Scattering from dielectric frequency selective structures

Summary, in English

A plane wave impinges on a laterally double-periodic inhomogeneous lossy

dielectric structure. Using a wave splitting approach, and an expansion of the

fields and permittivity in global and local basis functions, respectively, the

scattered fields are determined via a propagator. The formulation is useful

for a permittivity which varies abruptly as well as in a continuous fashion.

A subdomain basis for the constitutive parameter is preferred to an entire

domain basis. Calculated results are compared with experimental data for

a slab with domains of a piecewise homogeneous permittivity. The agreement

is good considering the error sources in the experiment. The results

are in a special case also compared with results obtained by an entirely different

method showing very good agreement. The method is also used on a

pyramidal absorber-like structure.

• Author: Ola Forslund; Anders Karlsson; Sören Poulsen
• Department/s: Department of Electrical and Information Technology
• Publishing year: 2001
• Language: English
• Publication/Series: Technical Report LUTEDX/(TEAT-7101)/1-23/(2001)
• Full text: - 569 kB; Download statistics
• Document type: Report
• Publisher: [Publisher information missing]
• Topic: Electrical Engineering, Electronic Engineering, Information Engineering
• Status: Published
• Report number: TEAT-7101
• Research group: Electromagnetic theory