Title :
Negative Refraction Without Negative Index
Author :
Hansen, Robert C.
Author_Institution :
R. C. Hansen, Inc., Tarzan
Abstract :
Refraction of a microwave plane wave by a wedge with exact characterization of and is evaluated by a ray approach. Snell´s Law is used for the lossless wedge, while exact formulations are used for the propagation constants and angle in the lossy wedge. The heavily lossy wedge produces negative refraction. Data are given on the loss factor that allows Snell refraction to be exactly reversed by lossy refraction, and the internal angle in the lossy wedge.
Keywords :
dielectric losses; electromagnetic wave refraction; microwave propagation; Snell law; dielectric losses; lossy wedge refraction; microwave plane wave refraction; negative index; negative refraction; Attenuation; Brain modeling; Dielectric constant; Dielectric losses; Glass; Gratings; Image analysis; Lattices; Propagation constant; Propagation losses; Lossy wedge; Snell refraction; negative refraction;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2007.915440
