ClassID:

219981

H03F2203/45352 - 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 a combination of a plurality of transistors, e.g. Darlington coupled transistors

Recent Application in this class:
#1
20210320634
2021-10-14

Amplifiers suitable for mm-wave signal splitting and combining

#2
20210249996
2021-08-12

Stacked segmented power amplifier circuitry and a method for controlling a stacked segmented power amplifier circuitry

#3
20210090520
2021-03-25

Operational amplifier circuit and display apparatus with operational amplifier circuit for avoiding voltage overshoot

#4
20200412301
2020-12-31

Power efficient amplifier

#5
20200350679
2020-11-05

Phase shifter with bidirectional amplification

#6
20200321931
2020-10-08

Amplifiers suitable for mm-wave signal splitting and combining

#7
20200287509
2020-09-10

OPERATIONAL AMPLIFIER

#8
20190339730
2019-11-07

Power-cycling voltage reference

#9
20190260334
2019-08-22

Operational amplifier circuit capable of improving linearity relation between loading current and input voltage difference

#10
20190207572
2019-07-04

Down-conversion mixer

#11
20190204863
2019-07-04

Reference voltage generator

#12
20190006998
2019-01-03

Amplifier arrangement and switched capacitor integrator

#13
20180358940
2018-12-13

Amplifier

#14
20180337642
2018-11-22

Operational amplifier circuit capable of improving linearity relation between loading current and input voltage difference

#15
20180054168
2018-02-22

Frequency-compensated transconductance amplifier

#16
20180006619
2018-01-04

Radio frequency system switching power amplifier systems and methods

#17
20170310292
2017-10-26

Differential amplifier circuit and radar device

#18
20170264252
2017-09-14

Active linearization for broadband amplifiers

#19
20170005622
2017-01-05

Amplifier arrangement

#20
20160079944
2016-03-17

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

#21
20160072460
2016-03-10

Differential amplifier

#22
20150372652
2015-12-24

Multistage amplifier

#23
20150200635
2015-07-16

Operational transconductance amplifier, reconfigurable fully differential voltage sensing amplifier and reconfigurable fully differential capacitive sensing amplifier

#24
20150130538
2015-05-14

Differential amplifier circuit

#25
20150084688
2015-03-26

Baseband processing circuitry

#26
20140300414
2014-10-09

Operational amplifier circuit

#27
20140232462
2014-08-21

Power amplifier using differential structure

#28
20140225675
2014-08-14

Apparatus for a radio frequency integrated circuit

#29
20130307623
2013-11-21

Amplifier circuits with reduced power consumption

#30
20130300506
2013-11-14

Accurate bias tracking for process variation and supply modulation

#31
20130293303
2013-11-07

Dual carrier amplifier circuits and methods

#32
20130278337
2013-10-24

Differential signal correction circuit

#33
20130249632
2013-09-26

Enhanced transconductance circuit

#34
20130241653
2013-09-19

Instrumentation input systems

#35
20130136213
2013-05-30

Reception signal processing device

#36
20130135042
2013-05-30

Broadband linearization by elimination of harmonics and intermodulation in amplifiers

#37
20130134988
2013-05-30

Method and system for high gain auto-zeroing arrangement for electronic circuits

#38
20130113569
2013-05-09

Cross-coupled multipath feedforward operational amplifiers

#39
20130113564
2013-05-09

Fast settling low power low noise amplifier

#40
20130106512
2013-05-02

Folded cascode operational amplifier

#41
20130069720
2013-03-21

Apparatus and methods for electronic amplification

#42
20130049845
2013-02-28

Differential integrated input circuit

#43
20130043947
2013-02-21

Output circuit

#44
20130027137
2013-01-31

Radiation hardened differential amplifier

#45
20130027007
2013-01-31

Amplifier with multiple zero-pole pairs

#46
20130021097
2013-01-24

Inductive-element feedback-loop compensator

#47
20120307122
2012-12-06

Low common mode driver

#48
20120299632
2012-11-29

SIMULTANEOUS SIGNAL INPUT MATCHING AND LINEARIZATION

#49
20120286860
2012-11-15

Systems and methods for minimizing phase deviation and/or amplitude modulation (AM)-to-phase modulation (PM) conversion for dynamic range, radio frequency (RF) non-linear amplifiers

#50
20120262237
2012-10-18

Power amplifier device

#51
20120161876
2012-06-28

Accurate bias tracking for process variation and supply modulation

#52
20120161869
2012-06-28

Differential amplifier

#53
20120086513
2012-04-12

Instrumentation input systems

#54
20120049958
2012-03-01

Amplifier circuit

#55
20120043996
2012-02-23

Linear transconductor for RF communications

#56
20110279718
2011-11-17

Amplifier for reducing horizontal band noise and devices having the same

#57
20110236027
2011-09-29

Voltage generator, control circuit, vector sum phase shifter, and optical transceiver

