ClassID:

219543

H03F2200/165 - page 2 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers A filter circuit coupled to the input of an amplifier

Recent Application in this class:
#301
20180062682
2018-03-01

Filtering architectures and methods for wireless applications

#302
20180062593
2018-03-01

Class-D amplifier circuits

#303
20180062582
2018-03-01

LOW-NOISE AMPLIFIER HAVING INTER-STAGE FILTER

#304
20180062578
2018-03-01

Power amplifier circuit

#305
20180055409
2018-03-01

Reconfigurable sensor circuit

#306
20180041174
2018-02-08

High-frequency module and communication apparatus

#307
20180041173
2018-02-08

Configurable control loop topology for a pulse width modulation amplifier

#308
20180027326
2018-01-25

Signal enhancement

#309
20180007650
2018-01-04

Circuits and operating methods thereof for correcting phase errors caused by gallium nitride devices

#310
20170373722
2017-12-28

Receiver circuit

#311
20170359041
2017-12-14

Buffer with increased headroom

#312
20170353876
2017-12-07

RF receiver with built-in self-test function

#313
20170350923
2017-12-07

Load detector

#314
20170346452
2017-11-30

Radio frequency filter, radio frequency front-end circuit, communication device, and design method for radio frequency filter

#315
20170310290
2017-10-26

Amplifiers

#316
20170301655
2017-10-19

Reduced form factor radio frequency system-in-package

#317
20170301654
2017-10-19

System in package with vertically arranged radio frequency componentry

#318
20170294885
2017-10-12

Adaptive power amplifier and radio frequency transmitter thereof

#319
20170288614
2017-10-05

High-frequency signal amplifier circuit, power amplifier module, front-end circuit, and communication apparatus

#320
20170272106
2017-09-21

Amplifier adjusting device, system including an amplifier adjusting device and method for operating an amplifier adjusting device

#321
20170272044
2017-09-21

Removal of switching discontinuity in a hybrid switched mode amplifier

#322
20170244396
2017-08-24

Method And Apparatus For Cancellation Of Spurious Signals

#323
20170237404
2017-08-17

Weakly coupled tunable RF receiver architecture

#324
20170222608
2017-08-03

Adaptive bias circuit for a radio frequency (RF) amplifier

#325
20170214421
2017-07-27

Method and system for a configurable low-noise amplifier with programmable band-selection filters

#326
20170214366
2017-07-27

High-efficiency high-integrated receiver

#327
20170212193
2017-07-27

Magnetic resonance imaging apparatus, radio frequency amplification system and method

#328
20170187341
2017-06-29

Amplification circuit, optical module, and amplification method

#329
20170179883
2017-06-22

Multimode voltage controlled oscillator

#330
20170163229
2017-06-08

Power amplification module

#331
20170163224
2017-06-08

Negative impedance circuit

#332
20170163216
2017-06-08

Power amplifier circuit

#333
20170153279
2017-06-01

Lock-in amplifier, integrated circuit and portable measurement device including the same

#334
20170141746
2017-05-18

High linearly WiGig baseband amplifier with channel select filter

#335
20170141736
2017-05-18

Broadband envelope tracking

#336
20170126182
2017-05-04

Implementing enhanced CMOS inverter based optical transimpedance amplifier

#337
20170111736
2017-04-20

Audio bass compensation system and compensation method

#338
20170093354
2017-03-30

Single conversion receiver and communication system including same

#339
20170093344
2017-03-30

APPARATUS FOR AMPLIFYING HIGH VOLTAGE SIGNALS IN SPACE BASED SYSTEMS

#340
20170077882
2017-03-16

Class-D amplifier with pulse-width modulation common-mode control and associated method for performing class-D amplification

#341
20170077878
2017-03-16

Transimpedance amplifier

#342
20170064447
2017-03-02

Attenuating an input signal

#343
20170054423
2017-02-23

Amplifier Device

#344
20170033746
2017-02-02

Dynamic error vector magnitude duty cycle correction

#345
20170019079
2017-01-19

Class-D amplifier circuits

#346
20170012672
2017-01-12

Receiver circuit

#347
20170010360
2017-01-12

Detection of excessively high interference signal levels during reception of global navigation satellite system signals

#348
20170005677
2017-01-05

Dynamic bias control

#349
20160365909
2016-12-15

Electronic device and antenna control method thereof

#350
20160352291
2016-12-01

Power amplifier without a transformer

#351
20160308498
2016-10-20

Apparatus and method for gallium nitride (GaN) amplifiers

#352
20160301403
2016-10-13

Filtered sampling circuit and a method of controlling a filtered sampling circuit

#353
20160299519
2016-10-13

Zero drift, limitless and adjustable reference voltage generation

#354
20160294327
2016-10-06

Linearizing scheme for baseband filter with active feedback

#355
20160285418
2016-09-29

RF amplifier with conductor-less region underlying filter circuit inductor, and methods of manufacture thereof

