ClassID:

220260

H03G3/3084 - CPC Classification

Classification description:

Gain control in amplifiers or frequency changers without distortion of the input signal; Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves

Recent Application in this class:
#1
20260081574
2026-03-19

PROGRAMMABLE TRANSIMPEDANCE AMPLIFIER

#2
20250373339
2025-12-04

RECEIVER MONITORING IN LINEAR RECEIVER OPTICS

#3
20250155285
2025-05-15

Photoelectric Conversion Device

#4
20240328853
2024-10-03

ACTIVE CLAMP PHOTOELECTRIC SENSING DEVICE

#5
20240313733
2024-09-19

PHOTOIONIZATION DETECTOR SENSOR WITH ADJUSTABLE GAIN

#6
20240283419
2024-08-22

TRANSIMPEDANCE GAIN CONTROL

#7
20240283412
2024-08-22

SIGNAL PROCESSING

#8
20240195375
2024-06-13

METHOD FOR TIA TRANSIMPEDANCE CONTROL

#9
20230305120
2023-09-28

Frequency domain automatic gain control for a frequency modulated continuous wave (FMCW) light detection and ranging (LIDAR) system

#10
20230246603
2023-08-03

Transimpedance amplifiers

#11
20230163740
2023-05-25

Common mode correction using ADC in analog probe based receiver

#12
20230163729
2023-05-25

Method and system for process and temperature compensation in a transimpedance amplifier using a dual replica

#13
20230092750
2023-03-23

Reception circuit for optical communication

#14
20230046863
2023-02-16

Method and apparatus for bias control with a large dynamic range for Mach-Zehnder modulators

#15
20230032919
2023-02-02

Techniques for time domain automatic gain control for a frequency modulated continuous wave (FMCW) light detection and ranging (LIDAR) system

#16
20230011155
2023-01-12

TECHNIQUES FOR AUTOMATIC GAIN CONTROL IN A FREQUENCY DOMAIN FOR A SIGNAL PATH FOR A FREQUENCY MODULATED CONTINUOUS WAVE (FMCW) LIGHT DETECTION AND RANGING (LIDAR) SYSTEM

#17
20220182031
2022-06-09

Single servo loop controlling an automatic gain control and current sourcing mechanism

#18
20210159866
2021-05-27

Switched capacitor amplifier circuit, voltage amplification method, and infrared sensor device

#19
20210126602
2021-04-29

Optical receiver and transimpedance amplifier circuit

#20
20210126594
2021-04-29

Differential transimpedance amplifier

#21
20210091740
2021-03-25

Automatic gain control method and circuit for use in burst-mode transimpedance amplifier

#22
20210028748
2021-01-28

Method and system for process and temperature compensation in a transimpedance amplifier using a dual replica

#23
20200235820
2020-07-23

Optical receivers with DC cancellation bias circuit and embedded offset cancellation

#24
20200235713
2020-07-23

Coherent optical modem with method to discover and control an amplifier's automatic gain control (AGC) loop bandwidth

#25
20200235705
2020-07-23

Reconfigurable optical receivers for extended maximum input signals

#26
20200204134
2020-06-25

Automatic gain control loop

#27
20200153404
2020-05-14

Automatic gain control for passive optical network

#28
20200092010
2020-03-19

Optical receivers with DC cancellation bias circuit and embedded offset cancellation

#29
20200083855
2020-03-12

Reconfigurable optical receivers with extended dynamic range

#30
20200083846
2020-03-12

Reconfigurable optical receivers for extended maximum input signals

#31
20200028596
2020-01-23

High-bandwidth underwater data communication system

#32
20200014354
2020-01-09

Method to discover and control an amplifier's automatic gain control (AGC) loop bandwidth

#33
20200014353
2020-01-09

Automatic gain control circuit with background calibration

#34
20200007087
2020-01-02

Transimpedance amplifier

#35
20190372672
2019-12-05

Optical power and gain detection apparatus and method for optical amplifier in burst mode

