ClassID:

220454

H03H7/1775 - CPC Classification

Classification description:

Multiple-port networks comprising only passive electrical elements as network components; Frequency selective two-port networks; Structural details of sub-circuits of frequency selective networks; Comprising typical LC combinations, irrespective of presence and location of additional resistors Parallel LC in shunt or branch path

Recent Application in this class:
#1
20260155803
2026-06-04

ELECTRONIC COMPONENT

#2
20250192812
2025-06-12

PHASE CHARACTERISTIC MEASUREMENT DEVICE, SIGNAL GENERATOR AND SIGNAL ANALYZER HAVING SAME, AND PHASE CHARACTERISTIC MEASUREMENT METHOD

#3
20250105814
2025-03-27

Isolation Between Filters Using Inductive Coupling Cancellation

#4
20240356512
2024-10-24

FILTER, INTEGRATED PASSIVE DEVICE AND ELECTRONIC DEVICE

#5
20240322779
2024-09-26

NOISE ELIMINATION CIRCUIT AND COMMUNICATION DEVICE INCLUDING THE SAME

#6
20240297631
2024-09-05

CIRCUIT DEVICE

#7
20240283421
2024-08-22

BRANCHING FILTER

#8
20240204742
2024-06-20

MULTILAYERED FILTER DEVICE

#9
20240128944
2024-04-18

MULTILAYER ELECTRONIC COMPONENT

#10
20240072754
2024-02-29

MULTILAYER FILTER

#11
20240048113
2024-02-08

FILTER DEVICE AND RADIO-FREQUENCY FRONT-END CIRCUIT INCLUDING THE SAME

#12
20230412137
2023-12-21

Multilayer LC filter

#13
20230378926
2023-11-23

ELECTRONIC COMPONENT AND COMMUNICATION APPARATUS

#14
20230268902
2023-08-24

FILTER

#15
20230216467
2023-07-06

SWITCHABLE-REACTOR UNIT, VARIABLE REACTOR, HIGH-FREQUENCY GENERATOR, AND IMPEDANCE ADJUSTMENT ASSEMBLY HAVING A SWITCHABLE-REACTOR UNIT

#16
20230058725
2023-02-23

Radio frequency filtering circuitry on integrated passive die

#17
20220399868
2022-12-15

Ultra-wide passband five-order band-pass filter based on LTCC process

#18
20220311406
2022-09-29

Radio frequency duplexer circuit and radio frequency substrate

#19
20220294408
2022-09-15

Multilayered filter device

#20
20220255524
2022-08-11

Band pass filter

#21
20220209736
2022-06-30

Multilayer LC filter

#22
20220209735
2022-06-30

Band antenna EMP filter apparatus having hemp protection capability

#23
20220115577
2022-04-14

Josephson Wide Band Multipexer-Demultiplexer Circuit

#24
20220076869
2022-03-10

Advanced 3D inductor structures with confined magnetic field

#25
20210391842
2021-12-16

High frequency multilayer filter

#26
20210257985
2021-08-19

Frontend module

#27
20210250111
2021-08-12

Multiplexer, filter, and communication device

#28
20210126607
2021-04-29

Radio frequency filtering circuitry on integrated passive die

#29
20210098853
2021-04-01

Harmonic trap filter using coupled resonators

#30
20210058051
2021-02-25

Band pass filter

#31
20210028753
2021-01-28

Diplexer

#32
20200328725
2020-10-15

Frontend module

#33
20200243254
2020-07-30

Multilayer band pass filter

#34
20200228085
2020-07-16

Capacitive-coupled bandpass filter

#35
20200204141
2020-06-25

High frequency multilayer filter

#36
20200204137
2020-06-25

Multilayer filter including a return signal reducing protrusion

#37
20200076516
2020-03-05

Methods and devices for real-time monitoring of tunable filters

#38
20200035395
2020-01-30

Advanced 3D inductor structures with confined magnetic field

#39
20200015877
2020-01-16

Amplitude modulated waveform circuitry for electrosurgical devices and systems, and related methods

#40
20190372545
2019-12-05

COMPACT BAND PASS FILTER WITH VIAS

#41
20190305745
2019-10-03

LC resonator and LC filter

#42
20190260345
2019-08-22

RF filtering circuitry

#43
20190260343
2019-08-22

LC FILTER

#44
20190260335
2019-08-22

Weakly coupled based harmonic rejection filter for feedback linearization power amplifier

