Patents-Review.com
ClassID:

219559 ⎘

H03F2200/21 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers Bias resistors are added at the input of an amplifier

Recent Application in this class:
#1
20260149421
2026-05-28

POWER AMPLIFIER BIAS CIRCUIT

 #2
20260089420
2026-03-26

MICROPHONE FOR CAPTURING SOUND

 #3
20260045918
2026-02-12

ENVELOPE TRACKING BIAS ADDER

 #4
20250286516
2025-09-11

RESISTIVE CIRCUIT THAT REDUCES INFLUENCE OF WELL BIAS EFFECT AND MANUFACTURING METHOD THEREOF AND AMPLIFIER CIRCUIT

 #5
20250260370
2025-08-14

Cascode Amplifier Bias Circuits

 #6
20250211178
2025-06-26

AMPLIFIER CIRCUIT

 #7
20250150035
2025-05-08

GATE DRIVERS FOR STACKED TRANSISTOR AMPLIFIERS

 #8
20250080056
2025-03-06

SEMICONDUCTOR DEVICE AND POWER AMPLIFICATION MODULE

 #9
20250024199
2025-01-16

Microphone amplifying circuit design method and microphone amplifying circuit

 #10
20240364274
2024-10-31

Bias Circuit for Stacked Power Amplifiers with a Variable Power Supply

 #11
20240348211
2024-10-17

Cascode amplifier bias circuits

 #12
20240235498
2024-07-11

BIAS CIRCUIT AND POWER AMPLIFIER

 #13
20240136985
2024-04-25

BIAS CIRCUIT AND POWER AMPLIFIER

 #14
20240039479
2024-02-01

Gate drivers for stacked transistor amplifiers

 #15
20230387864
2023-11-30

Cascode amplifier bias circuits

 #16
20230353099
2023-11-02

Bias techniques for amplifiers with mixed polarity transistor stacks

 #17
20230163733
2023-05-25

ULTRA-HIGH FREQUENCY AMPLIFIER

 #18
20230095390
2023-03-30

POWER AMPLIFIER BIAS CIRCUIT

 #19
20220368287
2022-11-17

Cascode amplifier bias circuits

 #20
20220182017
2022-06-09

Bias techniques for amplifiers with mixed polarity transistor stacks

 #21
20220158589
2022-05-19

Gate drivers for stacked transistor amplifiers

 #22
20220137106
2022-05-05

Potential measurement device

 #23
20210367557
2021-11-25

Amplifying circuit and amplifying device with start-up function

 #24
20210234518
2021-07-29

Low cost wideband tunable LNA

 #25
20210135628
2021-05-06

Power amplifier module

 #26
20210099132
2021-04-01

Amplifier device

 #27
20210075376
2021-03-11

Bias techniques for amplifiers with mixed polarity transistor stacks

 #28
20210044262
2021-02-11

Power amplifier circuit

 #29
20210013841
2021-01-14

Cascode amplifier bias circuits

 #30
20200358402
2020-11-12

Gate drivers for stacked transistor amplifiers

 #31
20200358401
2020-11-12

Power amplifier biasing network providing gain expansion

 #32
20200259466
2020-08-13

Amplifier

 #33
20200212861
2020-07-02

Programmable gain amplifier systems and methods

 #34
20200177135
2020-06-04

Cascode amplifier circuit

 #35
20200168734
2020-05-28

Self-biasing and self-sequencing of depletion mode transistors

 #36
20200136559
2020-04-30

Power amplifier module

 #37
20200091953
2020-03-19

Inrush current limiter circuits having current regulating switches therein

 #38
20200052653
2020-02-13

Amplifier, circuit for trimming a bias voltage, method for amplifying an input signal and method for trimming a bias voltage

 #39
20200028477
2020-01-23

Bias circuit for high efficiency complimentary metal oxide semiconductor (CMOS) power amplifiers

 #40
20200014344
2020-01-09

Power amplifier circuit

 #41
20200007089
2020-01-02

Low noise differential amplifier

 #42
20190386698
2019-12-19

Modified Current Mirror Circuit for Reduction of Switching Time

 #43
20190372531
2019-12-05

Amplifier with local feedback loop

 #44
20190363678
2019-11-28

Amplifier circuitry, voltage regulator circuit, and signal compensation method

 #45
20190312554
2019-10-10

Power amplifier circuit

 #46
20190280656
2019-09-12

Amplifier

 #47
20190273471
2019-09-05

Low noise differential amplifier

 #48
20190267950
2019-08-29

Adaptive multiband power amplifier apparatus

 #49
20190263712
2019-08-29

Process of using a submerged combustion melter to produce hollow glass fiber or solid glass fiber having entrained bubbles, and burners and systems to make such fibers

 #50
20190245085
2019-08-08

Self-biasing and self-sequencing of depletion-mode transistors

 #51
20190229684
2019-07-25

System and method for reducing output harmonics

 #52
20190199390
2019-06-27

Base station antennas having transmitters and receivers therein that support time division duplexing (TDD) with enhanced bias control for high speed switching

