Patents-Review.com
ClassID:

219490 ⎘

H03F3/601 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements; Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators using FET's, e.g. GaAs FET's

Recent Application in this class:
#1
20260012149
2026-01-08

HARMONIC PROCESSING CIRCUIT AND AMPLIFIER

 #2
20250119103
2025-04-10

HARMONIC PROCESSING CIRCUIT AND AMPLIFIER

 #3
20240282725
2024-08-22

POWER AMPLIFIER

 #4
20230107916
2023-04-06

HIGH FREQUENCY CIRCUIT

 #5
20230055602
2023-02-23

Apparatus Comprising a Transmission Line for Radio Frequency Signals

 #6
20220337204
2022-10-20

High frequency amplifier

 #7
20220131504
2022-04-28

Harmonic processing circuit and amplifier

 #8
20200295716
2020-09-17

Radio frequency circuit

 #9
20190341887
2019-11-07

Reconfigurable low-noise amplifier (LNA)

 #10
20190326863
2019-10-24

Power amplifier

 #11
20190238102
2019-08-01

Amplification device and electromagnetic wave irradiating device

 #12
20190207574
2019-07-04

Amplifier with amplification stages connected in parallel

 #13
20190173435
2019-06-06

Wideband power amplifiers with harmonic traps

 #14
20190173431
2019-06-06

Amplifiers with in-package radial stub harmonic traps

 #15
20190165737
2019-05-30

Nested microstrip system and method

 #16
20190158043
2019-05-23

Integrated CMOS transmit/receive switch in a radio frequency device

 #17
20190140609
2019-05-09

Hybrid variable gain amplifier

 #18
20190131937
2019-05-02

High-frequency power amplifier

 #19
20190088642
2019-03-21

RF amplifier package with biasing strip

 #20
20180175801
2018-06-21

Inter-stage network for radio frequency amplifier

 #21
20180102745
2018-04-12

Low-noise amplifier and electronic device

 #22
20180091099
2018-03-29

Reconfigurable low-noise amplifier (LNA)

 #23
20180083582
2018-03-22

Microwave semiconductor device

 #24
20180026619
2018-01-25

Power source supply circuit, amplifier, communication device, base station, and power source supply method

 #25
20170347195
2017-11-30

High current low-cost DC coupled DAC follower low pass filter headphone amplifier

 #26
20170346451
2017-11-30

Switchless line-DI/Mic pre-amplifier input

 #27
20170346450
2017-11-30

Pre-amplifier circuit including microphone pre-amplifier stage

 #28
20170288623
2017-10-05

Current reuse amplifier

 #29
20170279364
2017-09-28

Regeneration circulator, high-frequency power supply device, and high-frequency power regeneration method

 #30
20160269008
2016-09-15

Power splitter with programmable output phase shift

 #31
20160248469
2016-08-25

Dynamic tuning of a transformer-based radio frequency power amplifier

 #32
20160233839
2016-08-11

Low noise amplifier

 #33
20160226553
2016-08-04

Integrated CMOS transmit/receive switch in a radio frequency device

 #34
20160226552
2016-08-04

Transmit-receive isolation in a transformer-based radio frequency power amplifier

 #35
20160204744
2016-07-14

Amplifying device and radio communication device

 #36
20160197589
2016-07-07

Inverse class F amplifiers with intrinsic capacitance compensation

 #37
20160056768
2016-02-25

Amplifier

 #38
20150371770
2015-12-24

Broadband power amplifier having high efficiency

 #39
20150349397
2015-12-03

Resonating filter and method thereof

 #40
20150326188
2015-11-12

Cascode power amplifier

 #41
20150263678
2015-09-17

Power amplifier and power amplification method

 #42
20150236657
2015-08-20

Amplifier circuit

 #43
20150229283
2015-08-13

Broadband amplifier

 #44
20150222231
2015-08-06

Microwave amplifier device

 #45
20150207491
2015-07-23

Device for negative group delay

 #46
20150171799
2015-06-18

Signal path termination

 #47
20150116037
2015-04-30

Variable matching circuit and amplifier

 #48
20140225671
2014-08-14

High efficiency power amplifier

 #49
20140191809
2014-07-10

Radio frequency amplifier circuit

 #50
20130321080
2013-12-05

CMOS linear differential distributed amplifier and distributed active balun

 #51
20130194042
2013-08-01

Multi-stage amplifier using tunable transmission lines and frequency response calibration of same

