Summary
International Symposium on Antennas and Propagation
2012
Session Number:2D1
Session:
Number:2D1-1
A Uniform Asymptotic Solution for Reflected and Scattered Fields over Half-space Metamaterials
Toru Kawano, Toyohiko Ishihara,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
The problems of an electromagnetic wave that is incident on a plane dielectric interface consisting of two different mediums have been the important research subjects for many years. When the beam is incident on the dielectric interface from the denser medium, the lateral displacement occurs at an angle that is slightly larger than the critical angle of the total reflection. When the cylindrical wave is incident on the negative index material (NIM) from the positive index material (PIM) side, it has been shown that the backward lateral wave is excited along the interface between the NIM and the PIM. In this work, we shall derive the novel uniform asymptotic solution for the reflected and scattered fields over half-space metamaterials with the negative refractive index. The asymptotic solution consists of the geometrically reflected ray on the metamaterial, the backward lateral waves, and the transition wave which plays an important role in the transition region. The validity of the novel uniform asymptotic solution is confirmed by comparing with the reference solution calculated numerically from the integral representation.