Patents-Review.com
ClassID:

219645 ⎘

H03F2200/444 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers Diode used as protection means in an amplifier, e.g. as a limiter or as a switch

Recent Application in this class:
#1
20260121592
2026-04-30

AMPLIFIER DEVICE WITH FEEDBACK AND FEED-FORWARD CONTROL

 #2
20260012143
2026-01-08

AMPLIFIER WITH INPUT POWER PROTECTION

 #3
20250350248
2025-11-13

POWER AMPLIFIER WITH CLAMP AND FEEDBACK PROTECTION CIRCUITRY

 #4
20250300606
2025-09-25

Diode-Based Protection Circuit

 #5
20250253811
2025-08-07

VOLTAGE LIMITING CIRCUIT AND METHOD FOR A POWER AMPLIFIER

 #6
20250192731
2025-06-12

AMPLIFIER DEVICE FOR AMPLIFYING SMALL CURRENTS

 #7
20250015770
2025-01-09

AUDIO AMPLIFIER CIRCUIT

 #8
20230253930
2023-08-10

POWER AMPLIFIER WITH CLAMP AND FEEDBACK PROTECTION CIRCUITRY

 #9
20220376660
2022-11-24

ELECTRICAL CIRCUIT

 #10
20220060160
2022-02-24

Radiofrequency power amplifier

 #11
20220021351
2022-01-20

APPARATUS AND METHODS FOR OVERLOAD PROTECTION OF RADIO FREQUENCY AMPLIFIERS

 #12
20210399728
2021-12-23

Output driver with reverse current blocking capabilities

 #13
20210234516
2021-07-29

Integrated circuits containing vertically-integrated capacitor-avalanche diode structures

 #14
20210126591
2021-04-29

Semiconductor device and power amplifier module

 #15
20210075380
2021-03-11

High power amplifier circuit with protective feedback circuit

 #16
20200382085
2020-12-03

Amplifier circuit

 #17
20200373890
2020-11-26

Amplification circuit, radio-frequency front end circuit, and communication device

 #18
20200350868
2020-11-05

Amplifier circuit with overshoot suppression

 #19
20200336106
2020-10-22

Power amplifier module

 #20
20200335491
2020-10-22

Semiconductor device

 #21
20200259467
2020-08-13

Apparatus and methods for overload protection of radio frequency amplifiers

 #22
20200235062
2020-07-23

Semiconductor device

 #23
20200195201
2020-06-18

Linearity enhancement of high power amplifiers

 #24
20200177140
2020-06-04

Semiconductor device and power amplifier module

 #25
20200162031
2020-05-21

Amplification device

 #26
20200127614
2020-04-23

PEAK VOLTAGE LIMITING CIRCUITS AND METHODS FOR POWER AMPLIFIERS

 #27
20190296699
2019-09-26

Semiconductor device and power amplifier module

 #28
20190280687
2019-09-12

Gate voltage control circuit of insulated gate bipolar transistor and control method thereof

 #29
20190267953
2019-08-29

INTEGRATED RF LIMITER

 #30
20190229681
2019-07-25

Power amplifier module

 #31
20190199293
2019-06-27

Power amplifying apparatus with wideband linearity

 #32
20190149100
2019-05-16

Amplifier circuit with overshoot suppression

 #33
20190115338
2019-04-18

Semiconductor device

 #34
20190020317
2019-01-17

Current-limiting circuit for a power amplifier

 #35
20180342988
2018-11-29

Semiconductor device including an ESD protective element

 #36
20180342987
2018-11-29

Integrated circuit device

 #37
20180323752
2018-11-08

Apparatus and methods for overload protection of radio frequency amplifiers

 #38
20180309417
2018-10-25

Semiconductor device and power amplifier module

 #39
20180287565
2018-10-04

Power amplifier module

 #40
20180269866
2018-09-20

Gate voltage control circuit of insulated gate bipolar transistor and control method thereof

