Patents-Review.com
ClassID:

219672 ⎘

H03F2200/516 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers Some amplifier stages of an amplifier use supply voltages of different value

Recent Application in this class:
#1
20220311385
2022-09-29

Power amplifier circuit

 #2
20200304070
2020-09-24

Power amplifier

 #3
20200195199
2020-06-18

Configurable switched power amplifier for efficient high/low output power

 #4
20200162044
2020-05-21

Driver circuit and operational amplifier circuit used therein

 #5
20200144965
2020-05-07

Power amplifier circuit

 #6
20200136513
2020-04-30

Supply modulator for power amplifier

 #7
20200106403
2020-04-02

RADIO FREQUENCY AMPLIFIERS WITH AN INJECTION-LOCKED OSCILLATOR DRIVER STAGE AND A STACKED OUTPUT STAGE

 #8
20200067406
2020-02-27

Method of modifying a supply voltage to a power amplifier based on estimated number of resource blocks

 #9
20200044610
2020-02-06

Power supply signal generation

 #10
20190326857
2019-10-24

Power amplifier circuit

 #11
20190253029
2019-08-15

Driver circuit and operational amplifier circuit used therein

 #12
20190245524
2019-08-08

Buffer amplifier

 #13
20190109565
2019-04-11

Power amplifier module

 #14
20190097594
2019-03-28

POWER AMPLIFIERS WITH INJECTION-LOCKED OSCILLATOR

 #15
20190074769
2019-03-07

Supply modulator for power amplifier

 #16
20190068147
2019-02-28

Driver circuit and optical transmitter

 #17
20180360426
2018-12-20

Multi-stage trans-impedance amplifier (TIA) for an ultrasound device

 #18
20180351454
2018-12-06

System efficiency improvement for cellular signals

 #19
20180323761
2018-11-08

Output circuit

 #20
20180309412
2018-10-25

Power amplification circuit

 #21
20180302043
2018-10-18

Control circuit, control method, and electronic device

 #22
20180294785
2018-10-11

Driver circuit and operational amplifier circuit used therein

 #23
20180294779
2018-10-11

Dynamically configurable bias circuit for controlling gain expansion of multi-mode, single chain linear power amplifiers

 #24
20180287562
2018-10-04

Power amplifier circuit

 #25
20180248522
2018-08-30

Operational amplifier, corresponding circuit, apparatus and method

 #26
20180226923
2018-08-09

Power amplifier circuit and high-frequency module

 #27
20180219516
2018-08-02

Radio frequency amplifiers with an injection-locked oscillator driver stage and a stacked output stage

 #28
20180102743
2018-04-12

Modular and scalable power amplifier system

 #29
20180069516
2018-03-08

Method and apparatus for supplying power to an amplifier

 #30
20180041169
2018-02-08

Power amplifier

 #31
20170324388
2017-11-09

Apparatus and methods for power amplifiers with an injection-locked oscillator driver stage

 #32
20170317650
2017-11-02

Power amplification circuit

 #33
20170237400
2017-08-17

Power amplifier

 #34
20170230018
2017-08-10

Receiver circuit and system using the same

 #35
20170214368
2017-07-27

Power amplifier circuit and operating method thereof

 #36
20170179887
2017-06-22

Generating power supply signals for a plurality of RF power amplifiers

 #37
20170163223
2017-06-08

Power amplification circuit

 #38
20170093340
2017-03-30

Apparatus and methods for capacitive load reduction in a mobile device

 #39
20170040957
2017-02-09

Power amplifier having stack structure

 #40
20170005629
2017-01-05

Average power tracking mode power amplifier using dual bias voltage levels

 #41
20160190990
2016-06-30

Concurrent dual-band signal amplifier

 #42
20160173036
2016-06-16

Multiple range RF amplifier

 #43
20160134242
2016-05-12

Power amplifier

 #44
20160134241
2016-05-12

Power amplifier

 #45
20160118943
2016-04-28

Apparatus and methods for capacitive load reduction of an envelope tracker

 #46
20160087589
2016-03-24

Amplifier with base current reuse

 #47
20160049908
2016-02-18

Radio-frequency amplifier circuit and control voltage setting method for radio-frequency amplifier circuit

 #48
20160036395
2016-02-04

Apparatus and methods for overdrive protection of radio frequency amplifiers

 #49
20160006400
2016-01-07

Distributed power amplifier circuit

 #50
20150381401
2015-12-31

Switched capacitor transmitter circuits and methods

 #51
20150381215
2015-12-31

Switched capacitor transmitter circuits and methods

 #52
20150372650
2015-12-24

Audio driver system and method

 #53
20150311874
2015-10-29

Broadband power amplifier systems and methods

 #54
20150301362
2015-10-22

Integrated driver and related method

 #55
20150279467
2015-10-01

Amplifier stage

 #56
20150200690
2015-07-16

Inter carrier-aggregation isolation in a receiver

 #57
20150194935
2015-07-09

Amplifier

 #58
20150171804
2015-06-18

Power amplifier having stack structure

 #59
20150145603
2015-05-28

System linearization assembly and method for use in modifying distortion components

