Summary
International Symposium on Antennas and Propagation
2015
Session Number:S4.5
Session:
Number:S4.5.2
Design of a Dielectric Phase-Correcting Structure for an EBG Resonator Antenna Using Particle Swarm Optimization
Ali Lalbakhsh, Muhammad U. Afzal, Basit A. Zeb, Karu P. Esselle,
pp.-
Publication Date:2015/11/9
Online ISSN:2188-5079
Summary:
This paper presents a novel method to design an all-dielectric phase correcting structure (PCS) to improve phase uniformity on the aperture of a classical electromagnetic band gap resonator antenna (ERA). This PCS has fixed permittivity, but varying thickness in a plane perpendicular to the dominant radiated E-field component. A particle swarm optimization (PSO) algorithm and a commercial time-domain solver are combined to optimize the PCS thickness. The proposed PCS not only significantly reduces the phase non-uniformity, but also improves the broadside directivity of the ERA by 4.6 dBi.