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    DIELECTRIC RESONATOR FILTER
    1.
    发明申请
    DIELECTRIC RESONATOR FILTER 审中-公开
    电介质谐振滤波器

    公开(公告)号：WO9527317A3

    公开(公告)日：1995-11-23

    申请号：PCT/CA9500177

    申请日：1995-03-30

    Applicant: COM DEV LTD

    Inventor： CAMERON RICHARD J ,  TANG WAI-CHEUNG ,  DOKAS VAN

    IPC: H01P1/208

    CPC classification number: H01P1/2084

    Abstract: The invention relates to a single mode multi-cavity microwave filter that includes a housing formed with a plurality of walls which define at least two rows of side-by-side dielectric loaded cavities, wherein sequential cavities are coupled to one another via slots or probes in the walls therebetween and at least one pair of non-sequential adjacent cavities are coupled via a slot or probe. The coupling via the slots is defined mathematically as positive coupling. The probe is selectively configurable to provide positive or negative coupling relative to the sign of the slot coupling. Further, at least one non-adjacent, non-sequential pair of cavities is coupled via a second probe that may be configured to provide either positive or negative coupling relative to the sign of the slot coupling. The filter housing supports a plurality of adjustable fins which extend into the slots, one fin to each slot, to selectively adjust the size of the slot.

    5.
    发明专利
    未知

    公开(公告)号：DE69432070D1

    公开(公告)日：2003-03-06

    申请号：DE69432070

    申请日：1994-12-02

    Applicant: COM DEV LTD

    Inventor： MANSOUR RAAFAT R ,  DOKAS VAN

    IPC: H01P1/208

    Abstract: An improved design for microwave bandpass cavity filters wherein dielectric resonator elements are mounted in dielectric blocks (there can be more than one resonator element per dielectric block). The dielectric blocks are in turn fitted within the filter housing, and the open ends are covered by shorting plates which are maintained in contact with each resonator surface. The shorting plates may be coated with a superconductive material. The structure results in significant size reduction over prior art filters. In addition, the new design is of higher structural integrity and helps to maintain a consistent output over a wide range of temperatures. By carefully choosing the dielectric materials to insure uniform thermal expansion of the component parts, the filter output is stable over a wide range of temperatures. This allows the filters to be tuned while at cryogenic temperatures, then returned to room temperature for storage or shipping, and finally return to cryogenic temperatures for operating purposes. The filters can be constructed with various configurations and can be operated in single mode, dual-mode, triple-mode, etc.

    MINIATURIZED SUPERCONDUCTING DIELECTRIC RESONATOR FILTERS AND METHOD OF OPERATION THEREOF
    6.
    发明专利
    MINIATURIZED SUPERCONDUCTING DIELECTRIC RESONATOR FILTERS AND METHOD OF OPERATION THEREOF 未知

    公开(公告)号：CA2136894C

    公开(公告)日：1997-05-20

    申请号：CA2136894

    申请日：1994-11-29

    Applicant: COM DEV LTD

    Inventor： MANSOUR RAAFAT R ,  DOKAS VAN

    IPC: H01P1/208 ,  H01P1/20

    Abstract: An improved design for microwave bandpass cavity filters wherein dielectric resonator elements are mounted in dielectric blocks (there can be more than one resonator element per dielectric block). The dielectric blocks are in turn fitted within the filter housing, and the open ends are covered by shorting plates which are maintained in contact with each resonator surface. The shorting plates may be coated with a superconductive material. The structure results in significant size reduction over prior art filters. In addition, the new design is of higher structural integrity and helps to maintain a consistent output over a wide range of temperatures. By carefully choosing the dielectric materials to insure uniform thermal expansion of the component parts, the filter output is stable over a wide range of temperatures. This allows the filters to be tuned while at cryogenic temperatures, then returned to room temperature for storage or shipping, and finally return to cryogenic temperatures for operating purposes. The filters can be constructed with various configurations and can be operated in single mode, dual-mode, triple-mode, etc.

    A FOLDED SINGLE MODE DIELECTRIC RESONATOR FILTER WITH COUPLINGS BETWEEN ADJACENT RESONATORS AND CROSS DIAGONAL COUPLINGS BETWEEN NON-SEQUENTIAL CONTIGUOUS RESONATORS
    8.
    发明专利
    A FOLDED SINGLE MODE DIELECTRIC RESONATOR FILTER WITH COUPLINGS BETWEEN ADJACENT RESONATORS AND CROSS DIAGONAL COUPLINGS BETWEEN NON-SEQUENTIAL CONTIGUOUS RESONATORS 未知

    公开(公告)号：CA2186948C

    公开(公告)日：1998-12-15

    申请号：CA2186948

    申请日：1995-03-30

    Applicant: COM DEV LTD

    Inventor： CAMERON RICHARD J ,  TANG WAI-CHEUNG ,  DOKAS VAN

    IPC: H01P1/208

    Abstract: The invention relates to a single mode multi-cavity microwave filter that includes a housing formed with a plurality of walls which define at least two rows of side-by-side dielectric loaded cavities, wherein sequential cavities are coupled to one another via slots or probes in the walls therebetween and at least one pair of non-sequential adjacent cavities are coupled via a slot or probe. The coupling via the slots is defined mathematically as positive coupling. The probe is selectively configurable to provide positive or negative coupling relative to the sign of the slot coupling. Further, at least one nonadjacent, non-sequential pair of cavities is coupled via a second probe that may be configured to provide either positive or negative coupling relative to the sign of the slot coupling. The filter housing supports a plurality of adjustable fins which extend into the slots, one fin to each slot, to selectively adjust the size of the slot.

    10.
    发明专利
    未知

    公开(公告)号：DE69432070T2

    公开(公告)日：2003-11-20

    申请号：DE69432070

    申请日：1994-12-02

    Applicant: COM DEV LTD

    Inventor： MANSOUR RAAFAT R ,  DOKAS VAN

    IPC: H01P1/208

    Abstract: An improved design for microwave bandpass cavity filters wherein dielectric resonator elements are mounted in dielectric blocks (there can be more than one resonator element per dielectric block). The dielectric blocks are in turn fitted within the filter housing, and the open ends are covered by shorting plates which are maintained in contact with each resonator surface. The shorting plates may be coated with a superconductive material. The structure results in significant size reduction over prior art filters. In addition, the new design is of higher structural integrity and helps to maintain a consistent output over a wide range of temperatures. By carefully choosing the dielectric materials to insure uniform thermal expansion of the component parts, the filter output is stable over a wide range of temperatures. This allows the filters to be tuned while at cryogenic temperatures, then returned to room temperature for storage or shipping, and finally return to cryogenic temperatures for operating purposes. The filters can be constructed with various configurations and can be operated in single mode, dual-mode, triple-mode, etc.

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