Patents-Review.com
ClassID:

219678 ⎘

H03F2200/534 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers Transformer coupled at the input of an amplifier

Recent Application in this class:
#1
20260058617
2026-02-26

LOW NOISE AMPLIFIER INCORPORATING SUTARDJA TRANSFORMER

 #2
20260045915
2026-02-12

AMPLIFIER CIRCUIT

 #3
20250364955
2025-11-27

SEMICONDUCTOR DEVICE AND OPERATING METHOD THEREOF

 #4
20250274087
2025-08-28

MATCHING NETWORK FOR A POWER AMPLIFIER

 #5
20250274081
2025-08-28

DIFFERENTIAL AMPLIFIER INCLUDING DUAL MAGNETICALLY COUPLED FEEDBACK LOOPS

 #6
20250159788
2025-05-15

FRONT END SYSTEMS WITH SELECTIVELY SHIELDED RADIO FREQUENCY MODULE

 #7
20250159787
2025-05-15

PACKAGED MODULE WITH FRONT END INTEGRATED CIRCUIT AND STACKED FILTER ASSEMBLY

 #8
20250159786
2025-05-15

PACKAGED MODULE WITH FRONT END INTEGRATED CIRCUIT, CRYSTAL, AND SYSTEM-ON-A-CHIP

 #9
20250070719
2025-02-27

HIGH EFFICIENCY ULTRA-WIDEBAND AMPLIFIER

 #10
20240098864
2024-03-21

Packaged module with antenna and front end integrated circuit

 #11
20240097628
2024-03-21

Power Amplifier with Current Reuse

 #12
20240088836
2024-03-14

Radio-frequency Circuitry with Shapable Differential Coupled Lines for Low-loss Impedance Matching

 #13
20230198485
2023-06-22

BIDIRECTIONAL AMPLIFIER INCLUDING MATCHING CIRCUITS HAVING SYMMETRICAL STRUCTURE AND COMMUNICATION DEVICE INCLUDING THE SAME

 #14
20230134242
2023-05-04

DIFFERENTIAL AMPLIFYING APPARATUS

 #15
20230114571
2023-04-13

GAIN BOOSTING IN POWER AMPLIFIERS USING RF-COUPLED FEEDBACK

 #16
20230013875
2023-01-19

Balun

 #17
20220321067
2022-10-06

LOW NOISE AMPLIFIER INCORPORATING SUTARDJA TRANSFORMER

 #18
20220311391
2022-09-29

Wideband low-noise amplifier

 #19
20220103134
2022-03-31

Differential amplifier including dual magnetically coupled feedback loops

 #20
20220103133
2022-03-31

Amplifier including magnetically coupled feedback loop and stacked input and output stages adapted for DC current reuse

 #21
20220103132
2022-03-31

Amplifier linearization using magnetically coupled feedback

 #22
20220103131
2022-03-31

Amplifier linearization using magnetically coupled feedback provided by a transformer coupled to a balun-based load

 #23
20220102070
2022-03-31

Method of improving linearity of amplifier circuit including magnetically coupled feedback loop and DC bias current adjustment without impacting amplifier gain

 #24
20220060158
2022-02-24

Power amplifier module

 #25
20220029592
2022-01-27

Dual-mode power amplifier with switchable working power and mode switch method

 #26
20210399701
2021-12-23

Differential amplifier circuit

 #27
20210351746
2021-11-11

High efficiency ultra-wideband amplifier

 #28
20210249996
2021-08-12

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

 #29
20210218375
2021-07-15

Load modulated balanced power amplifier integrated circuits including transformer-based hybrid splitter/combiner circuits

 #30
20210217714
2021-07-15

Selectively shielded radio frequency module with multi-mode stacked power amplifier stage

 #31
20210217713
2021-07-15

Front end systems with multi-mode power amplifier stage and overload protection of low noise amplifier

 #32
20200403584
2020-12-24

Transformer based switches and systems for PALNA transceivers

 #33
20200357756
2020-11-12

Selectively shielded radio frequency module with linearized low noise amplifier

 #34
20200274495
2020-08-27

Transformer-based doherty power amplifier

 #35
20200119701
2020-04-16

Power amplification device, terminal having the same, and base station having the same

