H03F2200/474 - CPC Classification Index

#1

20260149414

2026-05-28

AMPLIFICATION DEVICE AND CURRENT MIRROR CIRCUIT THEREOF

#2

20260135521

2026-05-14

FAULT PROTECTION CIRCUITS AND METHODS

#3

20250211182

2025-06-26

AMPLIFIER PEAK DETECTION

#4

20250103080

2025-03-27

SEMICONDUCTOR DEVICE

#5

20250015770

2025-01-09

AUDIO AMPLIFIER CIRCUIT

#6

20240333227

2024-10-03

DOHERTY AMPLIFIER

#7

20240171129

2024-05-23

CLASS D AMPLIFIER CIRCUIT

#8

20240146266

2024-05-02

Current sense amplifier

#9

20230231521

2023-07-20

Current mode multi-input maximum signal detector

#10

20230095506

2023-03-30

AMPLIFIER CIRCUIT, DIFFERENTIAL AMPLIFIER CIRCUIT, RECEPTION CIRCUIT, AND SEMICONDUCTOR INTEGRATED CIRCUIT

#11

20220416737

2022-12-29

Amplifier peak detection

#12

20190372535

2019-12-05

Sensing circuit, corresponding amplifier, apparatus and method

#13

20190173433

2019-06-06

Power amplifier self-heating compensation circuit

#14

20180351514

2018-12-06

Dual-feedback amplifier limiter

#15

20180342993

2018-11-29

Sensing circuit, corresponding amplifier, apparatus and method

#16

20180262166

2018-09-13

Positive temperature coefficient bias compensation circuit

#17

20180262164

2018-09-13

Power amplifier self-heating compensation circuit

#18

20180234061

2018-08-16

Multi-mode power amplifier

#19

20180196457

2018-07-12

Regenerative current detection circuit, charge current detection circuit, and motor current detection system

#20

20170153278

2017-06-01

Precise current measurement with chopping technique for high power driver

#21

20170093350

2017-03-30

Multi-stage amplifier with improved operating efficiency

#22

20160294336

2016-10-06

Balanced differential transimpedance amplifier with single ended input and balancing method

#23

20160211814

2016-07-21

Pulse detection amplifier

#24

20160181989

2016-06-23

Multi-mode power amplifier

#25

20160147247

2016-05-26

Low voltage, highly accurate current mirror

#26

20160094191

2016-03-31

Optical receiver to enhance dynamic range thereof

#27

20160054748

2016-02-25

Constant output amplifier

#28

20150332741

2015-11-19

Sense amplifier circuit and semiconductor memory device

#29

20150277470

2015-10-01

Current mirror circuit and receiver using the same

#30

20150260771

2015-09-17

Circuit and method for sensing a capacitance

#31

20130285744

2013-10-31

Overcurrent protection for class D power amplifier

#32

20130158921

2013-06-20

LOAD IMPEDANCE DETECTION

#33

20120146726

2012-06-14

Circuit and method for sensing a capacitance

#34

20110156819

2011-06-30

Low-noise high efficiency bias generation circuits and method

#35

20100308903

2010-12-09

Filtering arrangement, filtering method and current sensing arrangement

#36

20100097147

2010-04-22

Gate bias circuit

#37

20090264145

2009-10-22

DYNAMIC BIAS FOR RF POWER AMPLIFIERS

#38

20090170454

2009-07-02

Current limiting circuit for RF power amplifier

#39

20090108940

2009-04-30

Amplifier

#40

20080218261

2008-09-11

RF power amplifier mirror circuit for sensing current

#41

20080101802

2008-05-01

Receiving apparatus and electronic device using the same

#42

20080074152

2008-03-27

Sense amplifier circuit for low voltage applications

#43

20080001670

2008-01-03

Circuit for accurately controlling power amplifier output power

#44

20070182488

2007-08-09

Differential amplifying system

#45

20070115741

2007-05-24

Current sensing circuit and boost converter having the same

#46

20070057729

2007-03-15

Power amplifier and wireless communication device

#47

20060181351

2006-08-17

Power control circuit for accurate control of power amplifier output power

#48

20060166630

2006-07-27

Dynamic bias for RF power amplifiers

#49

20050122164

2005-06-09

Single chip power amplifier and envelope modulator

#50

15817091

2018-09-25

Load current sensing circuit for class-D amplifier