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Cloaking a reflector antenna using coordinate transformation approach

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3 Author(s)
Tang, Wenxuan ; Dept. of Electron. Eng., Queen Mary, Univ. of London, London, UK ; Yang Hao ; Mittra, R.

We present a scheme to realize an undetectable reflector antenna. Discrete coordinate transformation is employed to design an `invisible' carpet cloak which is functional to hide objects underneath. A parabolic reflector located under the designed carpet cloak is rendered undetectable to the external observers whilst still possessing its radiation characteristics. Furthermore, a novel kind of underground reflector is proposed, applying a new technique called `virtual boundary'. This new reflector is reduced to be all-dielectric so as to obtain a broadband performance. The Finite-Difference Time-Domain (FDTD) method is used to predict the performances of the proposed antenna systems at X-band. We show, via simulation results that an interrogating incident field cannot easily distinguish the reflector antennas from the flat ground plane. We also verify that the antenna systems have good radiation characteristics.

Published in:

Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on

Date of Conference:

11-15 April 2011