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    LARGE RESISTIVE VEE DIPOLE ANTENNA COMBINED WITH VEE DIPOLE ARRAY
    6.
    发明公开
    LARGE RESISTIVE VEE DIPOLE ANTENNA COMBINED WITH VEE DIPOLE ARRAY 有权
    与VEE偶极阵列结合的大电阻VEE偶极天线

    公开(公告)号：EP2715406A1

    公开(公告)日：2014-04-09

    申请号：EP12725590.9

    申请日：2012-05-25

    申请人： Niitek, Inc.

    发明人： WOLFSON, Jason, T. ,  ETEBARI, Ali

    IPC分类号： G01V3/17 ,  H01Q21/28 ,  H01Q9/44

    CPC分类号： G01S13/885 ,  G01S7/03 ,  G01V3/12 ,  G01V3/17 ,  H01Q9/44 ,  H01Q21/00 ,  H01Q21/28

    摘要： A radar array comprising a panel, the panel comprising a top side and a bottom side; a plurality of high-frequency antennas coupled into a high-frequency array coupled to the panel; at least one low-frequency resistive vee dipole transmitting antenna; and at least one low-frequency resistive vee dipole receiving antenna, wherein the at least one low-frequency resistive vee dipole transmitting antenna and the at least one low-frequency resistive vee dipole receiving antenna are coupled into a low-frequency array.

    摘要翻译： 包括面板的雷达阵列，所述面板包括顶侧和底侧; 耦合到耦合到面板的高频阵列中的多个高频天线; 至少一个低频电阻V偶极子发射天线; 以及至少一个低频电阻V型偶极子接收天线，其中所述至少一个低频电阻V型偶极子发射天线和所述至少一个低频电阻V型偶极子接收天线耦合成低频阵列。

    A directive antenna element
    9.
    发明公开
    A directive antenna element 失效
    Richtantennenelement。

    公开(公告)号：EP0100123A2

    公开(公告)日：1984-02-08

    申请号：EP83201062.3

    申请日：1983-07-19

    申请人： Philips Norden AB ,  Philips Electronics N.V.

    发明人： Cassel, Knut Erland

    IPC分类号： H01Q9/44 ,  H01Q19/13

    CPC分类号： H01Q9/44 ,  H01Q1/38 ,  H01Q19/13

    摘要： 0 The invention relates to a directive broad band antenna element of type V-shaped dipole with bent wire- or strip-shaped dipole conductors (A). The dipole conductors are divided into two sections, a first section (81) where the radiation is minimized (or prevented) by a small distance between the conductors and a reduced phase velocity, and a second section (S2), where the radiation is enhanced by increasing the phase velocity by means of introduced series capacitances (C1, C2.... Cn). The series capacitances are dimensioned differently, i.a. dependent on the locally prevailing inclination angle between the dipole conductors and the radiation direction (x), such that the phase velocity is increased a value which is required for bringing about that the radiation contributions from different parts of the conductors cooperate in the desired radiation direction at this special, locally prevailing inclination angle of the conductors. The introduction of the series capacitances brings about that the curvature of the conductors can be made much sharper and the extension of the whole antenna element in the radiation direction thereby will be much smaller for a given frequency band than in the case without series capacitances. This in combination with the reduced (inhibited) radiation from the first section (S1) makes that the displacement of the centrum of radiation, the phase centrum, with frequency will be limited and the antenna element can operate within a very extended frequency band, of the magnitude from 2 to 3 octaves, and still serve as primary radiator for illuminating a secondary radiator having a focal point, such as a parabolic reflector or an electromagnetic lens. The reduced phase velocity at the said first section (S1) can suitably be achieved by means of a small dielectric disc (D) place between the dipole conductor at the said first section and/or zig-zag shaped or inwardly toothed form of the conductors in the said first section (S1). (Fig. 1).