 #36
20200099348
2020-03-26

Load-line switching for push-pull power amplifiers

 #37
20200052663
2020-02-13

Power amplifier module

 #38
20190377100
2019-12-12

METAL DETECTOR FOR BURIED AND CORRODED PIPELINE

 #39
20190325855
2019-10-24

Inductive distortion system and method

 #40
20190288646
2019-09-19

Power amplifier for millimeter wave devices

 #41
20190280657
2019-09-12

Amplifier output stage using toroidal transformer

 #42
20190267946
2019-08-29

Method and apparatus for using back gate biasing for power amplifiers for millimeter wave devices

 #43
20190253027
2019-08-15

Continuous-mode harmonically tuned power amplifier output networks and systems including same

 #44
20190230132
2019-07-25

Access control to a voice service by a wireless access point

 #45
20190214354
2019-07-11

Front end systems with linearized low noise amplifier and injection-locked oscillator power amplifier stage

 #46
20190190454
2019-06-20

Amplifier circuit

 #47
20190190453
2019-06-20

Power amplifier for millimeter wave devices

 #48
20190173439
2019-06-06

Power amplifier circuit

 #49
20190165733
2019-05-30

High efficiency ultra-wideband amplifier

 #50
20190109574
2019-04-11

System and method for biasing an RF circuit

 #51
20190089317
2019-03-21

Broadband harmonic matching network

 #52
20190058445
2019-02-21

Asymmetrical parallel-combining (APC) technique for RF power amplifier

 #53
20180375478
2018-12-27

CMOS RF front-end of transmitter for rotational spectroscopy

 #54
20180367171
2018-12-20

Linearization of a radiofrequency-signal transmission chain

 #55
20180323754
2018-11-08

Power amplification device, terminal having the same, and base station having the same

 #56
20180323753
2018-11-08

Audio amplifier power supply rail-balancing and anti-pumping system

 #57
20180309411
2018-10-25

Push-pull amplification systems and methods

 #58
20180287559
2018-10-04

Circuits for wireless communication on multiple frequency bands

 #59
20180241352
2018-08-23

Apparatus and method for improving efficiency of power amplifier

 #60
20180226367
2018-08-09

Front end systems and related devices, integrated circuits, modules, and methods

 #61
20180167048
2018-06-14

Impedance matching circuit of communication apparatus

 #62
20180167043
2018-06-14

Gate drive circuit and method of operating the same

 #63
20180152153
2018-05-31

Semiconductor integrated circuit, communication module, and smart meter

 #64
20180145647
2018-05-24

Semiconductor integrated circuit, communication module, and smart meter

 #65
20180123532
2018-05-03

Differential source follower driven power amplifier

 #66
20180076778
2018-03-15

Scaleable RF tuned low noise amplifier

 #67
20180006611
2018-01-04

Doherty amplifier circuits

 #68
20170359029
2017-12-14

Amplifiers operating in envelope tracking mode or non-envelope tracking mode

 #69
20170338847
2017-11-23

Systems, devices and methods related to stacked radio-frequency devices

 #70
20170338783
2017-11-23

Active transformer, corresponding apparatus and method

 #71
20170302234
2017-10-19

Circuit for amplifying radio signal using high frequency

 #72
20170264252
2017-09-14

Active linearization for broadband amplifiers

 #73
20170257069
2017-09-07

Systems for amplifying a signal using a transformer matched transistor

 #74
20170244364
2017-08-24

Power-adjustable radio frequency output circuit

 #75
20170237407
2017-08-17

Transformer based impedance matching network and related power amplifier, ADPLL and transmitter based thereon

 #76
20170237402
2017-08-17

RF amplifier to increase gain using transformer

 #77
20170222609
2017-08-03

RF transformer for differential amplifier

 #78
20170207750
2017-07-20

Very high fidelity audio amplifier

 #79
20170201408
2017-07-13

WIRELESS RECEIVER FOR CARRIER AGGREGATION

 #80
20170179894
2017-06-22

Amplifier and method of operating same

 #81
20170133989
2017-05-11

Bias control for stacked transistor configuration

 #82
20170132996
2017-05-11

Inductive distortion system and method

 #83
20170070199
2017-03-09

Radio frequency circuitr having an integrated harmonic filter and a radio frequency circuit having transistors of different threshold voltages

