A New Look at the Scattering of a Plane Wave by Rectangular Cylinder.
Abstract
In this paper, the scattered far-field pattern of a perfectly conducting rectangular cylinder illuminated by a plane H-wave is obtained by a modified form of GTD approximation and the result is subsequently improved in a straightforward manner by eliminating the discontinuities in the GTD far-field pattern. The improved scattered far-field pattern is compared with results obtained by other different approaches, and the similarities and differences between these results are discussed. Generally speaking, the improved pattern obtained by the present approach is in good agreement with the conventional moment-method solution. A method for checking the accuracy is also presented so that an independent check on the satisfaction of the boundary condition on the surface of the rectangular cylinder can be performed. The results of such an accuracy check are quite favorable, which demonstrates that the improved far-field pattern obtained by the present approach is indeed a close approximation to the true solution. The merit of such an independent accuracy checking scheme is that the approximate solution obtained can be validated without making comparison with other methods. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1977
- Accession Number
- ADA047627
Entities
People
- Raj Mittra
- W. L. Ko
Organizations
- University of Illinois Urbana–Champaign