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A compact low-profile high-impedance surface for use as an antenna ground plane

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3 Author(s)
Raza, S. ; Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada ; Antoniades, M.A. ; Eleftheriades, G.V.

A compact and low-profile high-impedance surface is proposed which offers a significantly smaller footprint without affecting the usable reflection phase bandwidth of the structure. The unit cell of the proposed surface is similar to the traditional `mushroom' structure, but utilizes inter-digitated-capacitor and spiral-inductor lumped elements to reduce its size without sacrificing the in-phase reflection bandwidth. It is determined that the reflection-phase resonance and bandwidth is largely independent of the shunt inductive loading and depends primarily on the value of the series capacitive loading. Finally, an application of the structure as a high-impedance ground plane for a printed loop antenna is proposed.

Published in:

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Date of Conference:

3-8 July 2011