#36
20190356292
2019-11-21

Variable step size to reduce convergence time of a control loop

#37
20190348960
2019-11-14

Automatic gain control loop

#38
20190334484
2019-10-31

Trans-impedance amplifier

#39
20190334482
2019-10-31

Wide dynamic range auto-AGC transimpedance amplifier

#40
20190324298
2019-10-24

Method and apparatus for bias control with a large dynamic range for Mach-Zehnder modulators

#41
20190305731
2019-10-03

Method and system for process and temperature compensation in a transimpedance amplifier using a dual replica

#42
20190296706
2019-09-26

Automatic gain control loop

#43
20190280781
2019-09-12

Method and system for a distributed optoelectronic receiver

#44
20190190466
2019-06-20

Wideband transimpedance amplifier circuit

#45
20190165861
2019-05-30

Method and apparatus for automatic signal gain setting

#46
20190154568
2019-05-23

Spectrometer, method of controlling output gain of spectrometer, and apparatus and method for measuring bio-information

#47
20190109572
2019-04-11

Method and system for accurate gain adjustment of a transimpedance amplifier using a dual replica and servo loop

#48
20190075262
2019-03-07

High dynamic range CTIA pixel

#49
20190052236
2019-02-14

Variable gain circuit and transimpedance amplifier using the same

#50
20190036489
2019-01-31

Trans-impedance amplifier

#51
20190020323
2019-01-17

Voltage-to-current transconductance operational amplifier with adaptive biasing

#52
20180306569
2018-10-25

Intensity Noise Reduction Methods and Apparatus for Interferometric Sensing and Imaging Systems

#53
20180269844
2018-09-20

Closed-loop automatic gain control in linear burst-mode transimpedance amplifier

#54
20180262275
2018-09-13

Method and system for a distributed optoelectronic receiver

#55
20180209845
2018-07-26

Spectrometer and spectrum measurement method thereof

#56
20180115290
2018-04-26

Passive bias temperature compensation circuit module

#57
20180091231
2018-03-29

Transimpedance amplifier for high-speed optical communications based on linear modulation

#58
20180088237
2018-03-29

Implementing enhanced CMOS inverter based optical transimpedance amplifier

#59
20180060640
2018-03-01

Finger biometric sensing device including series coupled error compensation and drive signal nulling circuitry and related methods

#60
20180054331
2018-02-22

Frequency characteristic adjusting circuit, optical transmitter, and optical transceiver

#61
20180041179
2018-02-08

Automatic gain control for received signal strength indication

#62
20180034558
2018-02-01

High-bandwidth underwater data communication system

#63
20180034432
2018-02-01

Multi-data rate, burst-mode transimpedance amplifier (TIA) circuit

#64
20180033815
2018-02-01

Wide dynamic range photo sensor

#65
20180033814
2018-02-01

Photo Sensor

#66
20180026597
2018-01-25

Method and system for accurate gain adjustment of a transimpedance amplifier using a dual replica and servo loop

#67
20170373651
2017-12-28

TRANS-IMPEDANCE AMPLIFIER ARRANGEMENT AND CONTROL MODULE

#68
20170338780
2017-11-23

Systems and methods to control transimpedance amplifier

#69
20170272036
2017-09-21

Front-end amplifier circuits for biomedical electronics

#70
20170179912
2017-06-22

Gain calibration for an imaging system

#71
20170142671
2017-05-18

Systems and methods for blocker margin sizing by an automatic gain control

#72
20170141853
2017-05-18

Method and system for a distributed optoelectronic receiver

#73
20170126191
2017-05-04

Linearizing and reducing peaking simultaneously in single-to-differential wideband radio frequency variable gain trans-impedance amplifier (TIA) for optical communication

#74
20170126190
2017-05-04

Simultaneous bandwidth extension at high gain and peaking reduction at minimum gain for wideband, variable gain, linear optical receivers

