Design of Low-Profile High-Gain EBG Resonator Antennas Using a Genetic Algorithm

Author

Ge, Yuehe ; Esselle, Karu P. ; Hao, Yang

Author_Institution

Macquarie Univ., Sydney

Volume

6

fYear

2007

fDate

6/29/1905 12:00:00 AM

Firstpage

480

Lastpage

483

Abstract

In this letter, we present a method to enhance the gain of electromagnetic band-gap (EBG) resonator antennas composed of a single-substrate frequency-selective-surface (FSS) using a genetic algorithm (GA). In our method, the gain enhancement is realized by optimizing the metallic patterns etched on the two surfaces of the FSS layer, using a GA, and, hence, increasing the quality factor (Q-factor) of the EBG resonant cavity. The method is demonstrated using an example design and a prototype single layer EBG resonator antenna that achieves a gain of over 21 dB, which is normally reached only by a multilayer EBG antenna if the metallic patterns are not optimized.

Keywords

antennas; genetic algorithms; photonic band gap; EBG; FSS; Q-factor; electromagnetic band-gap; frequency-selective-surface; gain enhancement; genetic algorithm; low-profile high-gain EBG resonator antennas; quality factor; Algorithm design and analysis; Design optimization; Etching; Frequency selective surfaces; Genetic algorithms; Nonhomogeneous media; Optimization methods; Prototypes; Q factor; Resonance; Electromagnetic band-gap (EBG); genetic algorithm (GA); high directivity; high gain; resonator antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2007.907054

Filename

4339502