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    1. 如何安裝車載天線

      來發布于:2018/5/10 15:04:50

      影響GPS天線性能有哪些因素?
        1、陶瓷片:陶瓷粉末的好壞以及燒結工藝直接影響它的性能。
        2、銀層:陶瓷天線表面銀層可以影響天線共振頻率。
        3、饋點:陶瓷天線通過饋點收集共振信號并發送至后端。
        4、放大電路:承載陶瓷天線的PCB形狀及面積。
      汽車天線生產廠家教您如何安裝車載天線?
        (1)安裝前,先用萬用表檢查一下天線和同軸聯接器中心的導通情況,同軸聯接器的外部和中心的絕緣情況。
        (2)通信設備裝車使用時,天線通常安裝在車頂。對于鐵殼汽車,天線通常將車頂作為地網,裝置時應充分確認連接好地線。
        (3)裝車使用時,電纜線可通過車梁引入車內。如由車罩的空隙引入,最好利用發動機室的假孔;如從窗外引入,必須注意車門窗戶的啟閉不要損傷電纜。
        (4)裝車使用時,在起伏地帶及城市內,特別是大城市內會發生直射電波、反射電波、折射電波的疊加,產生多徑效應,從而出現電波的衰落及分布起伏現象。這種現象表現為通信設備收信效果的好壞,會隨著通信設備位置的移動而變化。有些地方收信很差,移動幾m就可能變得很好。這時,汽車應在附近移動一下,找到通信效果最好的位置。
        (5)通信設備裝車使用時,因天線高度很低,不要把車停在沿通信方向線上的障礙物附近或高壓輸電線下面。

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