 #52
20130176079
2013-07-11

Radio frequency power amplifier

 #53
20130154747
2013-06-20

Millimeter wave power amplifier

 #54
20130099797
2013-04-25

Variable impedance device

 #55
20130069726
2013-03-21

Power amplification apparatus

 #56
20130029619
2013-01-31

Signal path termination

 #57
20130001662
2013-01-03

Semiconductor device having first and second resistance for suppressing loop oscillation

 #58
20120306578
2012-12-06

RF AMPLIFIER WITH OPEN CIRCUIT OUTPUT OFF-STATE

 #59
20120280753
2012-11-08

System and method for adjusting gain frequency response of RF power amplifier

 #60
20120268211
2012-10-25

Power amplifier

 #61
20120218040
2012-08-30

Class-AB power amplifier

 #62
20120169431
2012-07-05

Microwave harmonic processing circuit

 #63
20120169423
2012-07-05

Radio frequency amplifier circuit

 #64
20120133441
2012-05-31

Electronic circuit

 #65
20120133436
2012-05-31

Power amplifier and MMIC using the same

 #66
20120105169
2012-05-03

Electronic circuit

 #67
20120086519
2012-04-12

Impedance-matching circuits for multi-output power supplies driving COgas-discharge lasers

 #68
20110181363
2011-07-28

Electronic circuit

 #69
20110140787
2011-06-16

Method and system for amplifying a signal using a transformer matched transistor

 #70
20110140772
2011-06-16

Self-healing power amplifier: methods and apparatus

 #71
20110081873
2011-04-07

Filter, transmitter-receiver, and amplifying circuit

 #72
20110068882
2011-03-24

FILTER AND AMPLIFYING CIRCUIT

 #73
20110031571
2011-02-10

Wireless communication unit and semiconductor device having a power amplifier therefor

 #74
20110012681
2011-01-20

Low distortion amplifier and Doherty amplifier using low distortion amplifier

 #75
20110001173
2011-01-06

Monolithically integrated antenna and receiver circuit for the detection of terahertz waves

 #76
20100283544
2010-11-11

Harmonic processing circuit and amplifying circuit using the same

 #77
20100148858
2010-06-17

BIAS CIRCUIT

 #78
20100102885
2010-04-29

Method and system for amplifying a signal using a transformer matched transistor

 #79
20100090767
2010-04-15

RF amplification device

 #80
20090175378
2009-07-09

System and Method for Impedance Mismatch Compensation in Digital Communications Systems

 #81
20090102553
2009-04-23

Doherty amplifier

 #82
20090008774
2009-01-08

Semiconductor device

 #83
20080278260
2008-11-13

Matching circuit

 #84
20080258815
2008-10-23

HIGH FREQUENCY POWER AMPLIFIER AND WIRELESS PORTABLE TERMINAL USING THE SAME

 #85
20080231373
2008-09-25

Output Circuit

 #86
20080231367
2008-09-25

Amplifier

 #87
20080007357
2008-01-10

High frequency stabilization network for microwave devices and monolithic integrated circuits

 #88
20070115065
2007-05-24

Stabilization circuit and multiband amplification circuit

 #89
20070034946
2007-02-15

Semiconductor device

 #90
20070024369
2007-02-01

Current-controlled CMOS (C3MOS) wideband input data amplifier for reduced differential and common-mode reflection

 #91
20070023897
2007-02-01

Semiconductor device, power amplifier device and PC card

 #92
20060214730
2006-09-28

Transmission amplifier

 #93
20060076620
2006-04-13

Semiconductor device

 #94
20050248407
2005-11-10

Traveling wave amplifier

 #95
20050236689
2005-10-27

High-frequency amplification device

 #96
20050208905
2005-09-22

High frequency power amplifier module, and wireless communication system

 #97
20050003573
2005-01-06

Field-effect type semiconductor device for power amplifier