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公开(公告)号:US3417351A
公开(公告)日:1968-12-17
申请号:US40673964
申请日:1964-10-27
Applicant: BELL TELEPHONE LABOR INC
Inventor: DI PIAZZA GERALD C
IPC: H01P1/201
CPC classification number: H01P1/201
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公开(公告)号:US3345589A
公开(公告)日:1967-10-03
申请号:US24685962
申请日:1962-12-14
Applicant: BELL TELEPHONE LABOR INC
Inventor: DI PIAZZA GERALD C
IPC: H01P1/201
CPC classification number: H01P1/201
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公开(公告)号:US2199221A
公开(公告)日:1940-04-30
申请号:US22590138
申请日:1938-08-20
Applicant: BELL TELEPHONE LABOR INC
Inventor: WILLIAM GILMAN GEORGE
IPC: H01P1/201
CPC classification number: H01P1/201
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公开(公告)号:US20240213640A1
公开(公告)日:2024-06-27
申请号:US18555863
申请日:2021-12-17
Applicant: KYOCERA CORPORATION
Inventor: Hiromichi YOSHIKAWA
Abstract: A composite resonator includes a first resonator extending in a first plane direction, a second resonator spaced apart from the first resonator in a first direction and extending in the first plane direction, a third resonator located between the first resonator and the second resonator in the first direction and configured to be magnetically or capacitively connected to or electrically connected to each of the first resonator and the second resonator, and a reference conductor extending in the first plane direction, located between the first resonator and the second resonator in the first direction and serving as a potential reference of the first resonator and the second resonator.
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公开(公告)号:US11990661B2
公开(公告)日:2024-05-21
申请号:US17360679
申请日:2021-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Bengui Yuan , Puke Zhou , Jinyan Li
CPC classification number: H01P1/2086 , H01P1/2002 , H01P1/201 , H01P1/2084 , H01P7/10 , H01P11/007
Abstract: The present disclosure relates to transverse magnetic wave (TM) mode filters and methods for manufacturing a TM mode filter. One example TM mode filter includes a filter body, a dielectric, and a transition layer, the filter body including a filter cavity and a cover, and having hollow confined space, the dielectric located in the hollow confined space, and the transition layer configured to connect the dielectric and the filter body. A coefficient of thermal expansion (CTE) of the transition layer is between a CTE of the filter body and a CTE of the dielectric.
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公开(公告)号:US20180277919A1
公开(公告)日:2018-09-27
申请号:US15764506
申请日:2015-11-03
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor: Anatoli DELENIV , Piotr KOZAKOWSKI , Ove PERSSON
CPC classification number: H01P5/082 , H01P1/201 , H01P1/2016 , H01P3/123 , H01P11/002
Abstract: A waveguide transition includes a ridge waveguide section with a first ridge part running along a first wall having a first distance to an opposing second wall. The waveguide transition comprises a partial H-plane waveguide section with an electrically conducting foil that comprises a longitudinally running foil slot ending a certain edge distance before a foil edge that faces the ridge waveguide section. The ridge waveguide section and the partial H-plane waveguide section overlap during a transition section that has a first end at a transition between the second wall and a third wall. There is a second distance between the first wall and the third wall that exceeds the first distance. The transition section has a second end where the first ridge part ends by a transversely running second ridge part that crosses the foil slot and connects to a third wall.
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公开(公告)号:US20180151932A1
公开(公告)日:2018-05-31
申请号:US15361908
申请日:2016-11-28
Applicant: Nokia Solutions and Networks Oy
Inventor: David R. Hendry
CPC classification number: H01P1/201 , H01P1/2002 , H01P1/202 , H01P1/2082 , H01P1/2086 , H01P7/06 , H01P7/105
Abstract: An RF filter includes: an electrical conductor defining an outer sphere; a dielectric material defining an inner sphere disposed within the conductor outer sphere; and at least a first electrical probe and a second electrical probe. Each probe extends through the conductor and is electrically insulated from it. A spherical shape of one or both of the inner and outer spheres is interrupted by: a) a first localized discontinuity in said spherical shape disposed along a first axis passing through a geometric center of the one or both of the inner and outer spheres; and b) a second localized discontinuity in said sphere form disposed along a second axis passing through the geometric center, the second axis perpendicular to the first axis. There can be more than these two discontinuities, implemented as chamfers, tuning screws, and the like. Series and parallel coupling of the spheres is detailed.
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公开(公告)号:US20180108963A1
公开(公告)日:2018-04-19
申请号:US15462000
申请日:2017-03-17
Inventor: Seong Mo MOON , In Bok YOM , Moon-Que LEE
Abstract: Provided is a microwave filter system having a feedback structure. The microwave filter system may include an input hybrid coupler configured to output first output signals having a phase difference with respect to an input signal; filters disposed to be in parallel with an output end of the input hybrid coupler, and configured to filter the first output signals; and an output hybrid coupler configured to output second output signals having a phase difference with respect to each of signals filtered through the filters. An output signal of the output hybrid coupler is applied to an input end of the input hybrid coupler along a feedback path.
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公开(公告)号:US20170162925A1
公开(公告)日:2017-06-08
申请号:US14962855
申请日:2015-12-08
Applicant: HUAWEI TECHNOLOGIES CANADA CO., LTD.
Inventor: Raafat R. Mansour , Kevin Yang , Vahid Miraftab
Abstract: The tunable bandpass filter is used for filtering an electromagnetic signal, has a system passband between a first and a second tunable cutoff frequencies, and has a first subfilter and a second subfilter connected to one another in series between an input port and an output port and being complementary to one another in the tunable bandpass filter. At least one of the first subfilter and the second subfilter being connected to operate in reflection.
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公开(公告)号:US09673499B2
公开(公告)日:2017-06-06
申请号:US14838926
申请日:2015-08-28
Inventor: Hussein Nasser Shaman , Abdulrahman Saad Alarifi
CPC classification number: H01P1/203 , H01P1/201 , H01P1/2016 , H01P1/20381 , H01P1/2039 , H01P3/08 , H01P3/081
Abstract: A notch filter includes a dielectric substrate; and a microstrip transmission line provided on the dielectric substrate and having an arrow-shaped embedded open-circuited stub.
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