ClassID:

213997

H01P1/2138 - CPC Classification

Classification description:

Auxiliary devices; Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters

Recent Application in this class:
#1
20260039000
2026-02-05

FILTER FOR COMMUNICATION DEVICE

#2
20260011900
2026-01-08

WIDEBAND TEM TO TM01 MODE CONVERTER FOR MICROWAVE PLASMA SYSTEMS

#3
20250357652
2025-11-20

MODULAR MICROWAVE TRANSMISSION SYSTEM WITH AUTOMATIC CONFIGURATION

#4
20250158261
2025-05-15

Multi-Layer Filter Arrangement

#5
20240297429
2024-09-05

Modular diplexer subsystem comprising an RF module and a diplexer module coupled to each other, where the diplexer module is reversible

#6
20240250398
2024-07-25

Printed circuit board configured for waveguide coupling a diplexer mounted a first surface to a transmitter and a receiver which are directly mounted on a second surface

#7
20240213642
2024-06-27

APPARATUS AND SYSTEM FOR SPLITTING AND COMBINING SIGNALS IN THE FREQUENCY DOMAIN

#8
20240178538
2024-05-30

HYBRID TYPE FILTER SOLUTION

#9
20240055743
2024-02-15

Highly-Integrated Antenna Feed Assembly

#10
20240030575
2024-01-25

FRONT-END MODULE COMPRISING FRONT-END COMPONENTS AND A SUBSTRATE INTEGRATED WAVEGUIDE FILTER FORMED ON A PRINTED CIRCUIT BOARD

#11
20230327313
2023-10-12

DIELECTRIC FILTER, AND AU, RU OR BS HAVING THE SAME

#12
20230223962
2023-07-13

RF MULTIPLEXER OF 5G MMWAVE LOW-LOSS BROADBAND WIRELESS HYBRID TYPE USING WAVEGUIDE CAVITY KA-BAND

#13
20230045912
2023-02-16

Cavity filter and connecting structure included therein

#14
20220336939
2022-10-20

Modular diplexer subsystem comprising an RF module and a diplexer module coupled to each other, where each module is removable and replaceable

#15
20220285814
2022-09-08

Waveguide cross-coupling filter with multiple parallel cavities

#16
20220149500
2022-05-12

Microelectronic assemblies with substrate integrated waveguide

#17
20220132655
2022-04-28

Printed circuit board with first and second surfaces configured for waveguide coupling a diplexer mounted on the first surface to a transmitter and a receiver mounted on the second surface

#18
20220086966
2022-03-17

Single-input to N-output microwave system including multiple band-pass filters and multiple accelerators configured for selective irradiation at different angles

#19
20220021097
2022-01-20

Active waveguide transition having a probe and RF amplifier system and which is usable in a transmit/receive communication system

#20
20210399395
2021-12-23

Radio unit for unsynchronized TDD multi-band operation

#21
20210320391
2021-10-14

High-q triple-mode cavity dielectric resonant hollow structure and filter with resonant structure

#22
20210242587
2021-08-05

Apparatus comprising an inner waveguide and a coaxial waveguide configured to be fed with first and second frequency signals through a tunable coaxial turnstile junction

#23
20210184760
2021-06-17

MULTI-MODE COMMUNICATION SYSTEM WITH SATELLITE SUPPORT MECHANISM AND METHOD OF OPERATION THEREOF

#24
20210159581
2021-05-27

Tuning elements with reduced metal debris formation for resonant cavity filters

#25
20210127489
2021-04-29

Front-end module comprising front-end components and a substrate integrated waveguide filter formed on a printed circuit board

#26
20210098851
2021-04-01

Cavity filter and connecting structure included therein

#27
20210066774
2021-03-04

DIELECTRIC TM01 MODE RESONATOR

#28
20210066773
2021-03-04

Bandpass filter

#29
20210043994
2021-02-11

Microwave resonator, a microwave filter and a microwave multiplexer

#30
20210036391
2021-02-04

Tunable diplexer junction

#31
20200352622
2020-11-12

Isolation device for electrosurgical apparatus

#32
20200274247
2020-08-27

Dual-polarization rippled reflector antenna

#33
20200266548
2020-08-20

Electronics and filter-integrated, dual-polarized transition and radiator for phased array sensors

