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Notes on RF scale testing of tower mounted antennas for cellular communication

机译:有关用于蜂窝通信的塔顶安装天线的RF规模测试的注意事项

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Scale model towers with associated antenna installations provide an efficient and fast means to test current and future 1800 MHz mobile communication base station installations prior to site, antenna type or mounting scheme selection. Repeatability better than 1 dB is readily achieved if the scale reduction is between 1:5-1:15. Many measurements are possible with a very short anechoic test range, just fulfilling the far field requirement. Typical findings include the possibility to effectively reduce interference minima caused by adjacent vertical structures by simply positioning a thin absorptive sheet to the optimum location. Improvements of the order of 20 to 30 dB have been measured.
机译:带有相关天线装置的比例模型塔提供了一种高效,快速的方法,可以在选择站点,天线类型或安装方案之前测试当前和将来的1800 MHz移动通信基站装置。如果缩小比例在1:5-1:15之间,则容易获得优于1 dB的可重复性。仅需满足远场要求,就可以在很短的消声测试范围内进行许多测量。典型的发现包括通过将薄的吸收性薄片简单地放置在最佳位置,就可以有效减少相邻垂直结构引起的最小干扰的可能性。已经测量到大约20到30 dB的改善。

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