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    • 7. 发明专利
    • Helical antenna
    • 天使天使
    • JP2003347831A
    • 2003-12-05
    • JP2002152951
    • 2002-05-27
    • Antenna Giken Kkアンテナ技研株式会社
    • IIZUKA YASUSHIOKAMOTO YASUHISAHAGA TOSHIYUKI
    • H01Q21/24H01Q1/27H01Q1/40H01Q11/04
    • PROBLEM TO BE SOLVED: To provide a helical antenna which can be set to low profile, and can obtain predetermined radiational directivity and axis ratio characteristics.
      SOLUTION: A first board 11 formed of a first spiral element 13 above a reflection plate 10, and a second board 12 formed of a second spiral element 14 are arranged separated by a predetermined distance. Also, a second straight line element 16 is arranged between the first spiral element 13 and the second spiral element 14, and a first straight line element 15 is arranged between the reflection plate 10 and the first spiral element 13. An antenna element, connecting the first spiral element 13 and the second spiral element 14 to the first straight line element 15 and a second straight line element 16, is formed, and power is supplied from a power supply point formed to the low end of the first straight line element 15.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供可以设置为低轮廓的螺旋天线,并且可以获得预定的辐射方向性和轴比特性。 解决方案:由反射板10上方的第一螺旋形元件13形成的第一板11和由第二螺旋形元件14形成的第二板12以预定距离隔开布置。 而且,第一直线元件16配置在第一螺旋元件13与第二螺旋元件14之间,第一直线元件15配置在反射板10与第一螺旋元件13之间。天线元件 形成第一螺旋元件13和第二螺旋元件14到第一直线元件15和第二直线元件16,并且从形成在第一直线元件15的低端的电源点供电。 版权所有(C)2004,JPO