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Thin frequency selective surface (FSS) superstrate with different periodicities for dual-band directivity enhancement

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4 Author(s)
Young Ju Lee ; Pohang Univ. of Sci. & Technol., South Korea ; Junho Yeo ; Mittra, R. ; Wee Sang Park

In this paper we present a novel design of a high directivity resonator antenna that utilizes a two-layered frequency selective surface (FSS) superstrate with different periodicities - as an alternative to a conventional FSS superstrate - for dual band directivity enhancement to reduce its height. Two strip dipole arrays with different periodicities are placed above and below a dielectric layer. The proposed thin FSS superstrate yields 13.1 and 19.54 dBi directivity enhancements at 8.75 GHz and 12.7 GHz, respectively, as compared to that of a patch antenna (6 dBi), while its height is only one half of that of a conventional patch antenna.

Published in:

Antenna Technology: Small Antennas and Novel Metamaterials, 2005. IWAT 2005. IEEE International Workshop on

Date of Conference:

7-9 March 2005