Performance of firefly algorithm for null positioning in linear arrays

Abstract

In this paper, linear array (LA) synthesis for desired nulls is performed using firefly algorithm (FFA). The undesired signals are often termed as interference approaching the radiating system in certain directions. It is possible to reject these signals thereby avoiding potential interference by simply placing nulls in the direction of arrival of interference in the respective radiation pattern of the antenna array. In order to demonstrate this, single and multiple nulls are obtained using FFA in linear arrays. The radiation patterns are obtained for both single and multiple nulls when the beam is positioned from 0° to 30° which typically refers to scanned and unscanned beams.