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    In-band-flat-group-delay type dielectric filter and linearized amplifier using the same
    31.
    发明公开
    In-band-flat-group-delay type dielectric filter and linearized amplifier using the same 审中-公开
    Dielektrisches过滤器mit acher acher acher it it it it it it it it it it it it it it it it it it

    公开(公告)号：EP1071156A3

    公开(公告)日：2003-01-29

    申请号：EP00306195.9

    申请日：2000-07-20

    Applicant: Matsushita Electric Industrial Co., Ltd.

    Inventor： Yamakawa, Takehiko ,  Yamada, Toru ,  Ishizaki, Toshio ,  Tachibana, Minoru ,  Nakamura, Toshiaki ,  Nakamatsu, Hiroyuki

    IPC: H01P1/205

    CPC classification number: H01P1/2053

    Abstract: A small in-band-flat-group-delay type dielectric filter having low-loss characteristics with a small amplitude deviation and uniform-group-delay frequency characteristics is obtained, which enables broad-band characteristics to be obtained easily. The in-band-flat-group-delay type dielectric filter includes a plurality of dielectric coaxial resonators 14, 15, a coupling circuit comprising a combination of reactive elements, with which the dielectric coaxial resonators 14, 15 are coupled to one another, and input/output terminals 11 connected to ends of the coupling circuit. The dielectric coaxial resonators 14 coupled to the input/output terminals 11 are allowed to have a different characteristic impedance from that of the interstage dielectric coaxial resonators 15.

    Abstract translation: 获得具有小振幅偏差和均匀群延迟频率特性的低损耗特性的小带内平面延迟型介质滤波器，这使得能够容易地获得宽带特性。 带内平坦组延迟型介质滤波器包括多个电介质同轴谐振器14,15，包括电抗元件的组合的耦合电路，电介质同轴谐振器14,15与其相互耦合，以及 连接到耦合电路端部的输入/输出端子11。 耦合到输入/输出端子11的电介质同轴谐振器14被允许具有与级间介质同轴谐振器15不同的特性阻抗。

    Balanced dielectric filter
    34.
    发明公开
    Balanced dielectric filter 有权
    平衡介质滤波器

    公开(公告)号：EP0939449A3

    公开(公告)日：2001-06-13

    申请号：EP99103505.6

    申请日：1999-02-24

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Ishizaki, Toshio ,  Yamada, Toru ,  Nakakubo, Hideaki ,  Kitazawa, Shoichi

    IPC: H01P1/203

    CPC classification number: H01P11/007 ,  H01P1/20345

    Abstract: The present invention relates to a balanced dielectric filter used in high-frequency circuits, such as those used for radio apparatuses, and provides a balanced dielectric filter having balanced input/output terminals. Namely, the balanced dielectric filter comprises two resonators, each comprising plural strip-line resonating elements, disposed in parallel and mutually coupled electro-magnetically, and input and output terminals coupled to each resonator so as to function as a pair of balanced input terminals and a pair of balanced output terminals, wherein the two resonators are located in a ceramic dielectric to face each other and to be mirror images of each other. The resonating element is a quarter-wavelength resonating element, the end of the strip line thereof is grounded. The strip lines and coupling electrodes are arranged among ceramic layers, whereby the filter is integrated into a ceramic-multilayered structure.

    Surface acoustic wave filter and multistage surface acoustic wave filter
    36.
    发明公开
    Surface acoustic wave filter and multistage surface acoustic wave filter 失效
    表面声波滤波器和多级声表面波滤波器

    公开(公告)号：EP0921636A3

    公开(公告)日：2000-05-17

    申请号：EP99103711.0

    申请日：1997-05-22

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Nakamura, Hiroyuki ,  Nishimura, Kazunori ,  Yamada, Toru ,  Ishizaki, Toshio

    IPC: H03H9/64

    CPC classification number: H03H9/6443 ,  H03H9/0028 ,  H03H9/02763 ,  H03H9/02913 ,  H03H9/02992 ,  H03H9/14588 ,  H03H9/14597 ,  H03H9/6463 ,  H03H9/6479

