2011-12-08

APPARATUS AND METHOD FOR VARIABLE VOLTAGE DISTRIBUTION

 #65
20110221530
2011-09-15

Class AB amplifiers

 #66
15467617
2018-05-01

Peaking amplifier frequency tuning