 #53
20190199293
2019-06-27

Power amplifying apparatus with wideband linearity

 #54
20190158031
2019-05-23

Cascode amplifier bias circuits

 #55
20190158029
2019-05-23

Gate drivers for stacked transistor amplifiers

 #56
20190149106
2019-05-16

OUTPUT CIRCUIT OF AMPLIFIER

 #57
20190149095
2019-05-16

Power amplifier circuit

 #58
20190068137
2019-02-28

Power amplifier and protection circuit for use in RF active circuit

 #59
20190068129
2019-02-28

Power amplifier circuit

 #60
20190068124
2019-02-28

Bias circuit and power amplifier circuit

 #61
20190036488
2019-01-31

Radio-frequency signal amplifier circuit, power amplifier module, front-end circuit, and communication device

 #62
20190020317
2019-01-17

Current-limiting circuit for a power amplifier

 #63
20180358933
2018-12-13

Power amplifier circuit

 #64
20180351593
2018-12-06

Apparatus for radio-frequency receiver with reduced power consumption and associated methods

 #65
20180342992
2018-11-29

Power amplifier circuit

 #66
20180316325
2018-11-01

Amplifier circuit that amplifies differential signal and optical module that includes amplifier circuit

 #67
20180316323
2018-11-01

Amplifier

 #68
20180302046
2018-10-18

Integrated gallium nitride power amplifier and switch

 #69
20180294809
2018-10-11

Bias circuit and power amplifier having the same

 #70
20180275709
2018-09-27

Bias circuit

 #71
20180269839
2018-09-20

Amplifier with nonlinearity compensation

 #72
20180262166
2018-09-13

Positive temperature coefficient bias compensation circuit

 #73
20180241348
2018-08-23

Audio amplifier and audio power amplifier

 #74
20180234054
2018-08-16

High-efficiency amplifying device and method for controlling power supply thereof

 #75
20180191312
2018-07-05

Amplifier

 #76
20180175807
2018-06-21

LNA with programmable linearity

 #77
20180131327
2018-05-10

Gate drivers for stacked transistor amplifiers

 #78
20180123529
2018-05-03

Adaptive multiband power amplifier apparatus

 #79
20180083578
2018-03-22

Cascode amplifier bias circuits

 #80
20180041195
2018-02-08

Buffer stage and control circuit

 #81
20180019713
2018-01-18

Power amplification module

 #82
20170288620
2017-10-05

Current reuse field effect transistor amplifier

 #83
20170257067
2017-09-07

Power amplifier circuit

 #84
20170214375
2017-07-27

Power amplification module

 #85
20170187336
2017-06-29

Amplifier with nonlinearity compensation

 #86
20170155367
2017-06-01

Power amplification module

 #87
20170085234
2017-03-23

Apparatus for performing capacitor amplification in an electronic device

 #88
20170085223
2017-03-23

Modified current mirror circuit for reduction of switching time

 #89
20170054415
2017-02-23

DIFFERENTIAL VOLTAGE REFERENCE BUFFER WITH RESISTOR CHOPPING

 #90
20170033750
2017-02-02

Boosting amplifier gain without clipping signal envelope

 #91
20160365859
2016-12-15

Wideband highly-linear low output impedance D2S buffer circuit

 #92
20160181997
2016-06-23

SIGNAL AMPLIFYING CIRCUIT

 #93
20160134245
2016-05-12

Bias circuit and power amplifier having the same

 #94
20160094195
2016-03-31

Voltage-to-current converter

 #95
20160056779
2016-02-25

Wideband bias circuits and methods

 #96
20150326188
2015-11-12

Cascode power amplifier

 #97
20150249435
2015-09-03

Analog amplifier for recovering abnormal operation of common mode feedback

 #98
20150070095
2015-03-12

Wideband bias circuits and methods

 #99
20150054587
2015-02-26

High-frequency power amplifier

 #100
20140368280
2014-12-18

Protection module for RF-amplifier

 #101
20130088378
2013-04-11

RF pulse signal generation switching circuit, RF pulse signal generating circuit, and target object detecting apparatus

 #102
20110292554
2011-12-01

Protection circuit for radio frequency power amplifier

 #103
20090167440
2009-07-02

Low noise amplifier

 #104
20080238551
2008-10-02

Amplifier circuit

 #105
20080061884
2008-03-13

Amplifier feedback and bias configuration

 #106
20070228988
2007-10-04

Vacuum tube circuit

 #107
20070090879
2007-04-26

Active input load wide bandwidth low noise HEMT amplifier

 #108
20060279470
2006-12-14

Series fed amplified antenna reflect array

 #109
18144492
2023-10-03

Bias circuit for radio frequency power amplifier

 #110
15993063
2019-08-27

Amplifier with common mode loop and chop

 #111
15268275
2017-12-12

Gate drivers for stacked transistor amplifiers

 #112
15216814
2018-01-09

Rotated field effect transistor topology amplifier