Department of physics, Faculty of sciences, University of Qom, Iran & Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45195, PO Box 45195-1159, Iran
Department of Communication, Faculty of Electrical Engineering, K.N. Toosi University of Technology, Tehran, Iran
University of Isfahan, Isfahan, Iran
A metamaterial with a negative effective index of refraction is made from a three-dimensional hexagonal lattice photonic crystal with a metallic basis embedded in foam. It has been simulated with Ansoft HFSSTM in a frequency range from 7.0 to 12.0 GHz. Simulated results tested experimentally and negative refraction verified in some frequencies. Experimental results are in good agreement with simulations.
(Received January 22 2006)
(Revised January 23 2007)
(Accepted May 16 2007)
(Online publication June 28 2007)