#45
20190252951
2019-08-15

Method of controlling a converter connected to an electric machine

#46
20190229698
2019-07-25

Multilayer LC filter

#47
20190199323
2019-06-27

Band-pass filter and branching filter

#48
20190190481
2019-06-20

LC filter, radio-frequency front-end circuit, and communication device

#49
20190181826
2019-06-13

Multilayer band pass filter

#50
20190173447
2019-06-06

Multilayer LC filter

#51
20190165752
2019-05-30

Band pass filter

#52
20190158053
2019-05-23

Lumped element directional coupler having asymmetrical structure

#53
20190115900
2019-04-18

High quality factor time delay filters using multi-layer fringe capacitors

#54
20190096569
2019-03-28

Electronic component

#55
20190068166
2019-02-28

Phase shifter module, multiplexer/demultiplexer, and communication apparatus

#56
20190067772
2019-02-28

Tuneable band pass filter

#57
20190044207
2019-02-07

Filter circuits having a resonator-based filter and a magnetically-coupled filter

#58
20190013789
2019-01-10

Variable-frequency LC filter, high-frequency frontend module, and communication apparatus

#59
20180331670
2018-11-15

Compact band pass filter

#60
20180316321
2018-11-01

Weakly coupled tunable RF receiver architecture

#61
20180269846
2018-09-20

Diplexer

#62
20180262177
2018-09-13

Integrated delay modules

#63
20180254755
2018-09-06

Weakly coupled based harmonic rejection filter for feedback linearization power amplifier

#64
20180241367
2018-08-23

High-frequency front end circuit and spurious-wave suppressing method

#65
20180226952
2018-08-09

Filter circuit, multiplexer, and module

#66
20180198437
2018-07-12

Variable frequency filter and high-frequency front end circuit

#67
20180198433
2018-07-12

Frequency-variable LC filter and high-frequency front end circuit

#68
20180167047
2018-06-14

Parallel LC resonator and method therefor

#69
20180159220
2018-06-07

Antenna matching circuit, antenna circuit, front-end circuit, and communication apparatus

#70
20180138871
2018-05-17

Impedance-matching circuit

#71
20180019045
2018-01-18

Advanced 3D inductor structures with confined magnetic field

#72
20180013396
2018-01-11

Electronic component

#73
20180013395
2018-01-11

Band pass filter and laminate band pass filter

#74
20180006626
2018-01-04

Impedance matching circuit for radio-frequency amplifier

#75
20170353172
2017-12-07

Filter circuit in radio frequency power detection circuit

#76
20170338788
2017-11-23

Double-sided circuit

#77
20170331444
2017-11-16

Variable filter circuit, high frequency module circuit, and communication device

#78
20170331443
2017-11-16

Dual-band band-pass filters and method of use

#79
20170317657
2017-11-02

Time delay filters

#80
20170310296
2017-10-26

High quality factor time delay filters using multi-layer fringe capacitors

#81
20170302243
2017-10-19

Filter circuit, RF front end circuit, and communication apparatus

#82
20170272047
2017-09-21

Electronic component

#83
20170257078
2017-09-07

BAW/SAW-assisted LC filters and multiplexers

#84
20170244144
2017-08-24

Filter-termination combination for multi-band receiver

#85
20170214390
2017-07-27

Band-pass filter and branching filter

#86
20170201335
2017-07-13

Methods and devices for real-time monitoring of tunable filters

#87
20170093374
2017-03-30

Wide bandwidth muliplexer based on LC and acoustic resonator circuits for performing carrier aggregation

#88
20170093359
2017-03-30

LC parallel resonator and multilayer band pass filter

#89
20170077983
2017-03-16

Front-end circuit having a tunable filter

#90
20170070203
2017-03-09

Tunable duplexer having a circulator

#91
20170033815
2017-02-02

Reconfigurable RF filter

#92
20170033760
2017-02-02

RF filtering circuitry

#93
20170026021
2017-01-26

Tunable and integrated impedance matching and filter circuit

#94
20170012651
2017-01-12

Front-end circuit for simultaneous transmission and reception operation

#95
20170012597
2017-01-12

RF filter suppression tuning based on transmit power

#96
20170005566
2017-01-05

Common mode and differential mode filter for an inverter and inverter comprising such filter