#356
20160268979
2016-09-15

Amplifier

#357
20160261245
2016-09-08

Amplifier current consumption control

#358
20160248469
2016-08-25

Dynamic tuning of a transformer-based radio frequency power amplifier

#359
20160233905
2016-08-11

Tunable radio frequency low noise amplifier

#360
20160233843
2016-08-11

Amplifier with integral notch filter

#361
20160233840
2016-08-11

Sensor control circuit and electronic apparatus

#362
20160226553
2016-08-04

Integrated CMOS transmit/receive switch in a radio frequency device

#363
20160226552
2016-08-04

Transmit-receive isolation in a transformer-based radio frequency power amplifier

#364
20160226474
2016-08-04

Forwarded clock jitter reduction

#365
20160226458
2016-08-04

Implementing enhanced CMOS inverter based optical transimpedence amplifier

#366
20160226456
2016-08-04

Implementing enhanced CMOS inverter based optical transimpedance amplifier

#367
20160211871
2016-07-21

High frequency power amplifier, high frequency front-end circuit, and radio communication device

#368
20160204966
2016-07-14

Receiver and wireless terminal for signal processing

#369
20160204751
2016-07-14

Class-D amplifiers and methods

#370
20160190992
2016-06-30

Bias circuit for a transistor amplifier

#371
20160190990
2016-06-30

Concurrent dual-band signal amplifier

#372
20160187385
2016-06-30

Amplification circuit and current sensor having the same

#373
20160173050
2016-06-16

Logarithmic amplifier with universal demodulation capabilities

#374
20160142022
2016-05-19

Multiband power amplification apparatus

#375
20160142016
2016-05-19

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

#376
20160133271
2016-05-12

Microphone With Electronic Noise Filter

#377
20160127112
2016-05-05

Systems for multi-peak-filter-based analog self-interference cancellation

#378
20160065154
2016-03-03

Travelling wave amplifier (TWA) for driving optical modulator

#379
20160065152
2016-03-03

System and method for low distortion capacitive signal source amplifier

#380
20160056765
2016-02-25

Frequency selective isolation circuit and method for suppressing parametric oscillation

#381
20160028156
2016-01-28

High-frequency filter including matching circuit

#382
20150349724
2015-12-03

Distortion cancellation for dual stage carrier-aggregation (CA) low noise amplifier (LNA) non-linear second order products

#383
20150349722
2015-12-03

Dual stage carrier-aggregation (CA) low noise amplifier (LNA) having harmonic rejection and high linearity

#384
20150349397
2015-12-03

Resonating filter and method thereof

#385
20150303885
2015-10-22

Class-D amplifier having mixed signal feedback control

#386
20150295543
2015-10-15

Logarithmic amplifier with universal demodulation capabilities

#387
20150270810
2015-09-24

Audio power amplifier

#388
20150264481
2015-09-17

Amplifier capable of controlling cut-off frequency in real time and amplification method for controlling cut-off frequency in real time

#389
20150256137
2015-09-10

Formant amplifier

#390
20150223319
2015-08-06

High frequency module

#391
20150171799
2015-06-18

Signal path termination

#392
20150162940
2015-06-11

TIA-to-ADC interface with low-noise and a wide-range of passive gain control

#393
20150162878
2015-06-11

Harmonics cancellation circuit for a power amplifier

#394
20150155836
2015-06-04

Nonlinear load pre-distortion for open loop envelope tracking

#395
20150146769
2015-05-28

Extended bandwidth adaptive digital pre-distortion with reconfigurable analog front-ends

#396
20150102873
2015-04-16

Cavity filter, power amplifying module

#397
20150097619
2015-04-09

Amplifier

#398
20150084688
2015-03-26

Baseband processing circuitry

#399
20150078420
2015-03-19

Amplification circuit

#400
20150077184
2015-03-19

Amplifier circuit

#401
20150070096
2015-03-12

Power amplifier

#402
20150054598
2015-02-26

Filter for switched mode power supply

#403
20140340159
2014-11-20

Circuit layout and method for frequency-dependent matching of a high-frequency amplifier stage

#404
20140335810
2014-11-13

Receiver for wireless communication system

#405
20140269892
2014-09-18

Apparatus and method for a digital transmitter architecture with outphasing power amplifier

#406
20140225680
2014-08-14

High-frequency filter

#407
20140180052
2014-06-26

Neural recording system

#408
20130250536
2013-09-26

Electronic device

#409
20130241653
2013-09-19

Instrumentation input systems

#410
20130099866
2013-04-25

System and method for a multi-band power-amplifier

#411
20130057346
2013-03-07

Apparatus and method for low noise amplification

#412
20130051582
2013-02-28

System and method for low distortion capacitive signal source amplifier

#413
20130049879
2013-02-28

Circuit module and measurement method

#414
20130029619
2013-01-31

Signal path termination

#415
20120293262
2012-11-22

Amplifier

#416
20120293259
2012-11-22

Amplifier

#417
20120178391
2012-07-12

Adjustable circuit architecture

#418
20120169565
2012-07-05

Tunable radio front end and methods

#419
20120154037
2012-06-21

Amplifier current consumption control

#420
20120139633
2012-06-07

SEMICONDUCTOR INTEGRATED CIRCUIT AND TUNER SYSTEM INCLUDING THE SAME

#421
20120105148
2012-05-03

AMPLIFIER CIRCUIT AND RADIO RECEIVER

#422
20120086513
2012-04-12

Instrumentation input systems

#423
20110298562
2011-12-08

High-frequency circuit

#424
20110294452
2011-12-01

ANTENNA AMPLIFIER DEVICE AND ANTENNA DEVICE PROVIDED IN MOBILE OBJECT

#425
20110207420
2011-08-25

Narrow band RF filter circuits, devices and processes using impedance translation