#75
20170126182
2017-05-04

Implementing enhanced CMOS inverter based optical transimpedance amplifier

#76
20170117863
2017-04-27

Variable gain amplifier and driver implementing the same

#77
20170054424
2017-02-23

Amplification circuit

#78
20170005633
2017-01-05

Trans-impedance amplifier with replica gain control

#79
20160373126
2016-12-22

Method for stabilizing gain of APD in medical laser receiver

#80
20160352436
2016-12-01

High-bandwidth underwater data communication system

#81
20160344359
2016-11-24

Method for stabilizing the gain of a discrete-state automatic gain control circuit

#82
20160285427
2016-09-29

Differential amplifier

#83
20160269091
2016-09-15

Wireless communication device, control method of wireless communication device and phase shifter

#84
20160261246
2016-09-08

Transimpedance amplifier circuit

#85
20160233956
2016-08-11

OPTICAL FIBER LINK MONITORING APPARATUS AND METHOD CAPABLE OF TRACE-BASED AUTOMATIC GAIN CONTROL

#86
20160211923
2016-07-21

High-bandwidth underwater data communication system

#87
20160211818
2016-07-21

Method and system for accurate gain adjustment of a transimpedance amplifier using a dual replica and servo loop

#88
20160211807
2016-07-21

Process and temperature compensation in TIA using dual replica and servo loop

#89
20160204753
2016-07-14

Amplification circuit

#90
20160202117
2016-07-14

Electromagnetic power measurement and reporting

#91
20160171274
2016-06-16

Finger biometric sensing device including drive signal nulling circuitry and related methods

#92
20160149548
2016-05-26

Trans-impedance amplifier with replica gain control

#93
20160118970
2016-04-28

Peak detector using charge pump and burst-mode transimpedance amplifier

#94
20160087727
2016-03-24

Optical modulator driver circuit and optical transmitter

#95
20160079936
2016-03-17

Trans-impedance amplifier arrangement and control module

#96
20160056785
2016-02-25

Gain calibration for an imaging system

#97
20150277470
2015-10-01

Current mirror circuit and receiver using the same

#98
20150248574
2015-09-03

Finger biometric sensing device including series coupled error compensation and drive signal nulling circuitry and related methods

#99
20150214913
2015-07-30

Hybrid fiber amplifier and method for adjusting gain and gain slope thereof

#100
20150207469
2015-07-23

Preamplifier, optical receiver, optical termination device, and optical communication system

#101
20150163010
2015-06-11

Burst signal receiving apparatus and method, PON optical line terminal, and PON system

#102
20150155951
2015-06-04

Receiver and reception method

#103
20150153157
2015-06-04

Intensity noise reduction methods and apparatus for interferometric sensing and imaging systems

#104
20150097622
2015-04-09

Amplifier circuit

#105
20150071654
2015-03-12

Current voltage conversion circuit, light receiving apparatus, and light transmission system

#106
20150003843
2015-01-01

Open-gain trans-impedance amplifier with programmable input impedance

#107
20140341584
2014-11-20

High-bandwidth underwater data communication system

#108
20140263946
2014-09-18

Avalanche photo diode detector control systems and method

#109
20140184333
2014-07-03

Feedback amplifier

#110
20140097901
2014-04-10

Automatic gain control circuit

#111
20140055770
2014-02-27

Distance measuring methods

#112
20130343769
2013-12-26

Optical receiver

#113
20130315451
2013-11-28

Finger biometric sensing device including error compensation circuitry and related methods

#114
20130294662
2013-11-07

Finger biometric sensing device including drive signal nulling circuitry and related methods

#115
20130169365
2013-07-04

Automatic gain control feedback amplifier

#116
20130121707
2013-05-16

Linear burst mode receiver

#117
20130101300
2013-04-25

Power adjustment of in-phase and quadrature components at a coherent optical receiver

