Analysis of Twodimensional Electromagnetic Scattering from Nonplanar Periodic Surfaces Using a Strip Current Model

Amir Boag, Yehuda Leviatan, Alona Boag

Research output: Contribution to journalArticlepeer-review

Abstract

A method of moments solution is presented for the problem of twodimensional transverse magnetic (TM) scattering of a plane wave from a nonplanar periodic surface separating two contrasting homogeneous media. The moment solution uses fictitious spatially periodic and properly modulated electric current strips to simulate the field scattered by the surface and the field penetrated through the surface. The fields radiated by the current strips are represented in terms of Floquet modes and the problem is reduced to a consideration of the fields over a single period. Finally, the simulated fields are forced to obey the continuity conditions for the tangential components of the electric and magnetic fields at a selected set of points on the interface within a single period. The procedure is simple to implement, rapidly converging, and is applicable to arbitrary smooth profiles. Perfectly conducting media are treated as reduced cases of the general procedure for penetrable media. Results for sinusoidal surfaces are given and compared with available data. The efficiency of the suggested method is demonstrated.

Original languageEnglish
Pages (from-to)1437-1446
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Volume37
Issue number11
DOIs
StatePublished - Nov 1989
Externally publishedYes

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