#426
20110193626
2011-08-11

Frequency response compensation amplifier arrangements

#427
20110095846
2011-04-28

Filter for switched mode power supply

#428
20100279641
2010-11-04

RECEIVER FOR WIRELESS COMMUNICATION SYSTEM

#429
20100274114
2010-10-28

Signal sensing in an implanted apparatus with an internal reference

#430
20100156538
2010-06-24

Amplifier circuit and radio receiver

#431
20100128898
2010-05-27

METHOD AND APPARATUS FOR OPERATION SEQUENCING OF AUDIO AMPLIFIERS

#432
20100099368
2010-04-22

Monolithic FM-band transmit power amplifier for mobile cellular devices and method of operation thereof

#433
20100007419
2010-01-14

Instrumentation input systems

#434
20090290728
2009-11-26

Dynamic contoured-sound/subwoofer-synthesis audio system

#435
20090196310
2009-08-06

Device and method for improved settling time in multiplexed input systems

#436
20090191907
2009-07-30

Method and apparatus for adaptively controlling signals

#437
20090190647
2009-07-30

Distortion compensating apparatus and power amplifier apparatus

#438
20090190464
2009-07-30

Method and apparatus for adaptively controlling signals

#439
20090189697
2009-07-30

Auto-tuning amplifier

#440
20090174474
2009-07-09

Power amplifier

#441
20090097581
2009-04-16

Method and apparatus for adaptively controlling signals

#442
20090096527
2009-04-16

Automatic gain control circuit and low noise amplifying circuit

#443
20090039975
2009-02-12

Electrical multiple-wire system for push-pull signal transmission with an attenuating or filtering element and data transmission bus

#444
20070290742
2007-12-20

Method for controlling a linear power amplifier

#445
20070288183
2007-12-13

ANALOG SIGNAL TRANSITION DETECTOR

#446
20070254592
2007-11-01

Method and apparatus for adaptively controlling signals

#447
20070024361
2007-02-01

Systems for pseudo-BD modulation

#448
20070021088
2007-01-25

Dual-band active filter

#449
20060262878
2006-11-23

Apparatus and method for modulating and digitally predistorting a signal in a multiple modulation schemes

#450
20050100084
2005-05-12

System and method for signal amplification

#451
18409310
2025-06-24

Multilevel amplifier systems and related techniques

#452
18171899
2026-02-10

Bandwidth adaptation in a transmission circuit

#453
17411031
2023-07-04

Audio power source with improved efficiency

#454
17155887
2024-02-20

Multilevel amplifier systems and related techniques

#455
17151877
2022-05-10

Dual-channel class-D audio amplifier having quantizer-combined orthogonal modulation

#456
17000852
2022-01-18

Amplifiers

#457
16749996
2020-12-22

Receiver circuits with blocker attenuating RF filter

#458
16690323
2020-12-29

Load diagnostics for audio amplifiers

#459
16599600
2020-12-22

Amplifier circuitry

#460
16565829
2020-08-18

Method and apparatus for simultaneous propagation of multiple clockfrequencies in serializer/deserializer (SerDes) Macros

#461
16525258
2020-10-06

Low power optical link

#462
16228420
2019-10-01

Reference voltage circuit with current buffer

#463
16143198
2020-01-07

Single-ended to differential signal conversion of analog signals

#464
16106339
2019-07-09

V-band digital control bandpass amplifier

#465
16052586
2019-10-01

Apparatuses and methods for a chopper instrumentation amplifier

#466
16001871
2019-06-18

Reconfigurable carrier aggregation FECC with switched filters and programmable band switching LNA

#467
15916897
2019-05-28

Balanced RF amplifier using a common mode choke

#468
15810147
2018-12-04

Circuit with co-matching topology for transmitting and receiving RF signals

#469
15728314
2019-01-08

Front end module with input match configurability

#470
15686773
2018-11-27

Integrated BPF and LNA input match

#471
15446847
2017-10-24

Wideband high linearity LNA with intra-band carrier aggregation support

#472
15289860
2018-01-02

Power amplifier circuit and method of design

#473
15227032
2017-10-10

Symmetrical positive and negative reference voltage generation

#474
15216814
2018-01-09

Rotated field effect transistor topology amplifier

#475
14633086
2017-10-24

Integrated amplifier system

#476
14606813
2016-08-30

Selectable-input-impedance radio-frequency reception amplifier

#477
14603127
2015-10-13

Spur cancellation using auxiliary synthesizer