 #60
20150145600
2015-05-28

Circuits and methods for power amplification with extended high efficiency

 #61
20150002232
2015-01-01

Power supply device for high frequency power amplification circuit and high frequency power amplification device

 #62
20140375385
2014-12-25

Differential amplifier circuit

 #63
20140312977
2014-10-23

Apparatus and methods for reducing capacitive loading of an envelope tracker

 #64
20140312970
2014-10-23

Power supply circuit

 #65
20140301570
2014-10-09

Voice alarm amplifier

 #66
20140084998
2014-03-27

Apparatus and methods for capacitive load reduction

 #67
20140043098
2014-02-13

Mobile device including a power amplifier with selectable voltage supply

 #68
20130308893
2013-11-21

Integrated driver and related method

 #69
20130257535
2013-10-03

Fully differential amplifier topology to drive dynamic speakers in class AB mode

 #70
20130094607
2013-04-18

Transmitter employing pulling mitigation mechanism and related method thereof

 #71
20130094606
2013-04-18

Multi-stage digitally-controlled power amplifier

 #72
20130043877
2013-02-21

Operational amplifier with different power supply voltages

 #73
20120299657
2012-11-29

Multi-mode power amplifier

 #74
20120286859
2012-11-15

Input common mode voltage compensation circuit

 #75
20120235749
2012-09-20

Doherty amplifier

 #76
20120229214
2012-09-13

Amplifier circuit and method

 #77
20120187765
2012-07-26

POWER SUPPLY ARRANGEMENT FOR LINE TERMINATION UNITS

 #78
20120176195
2012-07-12

Asymmetric multilevel outphasing architecture for RF amplifiers

 #79
20120146731
2012-06-14

Apparatus and methods for capacitive load reduction

 #80
20120142304
2012-06-07

Power Amplifiers for Wireless Systems

 #81
20120139641
2012-06-07

Apparatus and methods for capacitive load reduction

 #82
20120094727
2012-04-19

POWER AMPLIFICATION CIRCUIT AND COMMUNICATION APPARATUS

 #83
20120025914
2012-02-02

CMOS power amplifier

 #84
20120002819
2012-01-05

Audio driver system and method

 #85
20120001690
2012-01-05

System for driver amplifier

 #86
20110241782
2011-10-06

Power amplifier

 #87
20110215866
2011-09-08

Asymmetric multilevel outphasing architecture for RF amplifiers

 #88
20110102084
2011-05-05

Multi-stage CMOS power amplifier

 #89
20110095829
2011-04-28

Headphone amplifier circuit

 #90
20110090008
2011-04-21

Power amplification apparatus and power amplification method

 #91
20110063036
2011-03-17

Operational amplifier

 #92
20100246858
2010-09-30

Amplifier circuit

 #93
20100237948
2010-09-23

System and method for dynamic drain voltage adjustment to control linearity, output power, and efficiency in RF power amplifiers

 #94
20100151805
2010-06-17

RADIO FREQUENCY CIRCUIT

 #95
20100117727
2010-05-13

Asymmetric multilevel outphasing architecture for RF amplifiers

 #96
20100097148
2010-04-22

Headphone amplifier circuit

 #97
20090279713
2009-11-12

Multi-voltage headphone drive circuit

 #98
20090251001
2009-10-08

Semiconductor circuit

 #99
20090179876
2009-07-16

Buffer amplifier with minimized power consumption and display driver including the same

 #100
20090146741
2009-06-11

High-frequency amplifier, high-frequency module, and mobile wireless apparatus using the same

 #101
20090002070
2009-01-01

Methods and apparatus to control rail-to-rail class AB amplifiers

 #102
20080315955
2008-12-25

Class L amplifier

 #103
20080258811
2008-10-23

Distributed class G type amplifier switching method

 #104
20080211583
2008-09-04

System and method for dynamic drain voltage adjustment to control linearity, output power, and efficiency in RF power amplifiers

 #105
20080175335
2008-07-24

Transmission circuit comprising multistage amplifier, and communication device

 #106
20080174372
2008-07-24

Multi-stage amplifier with multiple sets of fixed and variable voltage rails

 #107
20080007337
2008-01-10

Distributed class G type amplifier switching method

 #108
20070236294
2007-10-11

Class L amplifier

 #109
20070171997
2007-07-26

Method and apparatus for control of transmitter power consumption

 #110
20070139105
2007-06-21

Doherty amplifier configuration for a collector controlled power amplifier

 #111
20070115053
2007-05-24

Method and arrangement for optimizing efficiency of a power amplifier

 #112
20070024372
2007-02-01

Method and apparatus for controlling a power amplifier supply voltage

 #113
20070018726
2007-01-25

Differential circuit, output buffer circuit and semiconductor integrated circuit for a multi-power system

 #114
20070001717
2007-01-04

Driver circuit

 #115
20060267915
2006-11-30

Data driver capable of an offset compensation and display apparatus having the same

 #116
20050156668
2005-07-21

Amplifier, data driver and display apparatus having the same

 #117
20050083126
2005-04-21

Method and circuit for a dual supply amplifier