ClassID:

220001

H03F2203/45392 - 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 AAC comprising resistors in the source circuit of the AAC before the common source coupling

Recent Application in this class:
#1
20230275550
2023-08-31

Biased amplifier

#2
20210288624
2021-09-16

Biased amplifier

#3
20200389140
2020-12-10

CMOS input stage circuits and related methods

#4
20200204129
2020-06-25

Biased amplifier

#5
20190115885
2019-04-18

Biased amplifier

#6
20190115876
2019-04-18

Power amplifier with nulling monitor circuit

#7
20190097587
2019-03-28

Voltage-to-current converters

#8
20190052236
2019-02-14

Variable gain circuit and transimpedance amplifier using the same

#9
20180323762
2018-11-08

Dynamic correction of gain error in current-feedback instrumentation amplifiers

#10
20180294811
2018-10-11

Operational amplifier, driving interface, measurement and control device, driving circuit and driver

#11
20180287575
2018-10-04

Driver circuit

#12
20180212573
2018-07-26

Bias modulation active linearization for broadband amplifiers

#13
20180198431
2018-07-12

Variable gain amplifier

#14
20180083575
2018-03-22

Amplifier with improved linearity

#15
20170264252
2017-09-14

Active linearization for broadband amplifiers

#16
20170054417
2017-02-23

System and method for improving total harmonic distortion of an amplifier

#17
20160218688
2016-07-28

Preamplifier circuit for a microelectromechanical capacitive acoustic transducer

#18
20160087727
2016-03-24

Optical modulator driver circuit and optical transmitter

#19
20160070123
2016-03-10

Optical modulator driver

#20
20160043697
2016-02-11

Front-end matching amplifier

#21
20150381128
2015-12-31

Hybrid translinear amplifier

#22
20150071466
2015-03-12

Read-out for MEMS capacitive transducers

#23
20140037113
2014-02-06

Preamplifier circuit for a microelectromechanical capacitive acoustic transducer

#24
20130257537
2013-10-03

Matched feedback amplifier with improved linearity

#25
20130207720
2013-08-15

Operational amplifier with elimination of offset voltage

#26
20130113565
2013-05-09

Linear differential amplifier with high input impedance

#27
20130093494
2013-04-18

Differential current buffer

#28
20130076551
2013-03-28

Analog-to-digital converter including differential pair circuit

#29
20130057344
2013-03-07

DIFFERENTIAL RF AMPLIFIER

#30
20120262235
2012-10-18

Differential output stage

#31
20120249232
2012-10-04

Traveling wave amplifier with pre-emphasis function

#32
20120032831
2012-02-09

Adder-embedded dynamic preamplifier

#33
20110316507
2011-12-29

Multiple-input comparator and power converter

#34
20110193631
2011-08-11

Audio dropout amplifier

#35
20110163899
2011-07-07

Sample and hold circuit and method for controlling same

#36
20110156759
2011-06-30

SAMPLE AND HOLD CIRCUIT AND METHOD FOR CONTROLLING THE SAME

#37
20110143822
2011-06-16

Fully integrated compact cross-coupled low noise amplifier

#38
20110109390
2011-05-12

Transconductor circuit

#39
20110109388
2011-05-12

Differential RF amplifier

#40
20110095822
2011-04-28

Variable-gain low noise amplifier

#41
20100329487
2010-12-30

Preamplifier circuit for a microelectromechanical capacitive acoustic transducer

#42
20100291890
2010-11-18

Receiver

#43
20100289583
2010-11-18

Variable gain RF amplifier

#44
20100045386
2010-02-25

Amplifier circuit

#45
20090305655
2009-12-10

Receiver having a gain-controllable input amplifier

#46
20090261903
2009-10-22

VARIABLE GAIN RF AMPLIFIER

#47
20090256634
2009-10-15

Output distortion cancellation circuit

#48
20090251219
2009-10-08

Amplifier arrangement and signal generation method

#49
20090245541
2009-10-01

Audio Power Amplifier with Feedback-Shifting Technology

#50
20090237165
2009-09-24

Cross-coupled low noise amplifier for cellular applications

#51
20090219092
2009-09-03

Highly linear differential amplifier with a novel resistive source degeneration network

#52
20090218477
2009-09-03

Image sensing apparatus and image sensing system

#53
20090206806
2009-08-20

Voltage comparison circuit, and semiconductor integrated circuit and electronic device having the same

#54
20090184766
2009-07-23

Low-voltage wide-range linear transconductor cell

#55
20090153245
2009-06-18

Variable-gain wide-dynamic-range amplifier

#56
20090140809
2009-06-04

High performance variable gain amplifier, method of use and design structure

#57
20090115528
2009-05-07

Low cost high performance power amplifier utilizing two-stage-included local negative feedback with feedback-shifting technology

#58
20090104873
2009-04-23

FULLY INTEGRATED COMPACT CROSS-COUPLED LOW NOISE AMPLIFIER

#59
20090102562
2009-04-23

Cross-coupled low noise amplifier for cellular applications

#60
20090058529
2009-03-05

Resistively loaded single stage differential amplifier having zero volt common mode input

#61
20090058525
2009-03-05

Common-mode bandwidth reduction circuit and method for differential applications

#62
20090058522
2009-03-05

Differential amplifier

#63
20090027125
2009-01-29

Common mode rejection calibration method for difference amplifiers

#64
20080303577
2008-12-11

Arrangement for canceling offset of driver amplifier circuitry

#65
20080284514
2008-11-20

Differential amplifier with multiple signal gains and wide dynamic range

#66
20080238539
2008-10-02

Arrangement for canceling offset of an operational amplifier

#67
20080186096
2008-08-07

System and method for distortion cancellation in amplifiers

#68
20080143441
2008-06-19

AMPLIFIER HAVING PLURALITY OF DIFFERENTIAL PAIRS AND COMMUNICATION SYSTEM EQUIPPED WITH SAME

#69
20080062295
2008-03-13

Photoelectric conversion apparatus with fully differential amplifier

#70
20080061877
2008-03-13

Common mode regulation for thermal tail compensation

#71
20080061745
2008-03-13

Differential amplifier circuit and electric charge control apparatus using differential amplifier circuit

#72
20080048780
2008-02-28

Linearization apparatus of triode region type operational transconductance amplifier

#73
20080001664
2008-01-03

Compound automatic gain control

#74
20070279131
2007-12-06

Variable gain amplifier and differential amplifier

#75
20070229163
2007-10-04

Plop noise avoidance for an amplifier

#76
20070146070
2007-06-28

Differential cascode amplifier

#77
20070139110
2007-06-21

Differential input and output transconductance circuit

#78
20070090876
2007-04-26

Apparatus for variable gain amplifiers and mixers

#79
20060220736
2006-10-05

Low noise amplifier and differential amplifier with variable gain mode

#80
20060170497
2006-08-03

Gain variable amplifier

#81
20060164149
2006-07-27

Mixer stage and method for mixing two signals having different frequencies

#82
20060055463
2006-03-16

Linear transconductance cell with wide tuning range

#83
20060001486
2006-01-05

Bias circuit for high frequency amplifiers

#84
20050225390
2005-10-13

Amplifier having switchable negative feedback

#85
20050134390
2005-06-23

Bias circuit for high frequency amplifiers

#86
20050104659
2005-05-19

Darlington differential amplifier

#87
20050083126
2005-04-21

Method and circuit for a dual supply amplifier

#88
20050004482
2005-01-06

Amplified system for determining parameters of a patient