Title :
Propagation of Electromagnetic Waves in a Sinusoidally Modulated Dielectric Substrate
Author :
Matekovits, L. ; Colome, G.C.V. ; Orefice, M.
Author_Institution :
Dept. of Electron., Politecnico di Torino
fDate :
6/29/1905 12:00:00 AM
Abstract :
A single-layer microstrip structure with variable line width is considered in order to create, by periodic repetition, an electromagnetic bandgap structure. The width of the line is varied in such a way as to guarantee a sinusoidally modulated value of the effective dielectric constant along the longitudinal direction. By repeating periodically the structure in the orthogonal direction, a high-impedance surface is obtained. Continuous and discrete line configurations are considered, and the performances of the two-dimensional structure with respect to the uniform line case are compared
Keywords :
microstrip lines; photonic band gap; waveguide theory; dielectric constant; electromagnetic bandgap structure; electromagnetic waves propagation; single-layer microstrip structure; sinusoidally modulated dielectric substrate; two-dimensional structure; variable line width; Dielectric constant; Dielectric substrates; Electromagnetic propagation; Electromagnetic scattering; Magnetic materials; Metamaterials; Microstrip; Optical materials; Optical surface waves; Periodic structures; Electromagnetic bandgap (EBG); microstrip structures; periodic structures;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2007.893098
