%0 Journal Article
%T Characterization, Design and Optimization of Low-Profile Cavities for UWB Spiral Antennas
%J International Journal of Electromagnetics and Applications
%@ 2168-5045
%D 2012
%I 
%R 10.5923/j.ijea.20120203.01
%X In this paper, we present a methodology for developing very low profile, hybrid, cavity-backed UWB spiral antennas from a precision electromagnetic material characterization standpoint. Using our method, we have accurately characterized, designed and optimized the dimensions of a 2-18GHz, cavity-backed Archimedean spiral antenna. The simulation and measurement results show that the antenna demonstrates excellent axial ratio and gain-bandwidth performance while maintaining an absorptive cavity depth of only 0.625 inches. The procedure can be extended to the design and optimization of any low-profile spiral radiator required to operate over extremely broad frequencies.
%K Low profile cavity-backed spiral antenna
%K Archimedean spiral
%K UWB
%K axial ratio
%K complex permittivity and permeability
%U http://article.sapub.org/10.5923.j.ijea.20120203.01.html