High frequency antenna with a variable directing radiation pattern
    1.
    发明授权
    High frequency antenna with a variable directing radiation pattern 失效
    具有可变导向辐射图案的高频天线

    公开(公告)号:US5235343A

    公开(公告)日:1993-08-10

    申请号:US748326

    申请日:1991-08-21

    IPC分类号: H01Q3/44 H01Q19/28

    CPC分类号: H01Q19/28 H01Q3/446

    摘要: The present invention relates to an antenna apparatus emitting or receiving high frequency waves and comprising four parasitic vertical rod elements disposed symmetrically to a central vertical rod element and switching elements controlled by a control circuit so that the parasitic rod elements are applied successively and periodically to the ground potential by the control circuit.

    摘要翻译: 本发明涉及一种发射或接收高频波的天线装置,包括四个寄生的垂直杆元件,其对称地布置在中心垂直杆元件和由控制电路控制的开关元件中,使得寄生杆元件被连续和周期地施加到 控制电路的接地电位。