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    • 1. 发明授权
    • Broadband quardifilar helix with high peak gain on the horizon
    • 在地平线上具有高峰值增益的宽带四边形螺旋线
    • US06812906B2
    • 2004-11-02
    • US10138855
    • 2002-05-03
    • Mark Lawrence GoldsteinRichard John NinkWilliam Dean Killen
    • Mark Lawrence GoldsteinRichard John NinkWilliam Dean Killen
    • H01Q136
    • H01Q1/362H01Q11/08
    • The invention concerns a quadrifilar helix antenna that has four orthogonal conductive elements helically wound around a common axis. Each of the conductive elements can have between 3 to 7 turns about the common axis at a pitch of between 45 to 65 degrees. Further, each turn has a diameter of about 0.13 wavelengths to 0.27 wavelengths. A feed coupler excites each of the orthogonal conductive elements in phase quadrature at a feed point located at a first end of the antenna adjacent to a ground plane. The resulting antenna can have an axial length of about 2.3 wavelengths to 6.9 wavelengths. Unlike conventional quadrifillar helix antennas, an opposing end of each of the conductive elements distal from the feed point forms an open circuit. The antenna configured as described can have a peak gain on horizon when the common axis is oriented vertically.
    • 本发明涉及一种四边形螺旋天线,其具有围绕公共轴线螺旋缠绕的四个正交导电元件。 每个导电元件可以以45至65度的间距围绕公共轴线3至7匝。 此外,每个匝具有约0.13波长至0.27波长的直径。 馈电耦合器在位于天线的与接地平面相邻的第一端处的馈电点处相位正交地激励每个正交导电元件。 所得到的天线可以具有约2.3波长至6.9波长的轴向长度。 与传统的四叶螺旋天线不同,远离馈电点的每个导电元件的相对端形成开路。 当公共轴垂直定向时,如上所述配置的天线可以在水平线上具有峰值增益。