#58
20110217945
2011-09-08

Dual carrier amplifier circuits and methods

#59
20110210792
2011-09-01

Power amplifier device

#60
20110205193
2011-08-25

Operational amplifier with decreased through current, and display panel driver and display device incorporating the same

#61
20110181353
2011-07-28

TWO-CHANNEL OPERATIONAL AMPLIFIER CIRCUIT

#62
20110175759
2011-07-21

OPERATIONAL AMPLIFIER AND PIPELINE AD CONVERTER

#63
20110109390
2011-05-12

Transconductor circuit

#64
20110084764
2011-04-14

Amplifier and signal filter

#65
20110050318
2011-03-03

High voltage differential pair and op amp in low voltage process

#66
20110032033
2011-02-10

Pre-distortion and memory compensation apparatus

#67
20100328542
2010-12-30

Low-noise amplifier suitable for use in a television receiver

#68
20100323655
2010-12-23

Common-gate common-source transconductance stage for RF downconversion mixer

#69
20100289579
2010-11-18

Switchable input pair operational amplifiers

#70
20100259331
2010-10-14

High-linearity low noise amplifier

#71
20100225394
2010-09-09

High bandwidth, rail-to-rail differential amplifier with input stage transconductance amplifier

#72
20100225393
2010-09-09

High bandwidth, rail-to-rail differential amplifier with intermediate stage current amplifier

#73
20100225392
2010-09-09

High bandwidth, rail-to-rail differential amplifier with output stage amplifier

#74
20100197244
2010-08-05

Direct coupled radio frequency (RF) transceiver front end

#75
20100188151
2010-07-29

Operational amplifier and pipeline AD converter

#76
20100182301
2010-07-22

Operational amplifier, semiconductor device, and display device

#77
20100148878
2010-06-17

Amplifier with dither

#78
20100148868
2010-06-17

Differential amplifier

#79
20100141302
2010-06-10

Signal converting circuit

#80
20100123705
2010-05-20

Operational amplifier and display panel driving device

#81
20100109780
2010-05-06

Flexible dynamic range amplifier

#82
20100033249
2010-02-11

DIFFERENTIAL AMPLIFIER

#83
20100007419
2010-01-14

Instrumentation input systems

#84
20090256636
2009-10-15

Amplifier arrangement and method for signal amplification

#85
20090237163
2009-09-24

Trimming technique for high voltage amplifiers using floating low voltage structures

#86
20090224805
2009-09-10

Electronic circuit with compensation of intrinsic offset of differential pairs

#87
20090207063
2009-08-20

Variable passive components with high resolution value selection and control

#88
20090195313
2009-08-06

Boosted tail-current circuit

#89
20090189693
2009-07-30

Operational amplifier

#90
20090160525
2009-06-25

Level shift circuit

#91
20090102560
2009-04-23

Slew-enhanced input stages and amplifiers

#92
20090091388
2009-04-09

Apparatus for slew rate enhancement of an operational amplifier

#93
20090091386
2009-04-09

Differential amplifier

#94
20090072908
2009-03-19

Gain control circuit and optical recording and reproducing device using thereof

#95
20090066415
2009-03-12

Operational amplifier having high slew rate and stability, and operating method thereof

#96
20090058522
2009-03-05

Differential amplifier

#97
20090051424
2009-02-26

Active circuits with load linearization

#98
20090045875
2009-02-19

Data amplifying circuit controllable with swing level according to operation mode and output driver including the same

#99
20090040796
2009-02-12

Bipolar transistor drivers

#100
20090027123
2009-01-29

Controlled transconductance differential stage

#101
20080309411
2008-12-18

Radio frequency signal amplifying device

#102
20080284514
2008-11-20

Differential amplifier with multiple signal gains and wide dynamic range

#103
20080274714
2008-11-06

AMPLIFIER, FILTER USING THE SAME, AND RADIO COMMUNICATION DEVICE

#104
20080272821
2008-11-06

Signal converting circuit

#105
20080261553
2008-10-23

RF input transconductor stage

#106
20080238545
2008-10-02

Linearized class AB biased differential input stage

#107
20080231363
2008-09-25

Temperature compensation of small signal gain of an amplifier stage

#108
20080231362
2008-09-25

Linear transconductor for RF communications

#109
20080224772
2008-09-18

Operational amplifier selecting one of inputs, and an amplifying apparatus using the OP amplifier the verification method

