Abstract
AbstractElectromagnetic effects in double‐negative (DNG) materials are considered from the theoretical and numerical points of view. Special attention is given to the causality aspects. The refracton of a cylindrical wave excited by a line source placed above a plane DNG slab and the wave propagation through the slab are studied. The DNG material response is modelled by the resonant constitutive parameters of the Lorentzian form. A novel technique for discretization of the constitutive equations is proposed. The negative refraction and slab focusing phenomena are clearly seen from the simulations. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 4–7, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10807
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