 #84
20170063316
2017-03-02

High efficiency ultra-wideband amplifier

 #85
20170040902
2017-02-09

Switching mode power amplifier with load isolation

 #86
20170019077
2017-01-19

Driver

 #87
20170005630
2017-01-05

Scaleable RF tuned low noise amplifier

 #88
20160320781
2016-11-03

Memory effect reduction using low impedance biasing

 #89
20160268983
2016-09-15

Semiconductor integrated circuit, communication module, and smart meter

 #90
20160268978
2016-09-15

Semiconductor integrated circuit, communication module, and smart meter

 #91
20160254838
2016-09-01

Systems, devices and methods related to stacked band selection switch devices

 #92
20160241303
2016-08-18

Upstream power amplifier

 #93
20160241199
2016-08-18

Control systems and methods for power amplifiers operating in envelope tracking mode

 #94
20160233849
2016-08-11

Inductively coupled transformer with tunable impedance match network

 #95
20160226461
2016-08-04

Super-efficient single-stage isolated switching power amplifier

 #96
20160190993
2016-06-30

Amplifiers operating in envelope tracking mode or non-envelope tracking mode

 #97
20160190989
2016-06-30

Optimization methods for amplifier with variable supply power

 #98
20160164469
2016-06-09

Amplifier dynamic bias adjustment for envelope tracking

 #99
20160164468
2016-06-09

Amplifier dynamic bias adjustment for envelope tracking

 #100
20160149543
2016-05-26

Linear row array integrated power combiner for RF power amplifiers

 #101
20160118941
2016-04-28

Amplification of a radio frequency signal

 #102
20160099700
2016-04-07

CMOS tuner and related tuning algorithm for a passive adaptive antenna matching network suitable for use with agile RF transceivers

 #103
20160099691
2016-04-07

Transformer based impedance matching network and related power amplifier, ADPLL and transmitter based thereon

 #104
20160099685
2016-04-07

60 GHz wideband class E/Fpower amplifier

 #105
20160056769
2016-02-25

Power amplification module

 #106
20150311873
2015-10-29

Radio frequency power amplifier and method for increasing power added efficiency and linearity

 #107
20150270806
2015-09-24

Bias control for stacked transistor configuration

 #108
20150249437
2015-09-03

Variable gain multistage amplifier and receiver

 #109
20150248964
2015-09-03

Transformers and methods for fabricating transformers

 #110
20150214994
2015-07-30

Three-dimensional power amplifier architecture

 #111
20150194884
2015-07-09

Direct current (DC)-DC converter having a multi-stage output filter

 #112
20150145599
2015-05-28

Radio frequency signal amplifying system

 #113
20150130540
2015-05-14

Amplifier

 #114
20150123728
2015-05-07

Memory effect reduction using low impedance biasing

 #115
20150116037
2015-04-30

Variable matching circuit and amplifier

 #116
20150084688
2015-03-26

Baseband processing circuitry

 #117
20150043625
2015-02-12

Upstream power amplifier

 #118
20140306755
2014-10-16

Low inductance transformer

 #119
20140301570
2014-10-09

Voice alarm amplifier

 #120
20140284493
2014-09-25

Preamplifier for charged particle detection

 #121
20140240046
2014-08-28

Systems and methods for operating a power amplifier

 #122
20140184337
2014-07-03

Control systems and methods for power amplifiers operating in envelope tracking mode

 #123
20140184336
2014-07-03

Amplifier dynamic bias adjustment for envelope tracking

 #124
20140184335
2014-07-03

Amplifiers operating in envelope tracking mode or non-envelope tracking mode

 #125
20140184334
2014-07-03

Optimization methods for amplifier with variable supply power

 #126
20140167864
2014-06-19

Tunable wide band driver amplifier

 #127
20140125417
2014-05-08

Systems and methods for boosting a received AC signal using a power amplifier including phase conditioners

 #128
20140125126
2014-05-08

Power distribution circuit

 #129
20140087673
2014-03-27

CMOS based TX/RX switch

 #130
20140087672
2014-03-27

CMOS based RF antenna switch

 #131
20140087671
2014-03-27

Radio frequency front end module circuit incorporating an efficient high linearity power amplifier