#110
20080186096
2008-08-07

System and method for distortion cancellation in amplifiers

#111
20080180294
2008-07-31

Variable passive components with high resolution value selection and control

#112
20080164945
2008-07-10

Simple operational amplifiers circuit and alternative circuit of latch circuit

#113
20080143441
2008-06-19

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

#114
20080143434
2008-06-19

Transconductor

#115
20080129378
2008-06-05

Detector for automatic gain control

#116
20080111638
2008-05-15

Delay stage, ring oscillator, PLL-circuit and method

#117
20080106335
2008-05-08

Differential circuit

#118
20080088373
2008-04-17

Differential amplifier using body-source cross coupling

#119
20080077347
2008-03-27

Offset compensation for rail-to-rail avereraging circuit

#120
20080074188
2008-03-27

Output differential stage

#121
20080068064
2008-03-20

Input buffer circuit

#122
20080064359
2008-03-13

Amplifier, filter using the same, and radio communication device

#123
20080061846
2008-03-13

Input circuit for receiving a variable voltage input signal and method

#124
20080061840
2008-03-13

Receiver circuit having compensated offset voltage

#125
20080048780
2008-02-28

Linearization apparatus of triode region type operational transconductance amplifier

#126
20080036537
2008-02-14

Wide-band low-noise CMOS amplifier

#127
20080024172
2008-01-31

Actively Compensated Buffering for High Speed Current Mode Logic Data Path

#128
20080018405
2008-01-24

Ultra wide band, differential input/output, high frequency amplifier in an integrated circuit

#129
20080018400
2008-01-24

Differential amplifier and method

#130
20080012641
2008-01-17

Operational amplifier

#131
20080008263
2008-01-10

Pre-distortion apparatus

#132
20070247227
2007-10-25

Circuit and method for driving bulk capacitance of amplifier input transistors

#133
20070229154
2007-10-04

Differential amplifier with active post-distortion linearization

#134
20070222514
2007-09-27

Differential difference amplifier

#135
20070222510
2007-09-27

System and method for operating a feedback network

#136
20070216481
2007-09-20

Low noise amplifiers for low-power impulse radio ultra-wideband receivers

#137
20070210870
2007-09-13

Transconductance stage providing gain control

#138
20070194813
2007-08-23

Variable passive components with high resolution value selection and control

#139
20070183530
2007-08-09

Transmission device and radio communication device

#140
20070170987
2007-07-26

Differential-to-single-ended converter and phase-locked loop circuit having the same

#141
20070146071
2007-06-28

Common-gate common-source transconductance stage for RF downconversion mixer

#142
20070146070
2007-06-28

Differential cascode amplifier

#143
20070146008
2007-06-28

Semiconductor circuit comprising vertical transistor

#144
20070139110
2007-06-21

Differential input and output transconductance circuit

#145
20070115057
2007-05-24

Variable gain device

#146
20070109173
2007-05-17

Resistor ladder interpolation for subranging ADC

#147
20070096818
2007-05-03

Variable-gain amplifier and related method

#148
20070082640
2007-04-12

Signal generation apparatus, frequency converting apparatus, and receiver

#149
20070075774
2007-04-05

Variable gain amplifier

#150
20070046374
2007-03-01

Linearity-improved differential amplification circuit

#151
20070030066
2007-02-08

Data amplifying circuit controllable with swing level according to operation mode and output driver including the same

#152
20070024359
2007-02-01

Amplifier, filter using the same, and radio communication device

#153
20060290428
2006-12-28

Variable gain amplifier with temperature compensation and gain linearity enhancement

#154
20060181349
2006-08-17

CMOS variable gain amplifier for controlling dB linear gain

#155
20060176107
2006-08-10

Amplifier, voltage stabilizing unit and method thereof

#156
20060176105
2006-08-10

Amplifier, voltage stabilizing unit and method thereof

#157
20060119436
2006-06-08

High linearity digital variable gain amplifier

#158
20060114065
2006-06-01

High linearity digital variable gain amplifier

#159
20060066383
2006-03-30

Log circuit and highly linear differential-amplifier circuit

#160
20060055463
2006-03-16

Linear transconductance cell with wide tuning range

#161
20060017499
2006-01-26

Subtractor circuit and power detector arrangement having that subtractor circuit

#162
20060001490
2006-01-05

Differential dual port current conveyor circuit

#163
20050195871
2005-09-08

Amplification circuit for driving a laser signal

#164
20050162299
2005-07-28

Resistor ladder interpolation for subranging ADC

#165
20050104661
2005-05-19

Differential amplifier

#166
20050104659
2005-05-19

Darlington differential amplifier

#167
20050024149
2005-02-03

Apparatus and method for converting a fully-differential class-AB input signal to a rail-to-rail single ended output signal

#168
20050017806
2005-01-27

Integrated circuit with an amplifier

#169
20050017761
2005-01-27

Multi-input differential circuit

#170
20050017190
2005-01-27

Biosensor circuit and sensor array consisting of a plurality of said biosensor circuits and biosensor array

#171
16427138
2020-03-03

Dual-rail transceiver with improved signal-to-noise ratio for differential high-speed links

#172
16234595
2020-05-19

Operational transconductance amplifier