#97
20160359511
2016-12-08

Passive voltage-gain network

#98
20160359510
2016-12-08

RX shunt switching element-based RF front-end circuit

#99
20160359470
2016-12-08

Ladder-type filter, duplexer, and module

#100
20160359466
2016-12-08

Tunable RF filter circuit

#101
20160294351
2016-10-06

Wireless communication device and filter thereof

#102
20160226463
2016-08-04

Electronic component

#103
20160218690
2016-07-28

Electronic component

#104
20160164486
2016-06-09

Transformer filter arrangement

#105
20160164481
2016-06-09

Apparatus and methods for tunable filters

#106
20160156324
2016-06-02

Electronic component

#107
20160126823
2016-05-05

Multiple-tuned filter design method for HVDC system

#108
20160020746
2016-01-21

High-frequency laminated component and laminated high-frequency filter

#109
20150318593
2015-11-05

Resonator and band pass filter

#110
20150288400
2015-10-08

Impedance matching for variable impedance antennas

#111
20150223319
2015-08-06

High frequency module

#112
20150222246
2015-08-06

Elastic wave filter with magnetically coupled LC parallel resonance circuits

#113
20150214985
2015-07-30

Tunable radio frequency (RF) front-end architecture using filter having adjustable inductance and capacitance

#114
20150214915
2015-07-30

Common mode filter

#115
20150188508
2015-07-02

Filter

#116
20150162887
2015-06-11

Output stage for adapting an AC voltage signal of an ultrasound generator

#117
20150091669
2015-04-02

Low pass filter having attenuation pole and wave splitter

#118
20150084718
2015-03-26

Multi-band impedance tuners using weakly-coupled LC resonators

#119
20150065070
2015-03-05

Weakly coupled tunable RF transmitter architecture

#120
20150061791
2015-03-05

High frequency component

#121
20150054598
2015-02-26

Filter for switched mode power supply

#122
20150038101
2015-02-05

Weakly coupled tunable RF receiver architecture

#123
20150038094
2015-02-05

VSWR detector for a tunable filter structure

#124
20150035637
2015-02-05

Advanced 3D inductor structures with confined magnetic field

#125
20150035622
2015-02-05

Interference rejection RF filters

#126
20150035617
2015-02-05

Cooperative tunable RF filters

#127
20150035612
2015-02-05

Calibration for a tunable RF filter structure

#128
20150028969
2015-01-29

High frequency component and filter component

#129
20150028965
2015-01-29

Diplexer including two bandpass filters

#130
20140364077
2014-12-11

Multi-band interference optimization

#131
20140361856
2014-12-11

High quality factor interconnect for RF circuits

#132
20140361852
2014-12-11

Tunable RF filter paths for tunable RF filter structures

#133
20140361849
2014-12-11

Tunable RF filter based RF communications system

#134
20140361848
2014-12-11

Tunable RF filter structure formed by a matrix of weakly coupled resonators

#135
20140361839
2014-12-11

Nonlinear capacitance linearization

#136
20140347146
2014-11-27

Filter

#137
20140347142
2014-11-27

Transformer with integrated notch filter

#138
20140320205
2014-10-30

Autotransformer-based impedance matching circuits and methods for radio-frequency applications

#139
20140266531
2014-09-18

Weakly coupled based harmonic rejection filter for feedback linearization power amplifier

#140
20140266459
2014-09-18

RF power amplifier with PM feedback linearization

#141
20140266458
2014-09-18

RF replicator for accurate modulated amplitude and phase measurement

#142
20140266457
2014-09-18

Gain and phase calibration for closed loop feedback linearized amplifiers

#143
20140266452
2014-09-18

RF power amplifier with total radiated power stabilization

#144
20140266451
2014-09-18

Power amplifier with wide dynamic range am feedback linearization scheme

#145
20140266432
2014-09-18

Amplifier phase distortion correction based on amplitude distortion measurement

#146
20140240061
2014-08-28

Electronic component

#147
20140210571
2014-07-31

Transformer filter arrangement

#148
20140204806
2014-07-24

Duplexer, circuit structure thereof and RF transceiver apparatus comprising the duplexer