 #132
20140085008
2014-03-27

Envelope tracking signal generator incorporating trim cell

 #133
20140085006
2014-03-27

Efficient linear integrated power amplifier incorporating low and high power operating modes

 #134
20140085002
2014-03-27

Two dimensional quad integrated power combiner for RF power amplifiers

 #135
20140085001
2014-03-27

Linear row array integrated power combiner for RF power amplifiers

 #136
20140084880
2014-03-27

DC-DC converter incorporating trim cell

 #137
20140084700
2014-03-27

RF power amplifier splitter

 #138
20140015609
2014-01-16

Wide bandwidth radio frequency amplier having dual gate transistors

 #139
20130293310
2013-11-07

Dual inductive element charge pump buck and buck power supplies

 #140
20130271224
2013-10-17

Multiband RF switch ground isolation

 #141
20130271221
2013-10-17

Direct current (DC)-DC converter having a multi-stage output filter

 #142
20130265108
2013-10-10

Extremely high frequency dual-mode class AB power amplifier

 #143
20130250536
2013-09-26

Electronic device

 #144
20130222054
2013-08-29

Low distortion filters

 #145
20130217341
2013-08-22

High efficiency path based power amplifier circuitry

 #146
20130214863
2013-08-22

Front-end system for radio devices

 #147
20130177106
2013-07-11

Multiple functional equivalence digital communications interface

 #148
20130147445
2013-06-13

Voltage multiplier charge pump buck

 #149
20130135052
2013-05-30

Interference reduction between RF communications bands

 #150
20130079065
2013-03-28

MULTI-MODE POWER AMPLIFIER

 #151
20130043955
2013-02-21

Signal amplification circuits for receiving/transmitting signals according to input signal

 #152
20130043948
2013-02-21

SEMICONDUCTOR DEVICE FOR SIGNAL AMPLIFICATION

 #153
20130043945
2013-02-21

System and method for high-frequency amplifier

 #154
20130043944
2013-02-21

Cascaded converged power amplifier

 #155
20130040586
2013-02-14

System and method for improving power efficiency of a transmitter

 #156
20120326754
2012-12-27

High performance pre-mixer buffer in wireless communications systems

 #157
20120319779
2012-12-20

Transformer and CMOS power amplifier including the same

 #158
20120308051
2012-12-06

Method and arrangement for driving a microphone

 #159
20120302186
2012-11-29

Independent PA biasing of a driver stage and a final stage

 #160
20120299661
2012-11-29

PA bias power supply undershoot compensation

 #161
20120299660
2012-11-29

Selecting PA bias levels of RF PA circuitry during a multislot burst

 #162
20120299647
2012-11-29

PA envelope power supply undershoot compensation

 #163
20120299646
2012-11-29

Selecting a converter operating mode of a PA envelope power supply

 #164
20120299645
2012-11-29

Temperature correcting an envelope power supply signal for RF PA circuitry

 #165
20120293267
2012-11-22

Low noise amplifier including a single-ended input

 #166
20120282869
2012-11-08

RF PA linearity requirements based converter operating mode selection

 #167
20120280752
2012-11-08

Embedded RF PA temperature compensating bias transistor

 #168
20120280747
2012-11-08

Feedback based buck timing of a direct current (DC)-DC converter

 #169
20120280746
2012-11-08

DC-DC converter semiconductor die structure

 #170
20120235736
2012-09-20

Charge pump based power amplifier envelope power supply and bias power supply

 #171
20120229210
2012-09-13

Overlay class F choke

 #172
20120223774
2012-09-06

Look-up table based configuration of multi-mode multi-band radio frequency power amplifier circuitry

 #173
20120223773
2012-09-06

Linear mode and non-linear mode quadrature PA circuitry

 #174
20120201258
2012-08-09

Asymmetrical transformer output demultiplexing (atodem) circuit

 #175
20120200356
2012-08-09

Enhanced transformer output demultiplexing method (ETODEM)

 #176
20120184233
2012-07-19

Combined RF detector and RF attenuator with concurrent outputs

 #177
20120176197
2012-07-12

RF power amplifier

 #178
20120170690
2012-07-05

Auto configurable 2/3 wire serial interface

 #179
20120161880
2012-06-28

Techniques on input transformer to push the OP1dB higher in power amplifier design