 #41
20180241349
2018-08-23

Power amplifier module

 #42
20180175810
2018-06-21

Input protection circuit for an analog optocoupler

 #43
20180152153
2018-05-31

Semiconductor integrated circuit, communication module, and smart meter

 #44
20180146301
2018-05-24

Circuit for providing a high and a low impedance and a system comprising the circuit

 #45
20180048266
2018-02-15

Amplifier circuit with overshoot suppression

 #46
20180019714
2018-01-18

Integrated RF limiter

 #47
20170317651
2017-11-02

System and method for close-down pop reduction

 #48
20170302232
2017-10-19

Class D amplifier

 #49
20170237403
2017-08-17

Multiplexed multi-stage low noise amplifier uses gallium arsenide and CMOS dice

 #50
20170160316
2017-06-08

Class D audio amplifier and method for reading a current supplied by the amplifier

 #51
20170104457
2017-04-13

Multiplexed multi-stage low noise amplifier uses gallium arsenide and CMOS dies

 #52
20170047894
2017-02-16

Power amplifier module

 #53
20170019075
2017-01-19

RF amplifier

 #54
20160373069
2016-12-22

Power amplifier module

 #55
20160322940
2016-11-03

Power amplifier and method for limiting current in power amplifier

 #56
20160294335
2016-10-06

Radiofrequency power limiter, and associated radiofrequency emitter and/or receiver chain and low-noise amplifying stage

 #57
20160268985
2016-09-15

Transceiver circuit for communicating differential and single-ended signals via transmission lines

 #58
20160268978
2016-09-15

Semiconductor integrated circuit, communication module, and smart meter

 #59
20160254789
2016-09-01

Electrostatic discharge protection for CMOS amplifier

 #60
20160197586
2016-07-07

Peak detecting cascode for breakdown protection

 #61
20160173045
2016-06-16

Current sense amplifer with extended common mode input voltage range

 #62
20160173037
2016-06-16

Trimming method for current sense amplifiers

 #63
20160149542
2016-05-26

Preamplifier for a microphone

 #64
20160099688
2016-04-07

Peak voltage limiting circuits and methods for power amplifiers

 #65
20160079944
2016-03-17

Precision, high voltage, low power differential input stage with static and dynamic gate protection

 #66
20160013759
2016-01-14

AMPLIFIER CIRCUITRY FOR ENVELOPE MODULATORS, ENVELOPE MODULATORS INCORPORATING SAID AMPLIFIER CIRCUITRY AND METHOD OF MODULATING A SIGNAL ENVELOPE

 #67
20150340993
2015-11-26

Circuitry

 #68
20150295544
2015-10-15

Amplifier circuit with overshoot suppression

 #69
20150070803
2015-03-12

Electro-static discharge protection for integrated circuits

 #70
20150035607
2015-02-05

Power amplifier module

 #71
20140368280
2014-12-18

Protection module for RF-amplifier

 #72
20140368271
2014-12-18

AMPLIFIER CIRCUIT WITH OVERSHOOT SUPPRESSION

 #73
20140232472
2014-08-21

Method and Device for Protecting a High-Frequency Power Amplifier Against a Termination fault

 #74
20140062600
2014-03-06

Temperature compensation circuit and electronic device with temperature compensation

 #75
20140029143
2014-01-30

Receiver having a wide common mode input range

 #76
20130293297
2013-11-07

Amplification circuit comprising input signal limiting network

 #77
20130127544
2013-05-23

Amplifier circuit

 #78
20130120059
2013-05-16

Amplifier circuit and light receiving circuit

 #79
20130026577
2013-01-31

Gate protection diode for high-frequency power amplifier

 #80
20120329418
2012-12-27

Low noise amplifier protection using a clamping device

 #81
20120313709
2012-12-13

Method and system for providing automatic gate bias and bias sequencing for field effect transistors

