Iterative GA optimization scheme for synthesis of radiation pattern of linear array antenna

Todnatee, Sarayoot; Phongcharoenpanich, Chuwong

doi:10.1155/2016/7087298

Iterative GA optimization scheme for synthesis of radiation pattern of linear array antenna

Author(s)

Todnatee, Sarayoot

Phongcharoenpanich, Chuwong

Date Issued

January 1, 2016

Type

Article

DOI

10.1155/2016/7087298

Abstract

This research has proposed the iterative genetic algorithm (GA) optimization scheme to synthesize the radiation pattern of an aperiodic (nonuniform) linear array antenna. The aim of the iterative optimization is to achieve a radiation pattern with a side lobe level (SLL) of ≤-20 dB. In the optimization, the proposed scheme iteratively optimizes the array range (spacing) and the number of array elements, whereby the array element with the lowest absolute complex weight coefficient is first removed and then the second lowest and so on. The removal (the element reduction) is terminated once the SLL is greater than -20 dB (>-20 dB) and the elemental increment mechanism is triggered. The results indicate that the proposed iterative GA optimization scheme is applicable to the nonuniform linear array antenna and also is capable of synthesizing the radiation pattern with SLL ≤ -20 dB.

Citation

International Journal of Antennas and Propagation, 2016, 2016