Patents-Review.com
ClassID:

219738 ⎘

H03F2203/21157 - 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 A filter circuit being added at the output of a power amplifier stage

Recent Application in this class:
#1
20260113005
2026-04-23

WIDE-RANGE SWITCHED-MODE POWER AMPLIFIER ARCHITECTURE

 #2
20250233559
2025-07-17

AMPLIFIER CIRCUIT, TRACKER MODULE, AMPLIFYING MODULE, AND COMMUNICATION DEVICE

 #3
20250183858
2025-06-05

AMPLIFIER WITH BYPASS MODE AND NOTCH FILTER

 #4
20240223132
2024-07-04

RECEIVING MODULE, PACKAGING STRUCTURE, PRINTED CIRCUIT BOARD, AND ELECTRONIC DEVICE

 #5
20230336204
2023-10-19

RADIO FREQUENCY CIRCUIT AND RADIO FREQUENCY MODULE

 #6
20230318542
2023-10-05

HIGH-FREQUENCY MODULE AND COMMUNICATION DEVICE

 #7
20230308053
2023-09-28

Dynamically biased power amplification

 #8
20230016198
2023-01-19

Multi-band power amplifier module

 #9
20220200534
2022-06-23

Dynamically biased power amplification

 #10
20220190784
2022-06-16

Amplification systems and methods with one or more channels

 #11
20220149799
2022-05-12

Non-isolated single-inductor circuit for outputting positive and negative low-voltage power

 #12
20220085779
2022-03-17

Semiconductor integrated circuit, receiving device, and DC offset cancellation method

 #13
20210273618
2021-09-02

Digital power amplifier with filtered output

 #14
20210226586
2021-07-22

Doherty power amplifier with integrated second harmonic injection

 #15
20210143776
2021-05-13

Radio-frequency amplifiers

 #16
20210075383
2021-03-11

Amplifier for a transceiver and a transceiver comprising such an amplifier

 #17
20200295719
2020-09-17

Amplification apparatus and transmission apparatus

 #18
20200195208
2020-06-18

Multi-band power amplifier module

 #19
20200129776
2020-04-30

Implantable cardioverter defibrillators using high power amplifiers with impedance tracking lowpass filters

 #20
20200051943
2020-02-13

High frequency module and communication device

 #21
20200051942
2020-02-13

Radio-frequency module and communication device

 #22
20190372531
2019-12-05

Amplifier with local feedback loop

 #23
20190348953
2019-11-14

Doherty power amplifier with integrated second harmonic injection

 #24
20190348951
2019-11-14

Amplification systems and methods with one or more channels

 #25
20190305734
2019-10-03

Differential power amplifier

 #26
20190296696
2019-09-26

Digital amplifier and output device

 #27
20190294295
2019-09-26

APPARATUS AND METHOD FOR REDUCING AMPLIFIER FEEDBACK CAPACITOR WITH BYPASS AMPLIFICATION STAGE

 #28
20190273523
2019-09-05

FILTERING TECHNIQUES

 #29
20190245494
2019-08-08

Power amplifier

 #30
20190229684
2019-07-25

System and method for reducing output harmonics

 #31
20190214945
2019-07-11

Power amplifiers having reduced loss

 #32
20190212403
2019-07-11

Gradient amplifier driver stage circuit, gradient amplifier system and control method thereof

 #33
20190207560
2019-07-04

Dynamically biased power amplification

 #34
20190190490
2019-06-20

Acoustically coupled resonator notch and bandpass filters

 #35
20190181907
2019-06-13

System and method for a radio frequency filter

 #36
20190181839
2019-06-13

System and method for a radio frequency filter

 #37
20190181837
2019-06-13

System and method for a radio frequency filter

 #38
20190181835
2019-06-13

Acoustically coupled resonator notch and bandpass filters

 #39
20190181834
2019-06-13

Acoustically coupled resonator notch and bandpass filters

 #40
20190181832
2019-06-13

System and method for a radio frequency filter

 #41
20190181827
2019-06-13

Tunable resonator element, filter circuit and method

 #42
20190181825
2019-06-13

System and method for a radio frequency filter

 #43
20190181824
2019-06-13

Tunable resonator element, filter circuit and method

 #44
20190140591
2019-05-09

Amplifiers for radio-frequency applications

 #45
20190115881
2019-04-18

Power amplifying device

 #46
20190097585
2019-03-28

Doherty power amplifier having high supply voltage

 #47
20190097582
2019-03-28

CIRCUITS, DEVICES AND METHODS RELATED TO POWER AMPLIFICATION WITHOUT MATCHING NETWORK

 #48
20190068135
2019-02-28

Tunable power amplifier with wide frequency range

 #49
20190020314
2019-01-17

RF amplifier with conductor-less region underlying filter circuit inductor, and methods of manufacture thereof