#34
20200083581
2020-03-12

RF dielectric waveguide duplexer filter module

#35
20200076043
2020-03-05

High-Q dispersion-compensated parallel-plate diplexer

#36
20200076033
2020-03-05

Filter assemblies, tuning elements and method of tuning a filter

#37
20190252750
2019-08-15

Radio frequency filter having cavity structure

#38
20190097293
2019-03-28

Electromagnetic wave launcher including an electromagnetic waveguide, wherein a millimeter wave signal and a lower frequency signal are respectively launched at different portions of the waveguide

#39
20190089063
2019-03-21

Apparatus and methods for communicating utilizing an antenna array

#40
20190067776
2019-02-28

Chip-to-chip interface comprising a waveguide with a dielectric part and a conductive part, where the dielectric part transmits signals in a first frequency band and the conductive part transmits signals in a second frequency band

#41
20190067773
2019-02-28

RF dielectric waveguide duplexer filter module

#42
20190044223
2019-02-07

Waveguide aperture design for geo satellites

#43
20190036192
2019-01-31

Band-pass filter device and method for signal transmission

#44
20180375214
2018-12-27

Dual-polarization rippled reflector antenna

#45
20180331406
2018-11-15

Filter assemblies, tuning elements and method of tuning a filter

#46
20180248242
2018-08-30

METALIZED MOLDED PLASTIC COMPONENTS FOR MILLIMETER WAVE ELECTRONICS AND METHOD FOR MANUFACTURE

#47
20180198182
2018-07-12

Band pass filter comprising sets of first and second dielectric resonators disposed within a housing, where the first and second dielectric resonators have an adjustable interval there between

#48
20180034125
2018-02-01

Waveguide E-plane filter

#49
20170310005
2017-10-26

RADIO FREQUENCY UNIT

#50
20170141446
2017-05-18

Filter assemblies, tuning elements and method of tuning a filter

#51
20170093008
2017-03-30

Coaxial diplexer and signal coupling device

#52
20170085003
2017-03-23

Apparatus and methods for communicating utilizing an antenna array

#53
20160322687
2016-11-03

Multiplex filter with dielectric substrate for the transmission of TM modes in the transverse direction

#54
20160308264
2016-10-20

RF dielectric waveguide duplexer filter module

#55
20160301378
2016-10-13

Duplexer and communications system having duplexer

#56
20160218436
2016-07-28

Low-cost diplexed multiple beam integrated antenna system for LEO satellite constellation

#57
20160156373
2016-06-02

Millimeter wave dual-mode diplexer and method

#58
20160149283
2016-05-26

Two-transmitter two-receiver antenna coupling unit for microwave digital radios

#59
20160118706
2016-04-28

Method for performing frequency band splitting

#60
20160056540
2016-02-25

Modular design of a high power, low passive intermodulation, active universal distributed antenna system interface tray

#61
20160043457
2016-02-11

Waveguide E-plane filter structure

#62
20150295294
2015-10-15

RF duplexer filter module with waveguide filter assembly

#63
20150077196
2015-03-19

Dielectric waveguide input/output structure and dielectric waveguide duplexer using the same

#64
20150077195
2015-03-19

Ultra-broadband diplexer using waveguide and planar transmission lines

#65
20140309979
2014-10-16

System and method for generating an electromagnetic field model

#66
20140240058
2014-08-28

Laminated waveguide diplexer

#67
20140184355
2014-07-03

Laminated waveguide diplexer with shielded signal-coupling structure

#68
20140176256
2014-06-26

Base station RF duplexer, RF module, and RF system

#69
20140070904
2014-03-13

Metalized molded plastic components for millimeter wave electronics and method for manufacture