 #180
20120161879
2012-06-28

Techniques to improve the stress issue in cascode power amplifier design

 #181
20120161877
2012-06-28

PA bias power supply efficiency optimization

 #182
20120098595
2012-04-26

Quadrature power amplifier architecture

 #183
20120062322
2012-03-15

Power amplifier with transistor input mismatching

 #184
20120056681
2012-03-08

Signal amplification circuits for receiving/transmitting signals according to input signal

 #185
20120046004
2012-02-23

High performance transmitter preamplification chain with calibration feedback

 #186
20120009889
2012-01-12

Narrow-band tunable radio frequency (RF) power amplifiers and related methods

 #187
20120007675
2012-01-12

Power amplifier

 #188
20120001692
2012-01-05

Adaptive power amplifier

 #189
20110316631
2011-12-29

LNA circuit for use in a low-cost receiver circuit

 #190
20110309884
2011-12-22

Solid-state RF power amplifier for radio transmitters

 #191
20110304391
2011-12-15

Decade bandwidth planar MMIC four port transformer

 #192
20110300810
2011-12-08

Transceiver including a weaved connection

 #193
20110248782
2011-10-13

RF power amplifier

 #194
20110222444
2011-09-15

Split-band power amplifiers and duplexers for LTE-advanced front end for improved IMD

 #195
20110222443
2011-09-15

LTE-Advanced (4G) front end radio architecture

 #196
20110221522
2011-09-15

Sharing of inductor interstage matching in parallel amplification system for wireless communication systems

 #197
20110140787
2011-06-16

Method and system for amplifying a signal using a transformer matched transistor

 #198
20110140781
2011-06-16

IMPEDANCE MATCHING CIRCUIT ELIMINATING INTERFERENCE BETWEEN SIGNAL LINES AND POWER AMPLIFIER HAVING THE SAME

 #199
20110133835
2011-06-09

Double transformer balun for maximum power amplifier power

 #200
20110115565
2011-05-19

Cascaded amplifiers with transformer-based bypass mode

 #201
20110102084
2011-05-05

Multi-stage CMOS power amplifier

 #202
20110086594
2011-04-14

Providing a temperature dependent bias for a device

 #203
20110081879
2011-04-07

Amplifier circuit and communication device

 #204
20110007839
2011-01-13

Spur cancellation in a digital baseband transmit signal using cancelling tones

 #205
20100308914
2010-12-09

Low noise amplifier

 #206
20100289028
2010-11-18

Display device

 #207
20100289027
2010-11-18

Electronic device, constituted by using thin-film transistors

 #208
20100272214
2010-10-28

Outphasing amplification of digital modulated signals in a radiofrequency transmission system

 #209
20100244962
2010-09-30

Distributed active transformer based millimeter-wave power amplifier circuit

 #210
20100244955
2010-09-30

Reconfigurable distributed active transformers

 #211
20100231305
2010-09-16

Semiconductor device for signal amplification

 #212
20100225400
2010-09-09

Method and system for on-chip impedance control to impedance match a configurable front end

 #213
20100219890
2010-09-02

Low noise amplifier

 #214
20100171554
2010-07-08

Offset cancellation for DC isolated nodes

 #215
20100164628
2010-07-01

Distributed active transformer amplifier with differential power combiner

 #216
20100156537
2010-06-24

Solid-state RF power amplifier for radio transmitters

 #217
20100141339
2010-06-10

Apparatus and method for broadband amplifier linearization

 #218
20100117737
2010-05-13

RF power amplifier

 #219
20100102885
2010-04-29

Method and system for amplifying a signal using a transformer matched transistor

 #220
20100066335
2010-03-18

Power conversion regulator with predictive energy balancing

 #221
20100060362
2010-03-11

Cascode circuit

 #222
20100052784
2010-03-04

Low noise amplifier

 #223
20100033253
2010-02-11

Techniques for improving balun loaded-Q

 #224
20100029227
2010-02-04

Multi-mode configurable transmitter circuit

 #225
20100007416
2010-01-14

Wideband differential amplifier including single-ended amplifiers coupled to a four-port transformer

