Title :
Design of a printed spiral antenna with a dielectric superstrate using an efficient curved segment moment method with optimisation using marginal distributions
Author :
Khamas, S.K. ; Starke, P.L. ; Cook, G.G.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK
Abstract :
A printed spiral antenna with a dielectric superstrate is designed using an efficient curved segment moment method employing complex images, which is driven by a marginal distribution optimisation algorithm. The substrate and superstrate permittivity and thickness values are optimised for good axial ratio, which together with reasonable gain is achieved over a wide bandwidth.
Keywords :
method of moments; microstrip antennas; optimisation; permittivity; spiral antennas; curved segment moment method; dielectric substrate; dielectric superstrate; image method; marginal distribution optimisation algorithm; printed spiral antenna; superstrate permittivity;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:20040628