#149
20140203890
2014-07-24

Filter circuit

#150
20140176263
2014-06-26

Filter that is variable by means of a capacitor that is switched using MEMS components

#151
20140145898
2014-05-29

High-frequency module

#152
20140145798
2014-05-29

Electronic component

#153
20140098456
2014-04-10

Electronic component

#154
20140070905
2014-03-13

Wide range continuously tunable capacitor bank

#155
20130342283
2013-12-26

Electronic component

#156
20130335159
2013-12-19

Electronic component

#157
20130314176
2013-11-28

Electronic component

#158
20130229241
2013-09-05

Multilayer band pass filter

#159
20130207745
2013-08-15

3D RF L-C FILTERS USING THROUGH GLASS VIAS

#160
20130200958
2013-08-08

Laminate-type electronic device with filter and balun

#161
20130194056
2013-08-01

Electronic component

#162
20130157587
2013-06-20

Integrated circuit comprising an integrated transformer of the “BALUN” type with several input and output channels

#163
20130154768
2013-06-20

Laminated balanced filter

#164
20130120950
2013-05-16

Band-pass filter module and module substrate

#165
20130113300
2013-05-09

Combined balun transformer and harmonic filter

#166
20130083703
2013-04-04

Tunable duplexer architecture

#167
20130076457
2013-03-28

Band pass filter

#168
20130076454
2013-03-28

Band-pass filter

#169
20130063221
2013-03-14

Arrangement for processing a non-symmetrical and a symmetrical signal

#170
20130040595
2013-02-14

Circuit for a front-end tunable filter of a communication and broadcast receiver and a tuning method thereof

#171
20130009704
2013-01-10

Transceiver and integrated circuit

#172
20120326774
2012-12-27

Switching circuit

#173
20120319801
2012-12-20

High-frequency laminated component and laminated high-frequency filter

#174
20120319800
2012-12-20

Electronic component

#175
20120314734
2012-12-13

Reconstruction filter with built-in balun

#176
20120313730
2012-12-13

Laminated bandpass filter

#177
20120256703
2012-10-11

BANDPASS FILTER AND ELECTRONIC DEVICE

#178
20120171978
2012-07-05

Methods and systems for interference rejection for low signals

#179
20120169434
2012-07-05

Filter

#180
20120139814
2012-06-07

FREQUENCY STABILIZATION CIRCUIT, ANTENNA DEVICE, AND COMMUNICATION TERMINAL DEVICE

#181
20120139658
2012-06-07

Imbalance detection and reduction for wideband balun

#182
20120127049
2012-05-24

Frequency stabilization circuit, frequency stabilization device, antenna apparatus and communication terminal equipment, and impedance conversion element

#183
20120119852
2012-05-17

Multilayer band-pass filter

#184
20120112856
2012-05-10

Laminated LC filter

#185
20120098623
2012-04-26

Multilayer filter

#186
20120098622
2012-04-26

Multilayer filter

#187
20120098620
2012-04-26

Filter and layout structure thereof

#188
20120081193
2012-04-05

Band elimination filter providing attenuation within wide range of frequencies

#189
20120049977
2012-03-01

Single-to-balanced band pass filter

#190
20120032758
2012-02-09

Electronic component

#191
20120013387
2012-01-19

Wideband balun having a single primary and multiple secondaries

#192
20110299634
2011-12-08

SAW-LESS RECEIVER WITH A FREQUENCY TRANSLATED BPF HAVING A NEGATIVE RESISTANCE

#193
20110294448
2011-12-01

Analog front end circuit for cable and wireless systems

#194
20110267166
2011-11-03

Electronic component and method for making the same

#195
20110241798
2011-10-06

RESONATOR FOR COMMUNICATION SYSTEM AND FILTER USING THE SAME

#196
20110187448
2011-08-04

Wideband analog bandpass filter

#197
20110169589
2011-07-14

Reconfigurable filter apparatus

#198
20110169586
2011-07-14

Multilayer balanced filter

#199
20110150069
2011-06-23

RF receiver

#200
20110148733
2011-06-23

Eight-shaped RF balun

#201
20110148514
2011-06-23

FREQUENCY VARIABLE COMPOSITE RESONANCE CIRCUIT

#202
20110140806
2011-06-16

Laminated balance filter

#203
20110128093
2011-06-02

Variable frequency resonator

#204
20110122258
2011-05-26

Television broadcast receiving apparatus, control method and control program for television broadcast receiving apparatus, and recording medium having the control program recorded thereon