    Abstract: A surface acoustic wave filter on a piezoelectric substrate (101) comprising first and third surface acoustic wave resonators each having a reflector electrode (102b,102c) on both sides of an IDT electrode (102a,104a) as in inter-digital transducer electrode, said resonators being disposed on a piezoelectric substrate in positions in which directions of propagation of the respective surface acoustic waves are parallel with each other,    a plurality of strip line electrodes (103a) being disposed in parallel between said first and third surface acoustic wave resonators in the same electrode period as those of the first and third surface acoustic wave resonators, said plural strip line electrodes being connected one another by bus bar electrodes to form a second surface acoustic wave resonator having periodic structured electrode rows, said first and third surface acoustic wave resonators being disposed nearby to said second surface acoustic wave resonator to make acoustic couple, and the adjacent bus bar electrodes between said surface acoustic wave resonators being electrically separated, and all periodic structured electrodes of said second surface acoustic wave resonators being grounded,    assuming that an electrode finger crossing width of IDT electrodes (102a,104a) constituting the first and third acoustic wave resonators to be W1, and a strip line length of said periodic structured electrode rows (103a) constituting the second surface acoustic wave resonator to be W2, the relative size of W1 to W2 being set to 1≤ W2/W1.

    A package for an electrical device
    37.
    发明公开
    A package for an electrical device 失效
    房屋的电气设备

    公开(公告)号：EP0930659A3

    公开(公告)日：1999-12-01

    申请号：EP99107456.8

    申请日：1994-01-25

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Satoh, Yuki ,  Ishizaki, Toshio ,  Sakaue, Tsuyoshi ,  Hashimoto, Koji ,  Yamada, Tohru ,  Uwano, Tomoki

    IPC: H01L41/04 ,  H03H9/05

    CPC classification number: H03H9/1071 ,  H03H9/1035

    Abstract: A piezoelectric device includes a piezoelectric plate provided with at least one electrode at almost a central portion of each face; a first plate made of an ionic material having a recessed portion to cover the at least one electrode at one face to face the piezoelectric plate; and a second plate made of an ionic material having a recessed portion to cover the at least one electrode at one face to face the piezoelectric plate. Each of the at least one electrode is packaged by direct bonding the piezoelectric plate with the first plate and the second plate so as to be sandwiched therebetween. A package includes a body member made of an ionic material provided with a recessed portion or an opening, having a flat face around the recessed portion or the opening; and a covering member made of an ionic material having a flat face to cover the body member. The flat face of the body member and the flat face of the covering member are cleaned and attached to each other so as to be direct bonded with each other using hydrogen bonds generated between the ionic materials, thereby packaging the recessed portion or the opening.

    Dielectric resonator, dielectric notch filter, and dielectric filter
    39.
    发明公开
    Dielectric resonator, dielectric notch filter, and dielectric filter 失效
    介质谐振器，介质陷波滤波器和介质滤波器

    公开(公告)号：EP0877434A1

    公开(公告)日：1998-11-11

    申请号：EP98113083.4

    申请日：1994-10-10

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD

    Inventor： Satoh, Yuki ,  Hatanaka, Masami ,  Ishizaki, Toshio ,  Saka, Yuji ,  Nakamura, Toshiaki

    IPC: H01P1/208 ,  H01P7/10

    CPC classification number: H01P1/2084 ,  H01P1/20309 ,  H01P7/10

    Abstract: The dielectric resonator according to the invention comprises a cavity; a dielectric block fixed in the cavity; and a coupling device coupled with an electromagnetic field produced in the cavity. It further comprises a through hole which is formed in the dielectric block, a fixing shaft formed of a dielectric material is allowed to pass through the through hole, and one end of the fixing shaft is fixed to the cavity by a presser member.

    Abstract translation: 根据本发明的介质谐振器包括空腔; 固定在该腔中的介质块; 以及与在腔中产生的电磁场耦合的耦合装置。 其还包括形成在介质块中的通孔，允许由介电材料形成的固定轴穿过通孔，并且固定轴的一端通过压紧构件固定到腔体。

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