Low profile dipole antenna backed by isotropic artificial magnetic conductor reflector
2012-06-29T08:31:34Z (GMT)
by
In this paper, the design of high gain low profile
antenna backed by isotropic Artificial Magnetic Conductor
(AMC) with an overall height of 0.045λ is introduced. First the
AMC structure, which utilizes the well known Jerusalem Cross
Frequency Selective Surface (JC−FSS) deployed on a grounded
dielectric slab, is studied and investigated. It is shown that the
JC−FSS offers stable resonance frequency with respect to the
plane wave angle of incidence as an isotropic AMC medium, very
compact size and acceptable bandwidth ≈ 13%. The return loss
of wire dipole antennas placed closely and parallel above an ideal
PEC (perfect electric conductor) and JC−FSS AMC structure
are investigated and compared to each other. Both Ansoft
HFSSTM and Ansoft DesignerTM have been used to predict the
reflection phase stop band of the JC−FSS structure and the
dipole antenna characteristics.