Nulls and side lobe levels control in a time modulated linear antenna array by optimizing excitations and element locations using RGA

Abstract

In this paper a novel approach based on the Real coded Genetic Algorithm (RGA) is proposed to improve nulling performance as well as suppression of Side Lobe Level (SLL) of a Time Modulated Linear Antenna Arrays (TMLA). RGA adjusts the static excitation amplitudes as well as the location of each element from the origin to place deeper nulls in the desired direction. Three design examples are presented that illustrate the use of the RGA, and the optimization goal in each example is easily achieved.

Keywords

• Time Modulated Linear Antenna Array
• Far-field Pattern
• Genetic Algorithm
• Amplitude Excitation
• Deeper Null
• Side Lobe Level