#205
20110102105
2011-05-05

MEMS-based tunable filter

#206
20110102103
2011-05-05

Radio frequency filter

#207
20110095846
2011-04-28

Filter for switched mode power supply

#208
20110074527
2011-03-31

Layered bandpass filter

#209
20110074526
2011-03-31

Multilayer bandpass filter

#210
20110043304
2011-02-24

Left-handed resonator and left-handed filter using the same

#211
20110031583
2011-02-10

High frequency device

#212
20110006861
2011-01-13

Liquid crystalline polymer and multilayer polymer-based passive signal processing components for RF/wireless multi-band applications

#213
20110001573
2011-01-06

Frequency hopping band-stop filter

#214
20100330948
2010-12-30

Buffer circuit with integrated loss canceling

#215
20100323654
2010-12-23

High dynamic range receiver front-end with Q-enhancement

#216
20100283557
2010-11-11

Multilayer bandpass filter

#217
20100277259
2010-11-04

Serial L-C resonator with three-dimensional structure and ultra-wide bandpass filter using the same

#218
20100277255
2010-11-04

LC composite component

#219
20100244983
2010-09-30

Constant impedance filter

#220
20100237965
2010-09-23

FILTER, FILTERING METHOD, AND COMMUNICATION DEVICE

#221
20100237964
2010-09-23

HIGH FREQUENCY FILTER

#222
20100207706
2010-08-19

Left-handed filter for use in mobile phone provided with wide band and improved propagation characteristics

#223
20100198213
2010-08-05

Circuit for radiofrequency devices applicable to living tissues and device containing same

#224
20100171568
2010-07-08

Laminated band pass filter

#225
20100167676
2010-07-01

FILTERING APPARATUS AND METHOD USING REFERENCE FEEDBACK CIRCUIT OF WIRELESS COMMUNICATION SYSTEM

#226
20100167667
2010-07-01

Setting of a balun

#227
20100148886
2010-06-17

Duplexer, module including a duplexer and communication apparatus

#228
20100140742
2010-06-10

Semiconductor device and method of forming thin film capacitor

#229
20100140738
2010-06-10

Semiconductor device and method of forming compact coils for high performance filter

#230
20100123526
2010-05-20

Balanced-output triplexer

#231
20100090778
2010-04-15

Radio frequency filter

#232
20100060402
2010-03-11

Balun circuit manufactured by integrate passive device process

#233
20100060375
2010-03-11

Balun circuit manufactured by integrate passive device process

#234
20100052813
2010-03-04

Branching filter, semiconductor integrated circuit device, and communication mobile terminal

#235
20100045398
2010-02-25

Miniaturized wide-band baluns for RF applications

#236
20100039189
2010-02-18

Laminated band-pass filter having an even number of LC parallel resonators

#237
20100039185
2010-02-18

Miniaturized wide-band baluns for RF applications

#238
20100033290
2010-02-11

Miniaturized wide-band baluns for RF applications

#239
20100033289
2010-02-11

Miniaturized wide-band baluns for RF applications

#240
20100026411
2010-02-04

Balun signal transformer and method of forming

#241
20100007439
2010-01-14

Transformer with symmetric structure

#242
20100007438
2010-01-14

Band pass filter

#243
20100007437
2010-01-14

LC composite component

#244
20100007430
2010-01-14

Balanced-unbalanced conversion circuit

#245
20090323252
2009-12-31

Variable capacitor, variable capacitor apparatus, high frequency circuit filter, and high frequency circuit

#246
20090295503
2009-12-03

Variable-frequency band-elimination filter

#247
20090295501
2009-12-03

Diplexer circuit, high-frequency circuit and high-frequency module

#248
20090295496
2009-12-03

Balun

#249
20090284339
2009-11-19

Transformers, balanced-unbalanced transformers (baluns) and integrated circuits including the same

#250
20090278626
2009-11-12

Band pass filter

#251
20090231058
2009-09-17

BAND-PASS FILTER

#252
20090224849
2009-09-10

Multilayer LC composite component

#253
20090195324
2009-08-06

Balun transformer with improved harmonic suppression

#254
20090085818
2009-04-02

Digitally tuned, integrated RF filters with enhanced linearity for multi-band radio applications