#118
20130082776
2013-04-04

Amplifier for receiving optical signals complementary to each other

#119
20130068935
2013-03-21

Light receiving circuit

#120
20120249240
2012-10-04

System and method for effectively implementing a front end for a transimpedance amplifier

#121
20120217381
2012-08-30

Variable gain amplifier compensating frequency response thereof

#122
20120170018
2012-07-05

Distance measuring

#123
20120154012
2012-06-21

Circuit and method for controlling multi-channel power

#124
20120080583
2012-04-05

Avalanche photodiode operating voltage selection algorithm

#125
20120032740
2012-02-09

Amplifier for receiving intermittent optical signal

#126
20120018622
2012-01-26

Differential amplifier with function of variable gain and optical receiver implemented with the same

#127
20110316622
2011-12-29

Electronic circuit

#128
20110291766
2011-12-01

Transimpedance amplifier and PON system

#129
20110228280
2011-09-22

Intensity noise reduction methods and apparatus for interferometric sensing and imaging systems

#130
20110129224
2011-06-02

Amplifier and optical module performing gain control

#131
20100315166
2010-12-16

Variable gain circuit

#132
20100277075
2010-11-04

Long range proximity and/or motion detector with ambient light detection capabilities

#133
20100272448
2010-10-28

OPTICAL BURST SIGNAL RECEIVING DEVICE

#134
20100195088
2010-08-05

Distance measuring instrument and method

#135
20100097008
2010-04-22

Power Control Circuit of Photo Coupler

#136
20100067924
2010-03-18

Optical receiver

#137
20100046601
2010-02-25

High speed receive equalizer architecture

#138
20100044552
2010-02-25

AUTOMATIC SIMULTANEOUS DUAL GAIN READOUT INTEGRATED CIRCUIT USING THRESHOLD VOLTAGE SHIFTS OF MOSFET BULK TO SOURCE POTENTIAL

#139
20100014866
2010-01-21

Digital automatic gain control apparatus and method in burst mode optical receiver

#140
20090284316
2009-11-19

Amplifier device

#141
20090264145
2009-10-22

DYNAMIC BIAS FOR RF POWER AMPLIFIERS

#142
20090252504
2009-10-08

Optical receiver

#143
20090247105
2009-10-01

Method and circuit for adaptive automatic gain control

#144
20090245804
2009-10-01

System and method for improved infrared communication between consumer appliances

#145
20090236502
2009-09-24

OPTICAL RECEIVER UTILIZING APD AND CONTROL METHOD THEREOF

#146
20090191820
2009-07-30

Signal value holding apparatus, signal value holding method, signal value control system, signal value control method, playback apparatus, and playback method

#147
20090163784
2009-06-25

Ultra-low-power pulse oximeter implemented with an energy-efficient photoreceptor

#148
20090072908
2009-03-19

Gain control circuit and optical recording and reproducing device using thereof

#149
20090051458
2009-02-26

Receiver with adaptive equalizer

#150
20090008535
2009-01-08

Differential amplifier circuit, operational amplifier circuit, light-receiving amplifier circuit using the same, function selection circuit, and light-receiving circuit using the same

#151
20080309407
2008-12-18

Transimpedance amplifier

#152
20080308713
2008-12-18

Variable gain constant bandwidth trans-impedance amplifier for fiber optic rate sensor

#153
20080290257
2008-11-27

Automatic gain control in photodetectors

#154
20080284522
2008-11-20

Linear transimpedance amplifier with multiplexed gain stage

#155
20080258814
2008-10-23

Variable gain amplifier and method for achieving variable gain amplification with high bandwidth and linearity

#156
20080238542
2008-10-02

Variable gain amplifier and method for achieving variable gain amplification with high bandwidth and linearity

