ClassID:

219734

H03F2203/21145 - 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 Output signals are combined by switching a plurality of paralleled power amplifiers to a common output

Recent Application in this class:
#1
20260045915
2026-02-12

AMPLIFIER CIRCUIT

#2
20220190784
2022-06-16

Amplification systems and methods with one or more channels

#3
20210273618
2021-09-02

Digital power amplifier with filtered output

#4
20200259472
2020-08-13

Biasing an amplifier using a mirror bias signal

#5
20200195211
2020-06-18

Amplitude sweep generator and method

#6
20200127619
2020-04-23

DEVICES AND METHODS RELATED TO VARIABLE LOAD POWER AMPLIFIER SUPPORTING DUAL-MODE ENVELOPE TRACKING AND AVERAGE POWER TRACKING PERFORMANCE

#7
20200106395
2020-04-02

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

#8
20200014341
2020-01-09

High frequency module and communication device

#9
20190386619
2019-12-19

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

#10
20190386616
2019-12-19

Front-end for processing 2G signal using 3G/4G paths

#11
20190356286
2019-11-21

POWER DENSITY MATCHING CIRCUITS FOR POWER AMPLIFIERS

#12
20190348951
2019-11-14

Amplification systems and methods with one or more channels

#13
20190273523
2019-09-05

FILTERING TECHNIQUES

#14
20190273470
2019-09-05

CURRENT CONTROL USING POWER CELL ISOLATION

#15
20190131936
2019-05-02

HIGH AND LOW VOLTAGE LIMITED POWER AMPLIFICATION SYSTEM

#16
20180375474
2018-12-27

Power amplifier circuit

#17
20180309410
2018-10-25

DC-to-DC converter block, converter, and envelope tracking system

#18
20180287573
2018-10-04

Variable load power amplifier supporting dual-mode envelope tracking and average power tracking performance

#19
20180226982
2018-08-09

Broadband digital beam forming system including wavefront multiplexers and narrowband digital beam forming modules

#20
20180226925
2018-08-09

Power amplifier bias circuit with a mirror device to provide a mirror bias signal

#21
20180159487
2018-06-07

Power amplifier configurations with power density matching

#22
20180076773
2018-03-15

Methods for multi-path amplifiers and multi-path amplifier

#23
20180062682
2018-03-01

Filtering architectures and methods for wireless applications

#24
20180062585
2018-03-01

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

#25
20180062580
2018-03-01

Output power cell for cascode amplifiers

#26
20170373746
2017-12-28

Flexible multi-channel amplifiers via wavefront muxing techniques

#27
20170338776
2017-11-23

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

#28
20170244368
2017-08-24

High and low voltage limited power amplification system

#29
20170244366
2017-08-24

Driver circuit for composite power amplifier

#30
20170063389
2017-03-02

Broadband digital beam forming system including wavefront multiplexers and narrowband digital beam forming modules

#31
20170040953
2017-02-09

Systems and methods related to linear and efficient broadband power amplifiers

#32
20160344348
2016-11-24

Amplification systems and methods with one or more channels

#33
20160276987
2016-09-22

Combined high power RF/microwave amplifier with multiple power amplifier units and automatic failure protection

#34
20160191105
2016-06-30

Circuits and methods for 2G amplification using 3G/4G linear path combination

#35
20160112027
2016-04-21

RF/microwave power divider with port to port isolation

#36
20160112021
2016-04-21

RF/microwave high power switching combiner unit

#37
20160112020
2016-04-21

Combined high power rf/microwave amplifier with multiple power amplifier units and automatic failure protection

#38
20160112013
2016-04-21

T-shaped power amplifier cooling plate

#39
20160112008
2016-04-21

Bias circuitry for power amplifiers

#40
20160105151
2016-04-14

Switchable dual core power amplifier

#41
20160094192
2016-03-31

Variable load power amplifier supporting dual-mode envelope tracking and average power tracking performance

#42
20160094189
2016-03-31

Power amplifier bias circuit

#43
20160028353
2016-01-28

Systems, circuits and methods related to low power efficiency improvement in multi-mode multi-band power amplifiers

