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天线增益与方向图的关系

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Basic knowledge of antenna

Release Date:

2019/11/04

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一般说,天线的主瓣波束宽度越窄,天线增益越高

   1)当旁瓣电平及前后比正常的情况下,可用下式近似表示

      G( dB ) = 10log32000 / 2θ0.5E 2θ0.5H

   2)对反射面天线,则由于有效照射效率因素的影响,故

      G( dB ) = 10log27000 / 2θ0.5E 2θ0.5H