Title :
Scattering from dielectric gratings and periodic profiles characterized by an impedance boundary condition
Author :
Michielssen, E. ; Mittra, R.
Author_Institution :
Electromagn. Commun. Lab., Illinois Univ., Urbana, IL, USA
Abstract :
The authors present an algorithm for analyzing nonplanar dielectric gratings and doubly periodic profiles characterized by an impedance boundary condition (IBC). Not only are these structures used to model radar absorbing materials, but they find various optical applications as well. Attention is focused on purely dielectric gratings that are bounded by free space from one side only. For high-contrast dielectric interfaces, the scattering from the grating can be treated using an IBC. Numerical results are presented to illustrate the application of this technique.<>
Keywords :
boundary-value problems; dielectric properties of substances; diffraction gratings; electric impedance; electromagnetic wave scattering; dielectric gratings; free space; high-contrast dielectric interfaces; impedance boundary condition; optical applications; periodic profiles; radar absorbing materials; Algorithm design and analysis; Boundary conditions; Dielectric materials; Gratings; Impedance; Laser radar; Optical materials; Optical scattering; Radar applications; Radar scattering;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.174831
