Electromagnetic reflection from a curved dielectric interface
Abstract
The reflection of a highfrequency electromagnetic field from an arbitrarily curved dielectric interface is considered. The fields are expanded in asymptotic series of 1/k, known as LuneburgKline expansions. Based on a ray method, the zeroand firstorder terms of 1/k of the reflected and transmitted field are evaluated at the interface. Associated with the fields at the interface are effective surface current densities which can be used to determine the reflected and transmitted field at points away from the interface; this is done analytically for the reflected far field in the case of plane wave incidence. The result consists of a frequencyindependent term which is related to the geometrical optics solution, and the term 1/k which is a useful extension of the geometrical optics solution in some cases.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 June 1986
 DOI:
 10.1109/TAP.1986.1143902
 Bibcode:
 1986ITAP...34..842A
 Keywords:

 Dielectrics;
 Electromagnetic Scattering;
 High Frequencies;
 Ray Tracing;
 Wave Reflection;
 Asymptotic Methods;
 Cross Polarization;
 Current Density;
 Far Fields;
 Interfaces;
 Plane Waves;
 Communications and Radar