#157
20080230684
2008-09-25

Gain control system for visible light communication systems

#158
20080197890
2008-08-21

Light receiving circuit

#159
20080135735
2008-06-12

SIGNAL-ENHANCEMENT SYSTEM FOR PHOTODETECTOR OUTPUTS

#160
20080101803
2008-05-01

High dynamic range optical receiver

#161
20080056732
2008-03-06

Receiving circuit and optical signal receiving circuit

#162
20080007344
2008-01-10

DC offset cancellation for a trans-impedance amplifier

#163
20070292139
2007-12-20

Receiving method and receiving circuit

#164
20070286601
2007-12-13

Optical transmission system, optical receiver, and its gain adjustment method

#165
20070280088
2007-12-06

Method and apparatus for blank detection of an optical disc

#166
20070229162
2007-10-04

Electronic circuit

#167
20070213022
2007-09-13

Gain control for wireless receiver

#168
20070189780
2007-08-16

Fiber-to-the-home (FTTH) optical receiver with distributed gain control

#169
20070146080
2007-06-28

Burst-mode TIA (trans-impedance amplifier)

#170
20070098416
2007-05-03

Optical receiver and discrimination-threshold generating method

#171
20070071455
2007-03-29

Automatic gain control

#172
20070040610
2007-02-22

Automatic gain controller

#173
20070026829
2007-02-01

Automatic gain controllers and methods for controlling voltage of control gain amplifiers

#174
20060268969
2006-11-30

Automatic bit rate control circuit

#175
20060251428
2006-11-09

Method and system for converting an optical received pulse train into an electrical output pulse train

#176
20060226913
2006-10-12

Circuit for varying gain of preamplifier

#177
20060226900
2006-10-12

Demodulation and regulation concept for IR receivers

#178
20060216042
2006-09-28

Automatic gain control circuit for infrared receiver

#179
20060166630
2006-07-27

Dynamic bias for RF power amplifiers

#180
20060160506
2006-07-20

Methods and apparatus for calibrating and controlling output power levels in a broadband communication system

#181
20060109051
2006-05-25

Gain adjustment method, gain adjustment circuit, and optical disc device having same gain adjustment circuit

#182
20060086891
2006-04-27

Signal-enhancement system for photodetector outputs

#183
20060028279
2006-02-09

Automatic gain control feedback amplifier

#184
20050271169
2005-12-08

High speed receive equalizer architecture

#185
20050264351
2005-12-01

Transresistance amplifier for a charged particle detector

#186
20050248329
2005-11-10

Current voltage converter circuit

#187
20050238014
2005-10-27

Receiver and method for receiving burst mode packet

#188
20050226119
2005-10-13

Reproduction apparatus and information recording medium testing apparatus

#189
20050152705
2005-07-14

Gain variable amplifier, carrier detection system, and infrared remote-control receiver using them

#190
20050151677
2005-07-14

Analog front end circuit for converting analog signal outputted by image sensor into digital signal

#191
20050140454
2005-06-30

Optical receiver for an optical communication

#192
20050128007
2005-06-16

Preamplifier circuit, clock switching circuit, and optical receiver

#193
20050123307
2005-06-09

Optical receiver and data communication apparatus comprising same

#194
20050078966
2005-04-14

Identification level control method and optical receiver

#195
20050063270
2005-03-24

Amplifier circuit for optical disk drive

#196
20050046482
2005-03-03

Receiver circuit

#197
20050012549
2005-01-20

Amplifier circuit having signal detection function

#198
20050003786
2005-01-06

Carrier detecting circuit and infrared communication device using same

#199
17675857
2022-10-11

Techniques for automatic gain control in a time domain for a signal path for a frequency modulated continuous wave (FMCW) light detection and ranging (LIDAR) system

#200
16135914
2019-12-03

Optical receivers with dc cancellation bias circuit and embedded offset cancellation

#201
15958938
2019-07-02

Visual light audio transmission system

#202
15927537
2019-01-01

Automatic gain control loop

#203
15844609
2019-01-01

Trans-impedance amplifier