H03F2203/45264 - CPC Classification Index

ClassID:

219937 ⎘

H03F2203/45264 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by; Indexing scheme relating to differential amplifiers the dif amp comprising frequency or phase stabilisation means

Recent Application in this class:

20210320635

2021-10-14

Apparatus for pole frequency tracking in amplifiers and associated methods

20190149133

2019-05-16

Tunable filter

20190028075

2019-01-24

Semiconductor integrated circuit

20180337644

2018-11-22

Amplifier error current based on multiple integrators

20180069510

2018-03-08

Frequency selective low noise amplifier circuit

20170346456

2017-11-30

Active RC filters

20170311077

2017-10-26

Audio signal correction and calibration for a room environment

20170163230

2017-06-08

Nonlinear class AB input stage

20160373077

2016-12-22

Operational amplifier circuit

#10

20160316295

2016-10-27

Audio signal correction and calibration for a room environment

#11

20160226457

2016-08-04

Implementing enhanced bias configuration for CMOS inverter based optical Transimpedance Amplifier

#12

20160173041

2016-06-16

Hot-swap current-sensing system

#13

20160142016

2016-05-19

Operational amplifier based circuit with compensation circuit block used for stability compensation

#14

20150381113

2015-12-31

Phase-dependent operational amplifiers employing phase-based frequency compensation, and related systems and methods

#15

20150280663

2015-10-01

Semiconductor circuit and amplifier circuit

#16

20150229280

2015-08-13

Nonlinear class AB input stage

#17

20140266447

2014-09-18

Voltage regulators, amplifiers, memory devices and methods

#18

20140161281

2014-06-12

Audio signal correction and calibration for a room environment

#19

20130106512

2013-05-02

Folded cascode operational amplifier

#20

20120299655

2012-11-29

Voltage regulators, amplifiers, memory devices and methods

#21

20110235455

2011-09-29

Voltage regulators, amplifiers, memory devices and methods

#22

20110067083

2011-03-17

Fully integrated tuner architecture

#23

20100327887

2010-12-30

Chopper-stabilized instrumentation amplifier for impedance measurement

#24

20100237884

2010-09-23

Integrated switchless programmable attenuator and low noise amplifier

#25

20100033240

2010-02-11

Chopper-stabilized instrumentation amplifier for impedance measurement

#26

20080297249

2008-12-04

CMOS amplifiers with frequency compensating capacitors

#27

20080284919

2008-11-20

Fully integrated tuner architecture

#28

20080183098

2008-07-31

Chopper-stabilized instrumentation amplifier for impedance measurement

#29

20080048728

2008-02-28

STABLE SENSE AMPLIFIER

#30

20070139115

2007-06-21

CMOS amplifiers with frequency compensating capacitors

#31

20070120605

2007-05-31

Integrated switchless programmable attenuator and low noise amplifier

#32

20070077908

2007-04-05

Fully integrated tuner architecture

#33

20070013433

2007-01-18

Temperature compensation for internal inductor resistance

#34

20060291312

2006-12-28

CMOS amplifiers with frequency compensating capacitors

#35

20060261896

2006-11-23

CMOS amplifiers with frequency compensating capacitors

#36

20060261860

2006-11-23

DC to DC converter and voltage detecting circuit and current detecting circuit thereof

#37

20060214726

2006-09-28

Q value correction of filter circuit

#38

20060176108

2006-08-10

Frequency stabilization of chopper-stabilized amplifiers

#39

20060176107

2006-08-10

Amplifier, voltage stabilizing unit and method thereof

#40

20060176105

2006-08-10

Amplifier, voltage stabilizing unit and method thereof

#41

20060091955

2006-05-04

Circuits and methods for improving slew rate of differential amplifiers

#42

20060066390

2006-03-30

Analog circuit for calculating square and reciprocal of a current

#43

20060055456

2006-03-16

Phase corrected miller compensation of chopper and nested chopper amplifiers

#44

20060044066

2006-03-02

CMOS amplifiers with frequency compensating capacitors

#45

20050206444

2005-09-22

Methods and systems for decoupling the stabilization of two loops

#46

20050153677

2005-07-14

System and method for on-chip filter tuning

#47

20050116779

2005-06-02

Method to reduce unwanted oscillations in high speed, high gain or transimpedance amplifiers

#48

20050107055

2005-05-19

Integrated switchless programmable attenuator and low noise amplifier

#49

20050059373

2005-03-17

Frequency generator and communication system using the same