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Analysis of gain enhancement in antenna arrays covered with metamaterial superstrates using transmission line modeling

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3 Author(s)
Attia, H. ; Electr. & Comput. Eng. Dept., Univ. of Waterloo, Waterloo, ON, Canada ; Siddiqui, O. ; Ramahi, Omar M.

Reciprocity theorem in conjunction with transmission line analogy and the cavity model is employed to develop a very fast analytical solution for the radiation fields of microstrip antenna arrays covered with magneto-dielectric superstrates. The superstrate is designed using broadside coupled split ring resonator (SRR) inclusions and is placed at approximately one-tenth of a wavelength apart from a 4×1 microstrip patch array operating at 2.2 GHz. Good agreement is obtained between the proposed analytical formulation and full-wave numerical simulations. The proposed formulation requires only 2.5 % of the time acquired by full-wave analysis. A gain increase of about 3.5 dB is achieved after covering the antenna array with the engineered magnetic superstrate.

Published in:

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

Date of Conference:

3-8 July 2011

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