 #50
20180337643
2018-11-22

Multi-band power amplifier module

 #51
20180278217
2018-09-27

Amplifier, audio signal output method, and electronic device

 #52
20180262219
2018-09-13

Digital transmitter

 #53
20180190601
2018-07-05

High-frequency module

 #54
20180175798
2018-06-21

AREA EFFICIENT ARCHITECTURE TO COMBINE OUTPUTS OF PARALLEL TRANSMIT SIGNAL PATHS

 #55
20180062682
2018-03-01

Filtering architectures and methods for wireless applications

 #56
20180034383
2018-02-01

Inverter for inductive power transfer

 #57
20170346456
2017-11-30

Active RC filters

 #58
20170229765
2017-08-10

Multiport amplifiers (MPAs) using output filtering to improve performance over life

 #59
20170005628
2017-01-05

Tunable power amplifier with wide frequency range

 #60
20160373148
2016-12-22

SATELLITE RECEIVER AND SIGNAL RECEIVING CIRCUIT THEREOF

 #61
20160344348
2016-11-24

Amplification systems and methods with one or more channels

 #62
20160285418
2016-09-29

RF amplifier with conductor-less region underlying filter circuit inductor, and methods of manufacture thereof

 #63
20160248384
2016-08-25

Doherty power amplifier having reduced size

 #64
20160241207
2016-08-18

Multi-band power amplification system having enhanced efficiency through elimination of band selection switch

 #65
20160241205
2016-08-18

Reduced power amplifier size through elimination of matching network

 #66
20160241196
2016-08-18

Multi-band device having multiple miniaturized single-band power amplifiers

 #67
20160211871
2016-07-21

High frequency power amplifier, high frequency front-end circuit, and radio communication device

 #68
20160191003
2016-06-30

Transmission apparatus and transmission method

 #69
20160043698
2016-02-11

Tunable power amplifier with wide frequency range

 #70
20150333709
2015-11-19

POWER COMBINING CIRCUIT AND POWER COMBINING METHOD

 #71
20150326191
2015-11-12

Digital amplitude modulation device and digital amplitude modulation method

 #72
20150303879
2015-10-22

Multiple-series amplifying device

 #73
20150295552
2015-10-15

Input amplitude modulated outphasing with an unmatched combiner

 #74
20150194884
2015-07-09

Direct current (DC)-DC converter having a multi-stage output filter

 #75
20150188503
2015-07-02

Amplification systems and methods with one or more channels

 #76
20150155840
2015-06-04

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

 #77
20150077187
2015-03-19

Dynamic error vector magnitude duty cycle correction

 #78
20150054580
2015-02-26

Amplification systems and methods with one or more channels

 #79
20150054578
2015-02-26

Amplification systems and methods with one or more channels

 #80
20150054577
2015-02-26

Amplification systems and methods with one or more channels

 #81
20150035599
2015-02-05

Power amplifier and distributed filter

 #82
20140361831
2014-12-11

Amplifier device and method for activating an amplifier device or the amplifier unit

 #83
20140253247
2014-09-11

Power amplifying device and transmitter

 #84
20140073271
2014-03-13

System and method for transmitting a radio frequency signal through a speaker coil

 #85
20140055196
2014-02-27

Power amplifying apparatus for amplifying power and transmitter for transmitting signal by amplifying power

