ClassID:

219644

H03F2200/441 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers Protection of an amplifier being implemented by clamping means

Recent Application in this class:
#1
20260066858
2026-03-05

APPARATUS AND METHODS FOR DETECTING AND CLAMPING POWER OF A POWER AMPLIFIER

#2
20250350248
2025-11-13

POWER AMPLIFIER WITH CLAMP AND FEEDBACK PROTECTION CIRCUITRY

#3
20250300606
2025-09-25

Diode-Based Protection Circuit

#4
20250158578
2025-05-15

APPARATUS AND METHODS FOR AMPLIFIER INPUT-OVERVOLTAGE PROTECTION WITH LOW LEAKAGE CURRENT

#5
20250125776
2025-04-17

PROTECTION CIRCUITS AND RELATED METHODS AND DEVICES FOR RADIO-FREQUENCY APPLICATIONS

#6
20250015770
2025-01-09

AUDIO AMPLIFIER CIRCUIT

#7
20250007476
2025-01-02

AUDIO AMPLIFIER CIRCUIT

#8
20250007473
2025-01-02

SEMICONDUCTOR DEVICE

#9
20240283408
2024-08-22

AMPLIFICATION CIRCUIT, POWER AMPLIFICATION CIRCUIT, AND BIAS GENERATION CIRCUIT

#10
20240204734
2024-06-20

REDUCTION OF ARTEFACTS IN MULTI-CHANNEL SYSTEMS

#11
20240162864
2024-05-16

PROTECTION CIRCUIT FOR POWER AMPLIFIERS

#12
20240146256
2024-05-02

TRANS-IMPEDANCE AMPLIFIER AND TRANS-IMPEDANCE AMPLIFIER CONTROL METHOD

#13
20230327609
2023-10-12

AMPLIFIER CIRCUIT WITH PROTECTION CIRCUIT

#14
20230318538
2023-10-05

POWER AMPLIFIER CIRCUIT

#15
20230268892
2023-08-24

Class D amplifier driving circuit

#16
20230253930
2023-08-10

POWER AMPLIFIER WITH CLAMP AND FEEDBACK PROTECTION CIRCUITRY

#17
20230253346
2023-08-10

Switch with electrostatic discharge (ESD) protection

#18
20230176110
2023-06-08

Output voltage glitch reduction in test systems

#19
20230152828
2023-05-18

VOLTAGE REGULATOR WITH SATURATION PREVENTION

#20
20230114208
2023-04-13

Output voltage glitch reduction in ate systems

#21
20230091219
2023-03-23

AMPLIFIER WITH OVERVOLTAGE PROTECTION

#22
20230079623
2023-03-16

APPARATUS AND METHODS FOR DETECTING AND CLAMPING POWER OF A POWER AMPLIFIER

#23
20230034531
2023-02-02

POWER AMPLIFIER WITH OVERVOLTAGE PROTECTION IN INPUT MATCHING STAGE

#24
20220200542
2022-06-23

Power amplifier

#25
20220189886
2022-06-16

Switch with electrostatic discharge (ESD) protection

#26
20220182023
2022-06-09

Power amplifier with a power transistor and an electrostatic discharge protection circuit on separate substrates

#27
20220166395
2022-05-26

Integrated circuit with an input multiplexer system

#28
20220140792
2022-05-05

Amplifier having electrostatic discharge and surge protection circuit

#29
20210384870
2021-12-09

Apparatus and methods for amplifier input-overvoltage protection with low leakage current

#30
20210111682
2021-04-15

Signal output circuit

#31
20200321923
2020-10-08

Concurrent electrostatic discharge and surge protection clamps in power amplifiers

#32
20200227912
2020-07-16

Variable level power clamping circuit

#33
20200162031
2020-05-21

Amplification device

#34
20200091953
2020-03-19

Inrush current limiter circuits having current regulating switches therein

#35
20200036351
2020-01-30

Signal level detection and overrange signal limiter and clamp for electronic circuits

#36
20190280687
2019-09-12

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

#37
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

#38
20180269866
2018-09-20

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

#39
20180145639
2018-05-24

Amplifier for contorlling output range and multi-stage amplification device using the same

#40
20170317651
2017-11-02

System and method for close-down pop reduction

#41
20170302232
2017-10-19

Class D amplifier

#42
20170251294
2017-08-31

Clamping audio signal paths

#43
20170141748
2017-05-18

Amplifier system, controller of main amplifier and associated control method

#44
20170019075
2017-01-19

RF amplifier

#45
20160254789
2016-09-01

Electrostatic discharge protection for CMOS amplifier

#46
20150381125
2015-12-31

Power amplifier

#47
20150311872
2015-10-29

Apparatus and methods for amplifier input protection

#48
20150207468
2015-07-23

Amplifier circuit

#49
20150070803
2015-03-12

Electro-static discharge protection for integrated circuits

#50
20150038092
2015-02-05

Power amplifier open loop current clamp

#51
20140104003
2014-04-17

Operational amplifier circuit and method implementing the same

#52
20120326791
2012-12-27

Voltage controlling circuit

#53
20120281325
2012-11-08

Limiting circuit

#54
20120176709
2012-07-12

ESD protection devices and methods for forming ESD protection devices

#55
20120019968
2012-01-26

Transmission-line-based ESD protection

#56
20110316630
2011-12-29

Push-pull linear hybrid class H amplifier

#57
20110267725
2011-11-03

Protection apparatus against electrostatic discharges for an integrated circuit and related integrated circuit

#58
20110181336
2011-07-28

Output buffer circuit and method for avoiding voltage overshoot

#59
20110128076
2011-06-02

Managing power supply transients

#60
20100309594
2010-12-09

INTEGRATED CIRCUIT DEVICE

#61
20100289580
2010-11-18

Operational trans-conductance amplifier with output clamp circuit

#62
20100176849
2010-07-15

Closed loop surge protection technique for differential amplifiers

#63
20100171552
2010-07-08

Push-pull linear hybrid class H amplifier

#64
20100149703
2010-06-17

ESD clamp circuit applied to power amplifier

#65
20100103572
2010-04-29

Amplifier with improved ESD protection circuitry

#66
20100073064
2010-03-25

Voltage clamp

#67
20090278602
2009-11-12

Closed loop surge protection technique for differential amplifiers

#68
20090196310
2009-08-06

Device and method for improved settling time in multiplexed input systems

#69
20080186102
2008-08-07

Front end for an instrumentation amplifier

#70
20080030914
2008-02-07

Microelectronic device equipped with a thermal protection circuit and thermal protection method for a microelectronic device

#71
20080024186
2008-01-31

Amplifier circuit, semiconductor device and electronic apparatus

#72
20080014878
2008-01-17

Radio frequency integrated circuit electro-static discharge circuit

#73
20070206395
2007-09-06

Class E amplifier with inductive clamp

#74
20070146955
2007-06-28

Semiconductor integrated circuit device

#75
20070013443
2007-01-18

Compartmental gain limiter and controlling method thereof

#76
20060256489
2006-11-16

ESD protection circuits with impedance matching for radio-frequency applications

#77
20060158911
2006-07-20

Class E amplifier with inductive clamp

#78
20060040621
2006-02-23

Radio frequency integrated circuit electo-static discharge circuit

#79
20060017504
2006-01-26

Clamping circuit for operational amplifiers

#80
20050122168
2005-06-09

Overcurrent protection in amplifier topologies employing DC isolation