 #82
20120220089
2012-08-30

Compound semiconductor device and method for manufacturing the same

 #83
20120176709
2012-07-12

ESD protection devices and methods for forming ESD protection devices

 #84
20120170773
2012-07-05

AMPLIFIER WITH HIGH-FREQUENCY NOISE REMOVING FUNCTION, MICROPHONE MODULE, AND SENSOR MODULE

 #85
20120146729
2012-06-14

Amplifier device

 #86
20120119834
2012-05-17

Amplifier circuit with overshoot suppression

 #87
20120091504
2012-04-19

Method of forming an ESD protection device and structure therefor

 #88
20120062324
2012-03-15

RF power amplifier

 #89
20120039487
2012-02-16

First stage audio amplifier with clamping circuit

 #90
20120019968
2012-01-26

Transmission-line-based ESD protection

 #91
20120014541
2012-01-19

AMPLIFYING DEVICE FOR CONDENSER MICROPHONE

 #92
20110181324
2011-07-28

Self-adjusting gate bias network for field effect transistors

 #93
20110169094
2011-07-14

Gate protection diode for high-frequency power amplifier

 #94
20110102081
2011-05-05

Amplifier circuit with overshoot suppression

 #95
20100327980
2010-12-30

Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the same

 #96
20100309594
2010-12-09

INTEGRATED CIRCUIT DEVICE

 #97
20100277840
2010-11-04

V-band radio frequency electrostatic discharge protection circuit

 #98
20100246078
2010-09-30

SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

 #99
20100225388
2010-09-09

Power amplifier

 #100
20100219686
2010-09-02

Protective device against abnormality for positive and negative dual power supply circuit

 #101
20100127782
2010-05-27

Common centroid electrostatic discharge protection for integrated circuit devices

 #102
20100109785
2010-05-06

Amplifier circuit having first amplifying section and second amplifying section

 #103
20100103572
2010-04-29

Amplifier with improved ESD protection circuitry

 #104
20100026392
2010-02-04

Method and apparatus for output amplifier protection

 #105
20090161275
2009-06-25

INTEGRATED CONTROLLING CHIP

 #106
20090159974
2009-06-25

Gate protection diode for high-frequency power amplifier

 #107
20090072801
2009-03-19

Voltage generating circuit

 #108
20090052103
2009-02-26

Circuit arrangement for the protection of electronic components or assemblies

 #109
20090051393
2009-02-26

Low side driver

 #110
20090039963
2009-02-12

Circuit for inhibiting over-current in power amplifier

 #111
20090027129
2009-01-29

High power RF solid state power amplifier system

 #112
20080285188
2008-11-20

Composite integrated semiconductor device

 #113
20080068081
2008-03-20

High-voltage operational amplifier input stage and method

 #114
20080014878
2008-01-17

Radio frequency integrated circuit electro-static discharge circuit

 #115
20080001673
2008-01-03

Semiconductor device

 #116
20070298712
2007-12-27

Transmit/receive circuit with PIN diodes

 #117
20070285855
2007-12-13

Composite integrated semiconductor device

 #118
20070285169
2007-12-13

Transmitter and control method for same

 #119
20070188191
2007-08-16

Differential amplifier with over-voltage protection and method

 #120
20070164316
2007-07-19

Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the same

 #121
20070159246
2007-07-12

Power amplifier

 #122
20070146955
2007-06-28

Semiconductor integrated circuit device

 #123
20070070564
2007-03-29

ESD protection circuits for RF input pins

 #124
20070070563
2007-03-29

Voltage overload protection circuits

 #125
20070070562
2007-03-29

ESD unit protection cell for distributed amplifiers

 #126
20070045519
2007-03-01

Photocurrent amplifier circuit and optical pick-up device

 #127
20070037532
2007-02-15

Radio frequency excitation arrangement including a limiting circuit

 #128
20060268479
2006-11-30

ESD protection structure

 #129
20060256489
2006-11-16

ESD protection circuits with impedance matching for radio-frequency applications

 #130
20060197577
2006-09-07

Lossy linearizers for analog optical transmitters

 #131
20060071735
2006-04-06

Input impedance matching circuit for low noise amplifier

 #132
20060040621
2006-02-23

Radio frequency integrated circuit electo-static discharge circuit

 #133
20050156194
2005-07-21

Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the same

 #134
20050122168
2005-06-09

Overcurrent protection in amplifier topologies employing DC isolation