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    • 4. 发明授权
    • Filter construction and oscillator for frequencies of several gigahertz
    • 滤波器结构和振荡器频率为几千赫兹
    • US06215376B1
    • 2001-04-10
    • US09310706
    • 1999-05-07
    • Panu HagströmJari Pelkonen
    • Panu HagströmJari Pelkonen
    • H01P120
    • H01P1/2053
    • A radio-frequency filter (400, 500, 600) comprises a base plate (401, 603) and an electrically conductive ground plane in connection with it, a predetermined number of inner conductors (403A-403G, 501, 502, 601) attached substantially perpendicularly to the base plate which have a first end and second end, and an electrically conductive casing (402, 503, 602) which is connected at one side to the base plate and substantially surrounds said inner conductors. A first end of each inner conductor is in contact with said ground plane and a second end is in contact with said electrically conductive casing so that the resonators comprising the inner conductors, ground plane and casing function as half-wave resonators.
    • 射频滤波器(400,500,600)包括基板(401,603)和与其连接的导电接地平面,预定数量的内部导体(403A-403G,501,502,601)基本上 垂直于具有第一端和第二端的基板,以及导电壳体(402,503,602),其在一侧连接到基板并且基本上围绕所述内部导体。每个内部导体的第一端是 与所述接地平面接触,并且第二端与所述导电壳体接触,使得包括内部导体,接地平面和壳体的谐振器用作半波谐振器。