#255
20090079516
2009-03-26

Passband filter

#256
20090051459
2009-02-26

FILTER

#257
20090021326
2009-01-22

Electric part including a dielectric portion and a magnetic portion

#258
20090009267
2009-01-08

Electronic component including a magnetic layer and a dielectric layer

#259
20080303610
2008-12-11

TUNED FILTERS WITH ENHANCED HIGH FREQUENCY RESPONSE

#260
20080303606
2008-12-11

Miniaturized wide-band baluns for RF applications

#261
20080278258
2008-11-13

INTEGRATED CIRCUIT HAVING RE-CONFIGURABLE BALUN CIRCUIT AND METHOD THEREFOR

#262
20080266029
2008-10-30

VARIABLE FILTER ELEMENT, VARIABLE FILTER MODULE AND FABRICATION METHOD THEREOF

#263
20080258837
2008-10-23

BALUN SIGNAL TRANSFORMER

#264
20080252395
2008-10-16

Compact coils for high performance filters

#265
20080224791
2008-09-18

Integrated balanced-unbalanced duplexer

#266
20080195180
2008-08-14

Low loss band pass filter for RF distance telemetry pin antennas of active implantable medical devices

#267
20080174388
2008-07-24

Compact power-agile filter, particularly for radiocommunication system amplification module

#268
20080174378
2008-07-24

Method of adjusting the resonance frequency of an L-C resonant circuit and resonant circuit

#269
20080169877
2008-07-17

Amplifier for use in radio-frequency band

#270
20080150606
2008-06-26

Clock supplying apparatus

#271
20080094304
2008-04-24

Active antenna capable of wireless signal transmission and reception and mobile communication terminal having the same

#272
20080094152
2008-04-24

Modifiable Electrical Component, And Method For Modifying The Component

#273
20080048801
2008-02-28

Coupling filter device with specific coupling coefficient

#274
20070296525
2007-12-27

Band-pass filter circuit

#275
20070285187
2007-12-13

Semiconductor device interconnecting unit, semiconductor device and high-frequency module having a millimeter wave band

#276
20070241839
2007-10-18

High frequency multilayer bandpass filter

#277
20070240298
2007-10-18

Method of generating a layout for a differential circuit

#278
20070194345
2007-08-23

Thin-film device

#279
20070187804
2007-08-16

Monolithic integrated circuit

#280
20070146098
2007-06-28

Compact printed filters with self-connected LC resonators

#281
20070133182
2007-06-14

Multi-layered printed circuit board embedded with filter

#282
20070123949
2007-05-31

LOW LOSS BAND PASS FILTER FOR RF DISTANCE TELEMETRY PIN ANTENNAS OF ACTIVE IMPLANTABLE MEDICAL DEVICES

#283
20070085108
2007-04-19

Liquid crystalline polymer and multilayer polymer-based passive signal processing components for RF/wireless multi-band applications

#284
20070054647
2007-03-08

Circuit and method for filtering a radio frequency signal

#285
20070013462
2007-01-18

Dual-band bandpass filter

#286
20060284705
2006-12-21

Bandpass filter having first and second serially coupled collection of filter components for providing upper and lower rejection notches

#287
20060279380
2006-12-14

Second order bandpass filter

#288
20060178114
2006-08-10

Tunable radio frequency filter

#289
20060132257
2006-06-22

EMI filter and frequency filters having capacitor with inductance cancellation loop

#290
20060028301
2006-02-09

Discrete inductor bank and LC filter

#291
20060017388
2006-01-26

Radio frequency power generator

#292
20050264376
2005-12-01

Methods and apparatus for an improved discrete LC filter

#293
20050250467
2005-11-10

Unconditionally stable filter

#294
20050248418
2005-11-10

Multi-band RF transceiver with passive reuse in organic substrates

#295
20050237131
2005-10-27

Filter using multilayer ceramic technology and structure thereof

#296
20050195061
2005-09-08

Inductor layout using step symmetry for inductors

#297
20050190013
2005-09-01

Frequency discrete LC filter bank

#298
20050184829
2005-08-25

LC composite component

#299
20050168298
2005-08-04

Electromagnetic interface module for balanced data communication

#300
20050153656
2005-07-14

Temperature compensated variable tilt equalizer