 #86
20130314163
2013-11-28

Integrated stacked power amplifier and RF switch architecture

 #87
20130293310
2013-11-07

Dual inductive element charge pump buck and buck power supplies

 #88
20130271224
2013-10-17

Multiband RF switch ground isolation

 #89
20130271221
2013-10-17

Direct current (DC)-DC converter having a multi-stage output filter

 #90
20130217341
2013-08-22

High efficiency path based power amplifier circuitry

 #91
20130177106
2013-07-11

Multiple functional equivalence digital communications interface

 #92
20130165060
2013-06-27

Architecture of nonlinear RF filter-based transmitter

 #93
20130147445
2013-06-13

Voltage multiplier charge pump buck

 #94
20130135052
2013-05-30

Interference reduction between RF communications bands

 #95
20130043944
2013-02-21

Cascaded converged power amplifier

 #96
20120302186
2012-11-29

Independent PA biasing of a driver stage and a final stage

 #97
20120299661
2012-11-29

PA bias power supply undershoot compensation

 #98
20120299660
2012-11-29

Selecting PA bias levels of RF PA circuitry during a multislot burst

 #99
20120299647
2012-11-29

PA envelope power supply undershoot compensation

 #100
20120299646
2012-11-29

Selecting a converter operating mode of a PA envelope power supply

 #101
20120299645
2012-11-29

Temperature correcting an envelope power supply signal for RF PA circuitry

 #102
20120287952
2012-11-15

APPARATUS AND METHODS FOR HIGH VOLTAGE AMPLIFICATION WITH LOW NOISE

 #103
20120282869
2012-11-08

RF PA linearity requirements based converter operating mode selection

 #104
20120280752
2012-11-08

Embedded RF PA temperature compensating bias transistor

 #105
20120280747
2012-11-08

Feedback based buck timing of a direct current (DC)-DC converter

 #106
20120280746
2012-11-08

DC-DC converter semiconductor die structure

 #107
20120236960
2012-09-20

Quadrature communications device with I antennas and Q antennas and related methods

 #108
20120235736
2012-09-20

Charge pump based power amplifier envelope power supply and bias power supply

 #109
20120229210
2012-09-13

Overlay class F choke

 #110
20120223774
2012-09-06

Look-up table based configuration of multi-mode multi-band radio frequency power amplifier circuitry

 #111
20120223773
2012-09-06

Linear mode and non-linear mode quadrature PA circuitry

 #112
20120207252
2012-08-16

Frequency correction of a programmable frequency oscillator by propagation delay compensation

 #113
20120184233
2012-07-19

Combined RF detector and RF attenuator with concurrent outputs

 #114
20120170690
2012-07-05

Auto configurable 2/3 wire serial interface

 #115
20120161877
2012-06-28

PA bias power supply efficiency optimization

 #116
20120133442
2012-05-31

Radiofrequency amplifier

 #117
20120098595
2012-04-26

Quadrature power amplifier architecture

 #118
20120056676
2012-03-08

RF amplifier with digital filter for polar transmitter

 #119
20110316637
2011-12-29

Amplifier module with multiple operating modes

 #120
20110250854
2011-10-13

Reconfigurable wireless transmission system

 #121
20110241782
2011-10-06

Power amplifier

 #122
20110230149
2011-09-22

RF power amplifier device and wireless communication terminal device

 #123
20110175680
2011-07-21

Wireless communication device and semiconductor package device having a power amplifier therefor

 #124
20110163813
2011-07-07

Amplifier circuit

 #125
20110096766
2011-04-28

CURRENT CONSUMPTION REDUCTION WITH LOW POWER AMPLIFIER

 #126
20110032035
2011-02-10

Amplifier module with multiple operating modes

 #127
20100277215
2010-11-04

Wideband voltage translators

 #128
20100272214
2010-10-28

Outphasing amplification of digital modulated signals in a radiofrequency transmission system

 #129
20100225398
2010-09-09

Multi-path, multi-oxide-thickness amplifier circuit

 #130
20100148866
2010-06-17

Systems and methods for power amplifiers with voltage boosting multi-primary transformers

 #131
20100097153
2010-04-22

Switched modulation of a radio-frequency amplifier

 #132
20100019858
2010-01-28

N:M TRANSFORMER AND IMPEDANCE MATCHING

 #133
20100019857
2010-01-28

HYBRID IMPEDANCE MATCHING

 #134
20090295474
2009-12-03

Device with shared power amplifiers, for use in a wireless telecommunications system

 #135
20090140814
2009-06-04

RF power amplifier

 #136
20090103673
2009-04-23

SIGNAL POWER COMBINER WITH DYNAMIC PHASE COMPENSATION

 #137
20080164941
2008-07-10

Systems and methods for power amplifiers with voltage boosting multi-primary transformers

 #138
20080132176
2008-06-05

Transceiver for reducing current consumption in a wireless communications network

 #139
20080130786
2008-06-05

Current consumption reduction with low power amplifier

 #140
20080125061
2008-05-29

RF power amplifying device and wireless communication terminal device

 #141
20080101802
2008-05-01

Receiving apparatus and electronic device using the same

 #142
20070111685
2007-05-17

Parallel power amplifier and associated methods

 #143
20060290444
2006-12-28

Power amplifier utilizing quadrature hybrid for power dividing, combining and impedance matching

 #144
20060001484
2006-01-05

Parallel power amplifier and associated methods

 #145
15993063
2019-08-27

Amplifier with common mode loop and chop

 #146
15444233
2017-12-19

Wireless communication device and wireless communication method

 #147
14730142
2017-09-19

Memory effect reduction using low impedance cascode biasing