#44
20160006400
2016-01-07

Distributed power amplifier circuit

#45
20150303883
2015-10-22

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

#46
20150303882
2015-10-22

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

#47
20150249462
2015-09-03

System for processing data streams

#48
20150214907
2015-07-30

System, method and device for power amplification of a signal in an integrated circuit

#49
20150188503
2015-07-02

Amplification systems and methods with one or more channels

#50
20150171797
2015-06-18

Linearity performance for multi-mode power amplifiers

#51
20150155840
2015-06-04

Multiple-state, switch-mode power amplifier systems and methods of their operation

#52
20150054578
2015-02-26

Amplification systems and methods with one or more channels

#53
20150015338
2015-01-15

Power amplifier

#54
20140113578
2014-04-24

Amplifiers with noise splitting

#55
20140022984
2014-01-23

Flexible multi-channel amplifiers via wavefront muxing techniques

#56
20130135043
2013-05-30

Multimode RF amplifier system

#57
20120319885
2012-12-20

System for processing data streams

#58
20120319772
2012-12-20

Flexible multi-channel amplifiers via wavefront muxing techniques

#59
20120207252
2012-08-16

Frequency correction of a programmable frequency oscillator by propagation delay compensation

#60
20120139628
2012-06-07

Method and arrangement in a mobile communications system

#61
20120126886
2012-05-24

Method and arrangement in a mobile communication system

#62
20120063545
2012-03-15

Method and system for enhancing efficiency by modulating power amplifier gain

#63
20120056676
2012-03-08

RF amplifier with digital filter for polar transmitter

#64
20110316628
2011-12-29

Complimentary single-ended-input OTA-C universal filter structures

#65
20110304397
2011-12-15

High efficiency audio amplifier system

#66
20110263213
2011-10-27

AMPLIFYING A TRANSMIT SIGNAL USING A FRACTIONAL POWER AMPLIFIER

#67
20110250854
2011-10-13

Reconfigurable wireless transmission system

#68
20110241782
2011-10-06

Power amplifier

#69
20110070848
2011-03-24

Dynamic stability, gain, efficiency and impedance control in a linear/non-linear CMOS power amplifier

#70
20110006841
2011-01-13

Switchable balanced amplifier

#71
20110001564
2011-01-06

Variable gain amplifier

#72
20100289570
2010-11-18

Amplifier circuit, electronic device, method for configuring an amplifier circuit

#73
20100277237
2010-11-04

Switchable power combiner

#74
20100237949
2010-09-23

Method and system for enhancing efficiency by modulating power amplifier gain

#75
20100167671
2010-07-01

Wireless Communication Apparatus and Transmission Control Method Thereof

#76
20090201085
2009-08-13

Power amplifying apparatus and mobile communication terminal

#77
20080231358
2008-09-25

Power amplifier circuit

#78
20080150636
2008-06-26

Differential amplifier with a plurality of input pairs

#79
20080137773
2008-06-12

Method and system for enhancing efficiency by modulating power amplifier gain

#80
20080123881
2008-05-29

Circuit arrangement for adjusting the output power and/or the frequency response of a power amplifier for a hearing aid device

#81
20080055001
2008-03-06

Power amplifying apparatus and mobile communication terminal

#82
20080048779
2008-02-28

ACTIVE EMI SUPPRESSION CIRCUIT

#83
20080036533
2008-02-14

Multi-path doherty amplifier and control method of a multi-path doherty amplifier

#84
20080024211
2008-01-31

Multi-operational amplifier system

#85
20070210863
2007-09-13

Multi-channel amplifier with reduced overall power emission, and circuit management including same

#86
20070171997
2007-07-26

Method and apparatus for control of transmitter power consumption

#87
20070135067
2007-06-14

Apparatus for configuring portable communication system using multipath power amplifier

#88
20070129030
2007-06-07

High dynamic range pre-power amplifier incorporating digital attenuator

#89
20070129029
2007-06-07

Pre-power amplifier of load, switch array, and impedance compensation

#90
20070120599
2007-05-31

Multi-operational amplifier system

#91
20070096827
2007-05-03

MULTI CONTROLLED OUTPUT LEVELS CMOS POWER AMPLIFIER (PA)

#92
20070046371
2007-03-01

Power amplifier

#93
20050162230
2005-07-28

Multi-operational amplifier system

#94
20050088253
2005-04-28

Switchable combiner and integrated combining apparatus for using it