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公开(公告)号：US11063335B2
公开(公告)日：2021-07-13
申请号：US16468893
申请日：2017-12-08
发明人： Efstratios Doumanis , Senad Bulja
摘要： A resonator assembly and method are disclosed. The resonator assembly comprises: a resonant chamber defined by a first wall, a second wall opposing the first wall and side walls extending between the first wall and the second wall; a first resonator comprising a first resonator element and a first resonator cap, the first resonator element having a first grounded end and an first open end, the first resonator element being grounded at the first grounded end on the first wall and extending into the resonant chamber, the first resonator cap having a first grounded portion and an first open portion, the first resonator cap being grounded at the first grounded portion on the second wall and extending into the resonant chamber to at least partially surround the first open end of the first resonator element with the first open portion for electrical field loading of the first resonator element by the first resonator cap; and a second resonator comprising a second resonator element and a second resonator cap located for electrical field loading of the second resonator element by the second resonator cap, the second resonator element being located for magnetic field coupling between the first resonator element and the second resonator element. In this way, a compact resonator assembly is provided having high operational performance. The provision of resonators having resonator elements and resonator caps helps to reduce the height of the resonator assembly to around one eighth of the operating wavelength. The provision of the resonator caps helps to contain the electrical field from the resonator elements, which enables adjacent resonator elements to be located closer together to provide for enhanced magnetic field coupling therebetween.
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公开(公告)号：US10957958B2
公开(公告)日：2021-03-23
申请号：US16223359
申请日：2018-12-18
发明人： Masayuki Kikuda , Hitoshi Tada
摘要： A dielectric resonator includes a dielectric block, an external conductor, and wall-surface conductors. The dielectric block has a rectangular parallelepiped shape including a first surface and a second surface opposed to each other. The dielectric block includes a through hole extending from the first surface to the second surface. The external conductor is disposed on an outer surface of the dielectric block. The wall-surface conductors are disposed on a wall surface defining the through hole. The wall-surface conductor includes a first portion of the through hole adjacent to the first surface and a second portion of the through hole adjacent to the second surface. The first and second portions of the wall-surface conductors are separated by a separation distance.
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公开(公告)号：US10886585B2
公开(公告)日：2021-01-05
申请号：US16136956
申请日：2018-09-20
摘要： An architecture for, and techniques for fabricating, a cryogenic microwave filter having reduced Kapitza resistance are provided. In some embodiments, the cryogenic microwave filter can comprise a substrate and a conductive line. The substrate can be formed of a material having a thermal conductivity property that sufficiently reduces Kapitza resistance in the cryogenic environment. The conductive line can be formed in a recess of the substrate and facilitate a filter operation on a microwave signal propagated in a cryogenic environment. In some embodiments, the conductive line can be formed according to a sintering technique that can reduce Kapitza resistance.
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公开(公告)号：US10693205B2
公开(公告)日：2020-06-23
申请号：US15513651
申请日：2015-09-16
申请人： KYOCERA Corporation
摘要： A resonator includes a shield conductor, a columnar body, and a first dielectric body. The shield conductor includes a first conductor located on a negative z-direction side and a second conductor located on a positive z-direction side, and has a cavity therein. The columnar body has a columnar shape, and is placed inside the cavity, an end in the negative z-direction thereof being joined to the first conductor, an interval being provided between an end in the positive z-direction of the columnar body and the shield conductor. The first dielectric body is placed inside the cavity, an end in the positive z-direction thereof being joined to the second conductor, an interval being provided between an end in the negative z-direction of the first dielectric body and the shield conductor, the first dielectric body surrounding the columnar body so as to be apart from each other.
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公开(公告)号：US10601101B2
公开(公告)日：2020-03-24
申请号：US16164829
申请日：2018-10-19
申请人： KMW INC.
发明人： Nam-Shin Park
摘要： A resonator includes a housing having a cavity therein; a plurality of resonance plates which are arranged radially around a center of the cavity with a predetermined interval therebetween; and a plurality of legs each of which supports one of the plurality of resonance plates, respectively. A center of each of the plurality of legs is deviated from a center of a corresponding resonance plate.
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公开(公告)号：US10587024B2
公开(公告)日：2020-03-10
申请号：US15786311
申请日：2017-10-17
申请人： LGS INNOVATIONS LLC
发明人： Alan Scott Brannon
摘要： The present application is directed to an enclosure for hermetically sealing ceramic filters. The enclosure includes a container body with a hollow cavity for receiving electronic components. A container lid is hermetically sealed to the body to maintain a controlled environment. A connector allows for communicating between the electronic components received within the enclosure and other electronic components located outside the enclosure. The enclosure also includes a filter having a block of dielectric material with a top surface including a patterned region, a bottom surface, and side surfaces. A through-hole extends through the block from the top surface to the bottom surface. The through-hole is partially surrounded by the patterned region. A wall extends from the top surface, and has an inner surface, an outer surface, and a roof. The application is also directed to a system including a printed circuit board and a filter provided in the enclosure.
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公开(公告)号：US10484039B2
公开(公告)日：2019-11-19
申请号：US16199619
申请日：2018-11-26
摘要： A duplexer includes a 90° hybrid connected to an antenna terminal, a 90° hybrid connected to a terminating resistor, a transmission-side filter connected to the 90° hybrid connected to the antenna terminal, and notch filters connected to both of the 90° hybrids and mutually having the same filter characteristics, where each of the notch filters is a band elimination filter configured to reflect a radio frequency signal of a transmission band and allow a radio frequency signal of a band other than the transmission band to pass through.
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公开(公告)号：US10403957B2
公开(公告)日：2019-09-03
申请号：US15629905
申请日：2017-06-22
发明人： Kwo-Jyr Wong
摘要： A cavity filter includes a housing, the housing includes resonant cavity groups, each of the resonant cavity groups has two resonant cavities, a partitioning portions is provided between the two resonant cavities, and the partitioning portions is provided with an adjustment passage running through the two resonant cavities. A cover plate is mounted on the housing to cover the resonant cavity groups. A resonating assembly includes a resonant tube, a resonant cap connected with the resonant tube, and a resonant adjustment screw provided in the resonant tube. The resonant tube is disposed on the inner wall of the resonant cavities. The resonant cap is opposite the cover plate. A coupling adjustment assembly is used for reducing the magnetic coupling amount between the two resonant cavities and enhancing the electrical coupling amount between the two resonant cavities.
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公开(公告)号：US10403949B2
公开(公告)日：2019-09-03
申请号：US16053303
申请日：2018-08-02
申请人： SPINNER GmbH
发明人： Martin Grassl , Günther Kaiser
摘要： A PIM test bench including a first duplexer, having a first port connected via a first filter to a third port and a second port connected via a second filter to the third port. The first port is fed by signal sources providing RF signals at first and second frequencies. A spectrum analyzer is connected to the second port. A device under test is connected between said third port and a third port of a second duplexer. Each of the first and second ports of the second duplexer is connected to a PIM optimized load and/or a standard load. The second duplexer is preferably identical to the first duplexer. For minimizing self-intermodulation, at least the first duplexer comprises at least one filter component and a metal housing. The housing further includes a monolithic metal body and a metal cover capacitively coupled to the body without any galvanic contact.
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公开(公告)号：US10381701B2
公开(公告)日：2019-08-13
申请号：US15564785
申请日：2016-04-08
申请人： NEC CORPORATION
发明人： Keiichi Motoi
摘要： A first switch is configured to open and close connection between an end part of a first transmission line and ground, and a second switch is configured to open and close connection between an end part of a third transmission line and ground.
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