Controlling Asymmetric Equal Side Lobe Level in Radiation Patterns of Array Antenna using Genetic Algorithm

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  • 遺伝的アルゴリズムを用いたアレーアンテナの非対称の等サイドローブ指向性制御
  • イデンテキ アルゴリズム オ モチイタ アレーアンテナ ノ ヒタイショウ ノ トウ サイドローブ シコウセイ セイギョ

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Many studies have been reported on obtaining an asymmetric equal side lobe level in the radiation pattern of a linear array antenna. But they have the disadvantage that processes are complicated and the applications of them are limited. The new method for it is proposed in this paper. The method takes advantage of level controlling and side controlling. At the same time, the peak levels of the side lobe are controlled by level controlling and the levels in arbitrary directions in the radiation pattern are controlled by side lobe controlling. The amplitude and phase of the currents for an asymmetric equal side lobe level in the radiation pattern of a linear array antenna are calculated by the method. In order to save computing times to derive calculation results, Genetic Algorithm (GA) is adopted. The method is verified by the theoretical results. The process of the method is simple and we will be able to apply it to get various radiation patterns.

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