 #226
20090289630
2009-11-26

Inductive decoupling of a RF coil array

 #227
20090285579
2009-11-19

Linearized trans-impedance amplifiers

 #228
20090261901
2009-10-22

Decade bandwidth planar MMIC four port transformer

 #229
20090202255
2009-08-13

Optical receiver with automatic distortion cancellation

 #230
20090195312
2009-08-06

Differential amplifier

 #231
20090134951
2009-05-28

Broadband reciprocal active balun structure

 #232
20090115529
2009-05-07

Power amplifier having input ends combined in series and output ends combined in series

 #233
20090103652
2009-04-23

SAMPLING RECEIVER

 #234
20090096533
2009-04-16

Adaptively tuned RF power amplifier

 #235
20090075597
2009-03-19

DEVICE, SYSTEM, AND METHOD OF LOW-NOISE AMPLIFIER

 #236
20090002071
2009-01-01

Distributed circular geometry power amplifier architecture

 #237
20080312523
2008-12-18

Apparatus and Method for Reducing Interference

 #238
20080309411
2008-12-18

Radio frequency signal amplifying device

 #239
20080218263
2008-09-11

Widebrand differential amplifier including single-ended amplifiers coupled to a four-port transformer

 #240
20080205897
2008-08-28

Linearized trans-impedance amplifier

 #241
20080204139
2008-08-28

Reconfigurable distributed active transformers

 #242
20080139158
2008-06-12

Method and system for a transformer-based high performance cross-coupled low noise amplifier

 #243
20080139131
2008-06-12

Switched impedance transformer for semiconductor circuits

 #244
20080042152
2008-02-21

Electronic device, display device, interface circuit and differential amplification device, which are constituted by using thin-film transistors

 #245
20080036532
2008-02-14

Transmitter power amplifier working at different power supplies

 #246
20080014878
2008-01-17

Radio frequency integrated circuit electro-static discharge circuit

 #247
20070285168
2007-12-13

Solid-state RF power amplifier for radio transmitters

 #248
20070279131
2007-12-06

Variable gain amplifier and differential amplifier

 #249
20070188238
2007-08-16

Single-ended input to differential-ended output low noise amplifier implemented with cascode and cascade topology

 #250
20070152751
2007-07-05

Wide bandwidth, high power amplifier

 #251
20070115060
2007-05-24

Power conversion regulator with exponentiating feedback loop

 #252
20070103235
2007-05-10

Inductorless broadband RF low noise amplifier

 #253
20070103122
2007-05-10

Power conversion regulator with predictive energy balancing

 #254
20070046376
2007-03-01

Neutralization of feedback capacitance in amplifiers

 #255
20070040612
2007-02-22

Push-pull amplifier with transformational negative feedback

 #256
20070030071
2007-02-08

Reconfigurable distributed active transformers

 #257
20070023616
2007-02-01

Signal Detection System

 #258
20060250187
2006-11-09

Distributed circular geometry power amplifier architecture

 #259
20060040621
2006-02-23

Radio frequency integrated circuit electo-static discharge circuit

 #260
20060006949
2006-01-12

Method and apparatus for an improved power amplifier

 #261
20060006946
2006-01-12

Method and apparatus for an improved power amplifier

 #262
20060006934
2006-01-12

Method and apparatus for an improved power amplifier

 #263
20060001487
2006-01-05

Even order distortion elimination in push-pull or differential amplifiers and circuits

 #264
20050277826
2005-12-15

Apparatus and method for reducing interference

 #265
20050237112
2005-10-27

Even order distortion elimination in push-pull or differential amplifiers and circuits

 #266
20050226443
2005-10-13

Method for RIAA correction of audio signal with use of transformer and capacitor

 #267
20050206490
2005-09-22

Double transformer balun for maximum power amplifier power

 #268
20050200387
2005-09-15

Method for RIAA correction without capacitors in correcting circuits

 #269
20050195038
2005-09-08

Linearized trans-impedance amplifier

 #270
20050140447
2005-06-30

Reconfigurable distributed active transformers

 #271
20050030098
2005-02-10

Distributed circular geometry power amplifier architecture

 #272
20050001680
2005-01-06

Low-noise preamplifier, in particular, for nuclear magnetic resonance (NMR)

 #273
15915832
2019-06-11

Amplifier output stage using toroidal transformer

 #274
15908678
2019-05-14

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