#70
20140049342
2014-02-20

Waveguide E-plane filter structure with controllable size

#71
20130271237
2013-10-17

Diplexer for homodyne FMCW-radar device

#72
20130083703
2013-04-04

Tunable duplexer architecture

#73
20130038407
2013-02-14

Waveguide E-plane filter structure

#74
20120299668
2012-11-29

Cavity filter having surge suppress means

#75
20120299667
2012-11-29

Cavity filter having feedback arrangement

#76
20120242425
2012-09-27

Lightweight cavity filter structure

#77
20120169414
2012-07-05

Metamaterial power amplifier systems

#78
20120161867
2012-06-28

Metamaterial power amplifier systems

#79
20120105171
2012-05-03

Cross polarization multiplexer formed in a monoblock body

#80
20120063471
2012-03-15

Public cavity input multiplexer

#81
20120049983
2012-03-01

DIPLEXER, AND RESONATOR FILTERS COMBINED WITH DUAL MODE AND TRIPLE-MODE RESONATORS

#82
20110254641
2011-10-20

Multi-band filter including a plurality of parallel filters each configured to provide a particular effective path length

#83
20110254640
2011-10-20

Diplexer for a reflector antenna

#84
20110243562
2011-10-06

Method and apparatus for integrated waveguide transmit-receive isolation, filtering, and circular polarization

#85
20110243043
2011-10-06

Method and apparatus for integrated waveguide transmit-receive isolation and filtering

#86
20110187477
2011-08-04

APPARATUS FOR FILTERING AN INPUT SIGNAL

#87
20110058809
2011-03-10

Thermally optimized microwave channel multiplexing device and signals repetition device comprising at least one such multiplexing device

#88
20100283553
2010-11-11

Tri-frequency duplexer circuit and multi-frequency duplexer circuit

#89
20100207705
2010-08-19

BASE STATION RF DUPLEXER, RF MODULE, AND RF SYSTEM

#90
20100207703
2010-08-19

Metamaterial power amplifier systems

#91
20100156558
2010-06-24

Microwave pulse compressor using switched oversized waveguide resonator

#92
20100156555
2010-06-24

Frequency agile variable bandwidth radio frequency cavity resonator

#93
20100102899
2010-04-29

Waveguide antenna front end

#94
20100039186
2010-02-18

Waveguide multiplexer and waveguide phase shifter connected by a polarization adjustment assembly

#95
20090284325
2009-11-19

Phased-array antenna filter and diplexer for a super economical broadcast system

#96
20080315969
2008-12-25

Waveguide correlation unit and a method for its manufacturing

#97
20080174385
2008-07-24

Filter combiner

#98
20070290768
2007-12-20

Ridge-waveguide filter and filter bank

#99
20070252661
2007-11-01

Manifold combiner for multi-station broadcast sites apparatus and method

#100
20070188263
2007-08-16

Enhanced microwave multiplexing network

#101
20070139135
2007-06-21

Waveguide diplexer

#102
20070066246
2007-03-22

Transceiver assembly

#103
20060186969
2006-08-24

Low-loss filter and frequency multiplexer

#104
20060185161
2006-08-24

Method of fabrication of low-loss filter and frequency multiplexer

#105
20060139127
2006-06-29

Multimode dielectric resonator device, dielectric filter, composite dielectric filter and communication apparatus

#106
20060114082
2006-06-01

Generalized multiplexing network

#107
20060098693
2006-05-11

Busbar arrangement for coupling waveguide filters in output multiplexers

#108
20060028296
2006-02-09

Waveguide diplexer of electric plane T-junction structure with resonant iris

#109
20050270120
2005-12-08

Dielectric resonator filter and multiplexer

#110
20050253672
2005-11-17

High-frequency circuit device and high-frequency circuit module

#111
20050231301
2005-10-20

Waveguide directional filter

#112
20050104686
2005-05-19

High frequency module and antenna device

#113
20050093647
2005-05-05

Twinned pseudo-elliptic directional filter method and apparatus

#114
18413834
2024-12-10

Method for servicing a duplexer having a radio frequency assembly

#115
18228315
2024-02-27

Duplexer radio frequency assembly

#116
16891637
2022-01-25

Duo-quad wideband waveguide combiner/mode-converter transforming two rectangular waveguides in the TErectangular mode to a single circular waveguide output in the TEmode