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Analysis of EM penetration into and scattering by electrically large open waveguide cavities using Gaussian beam shootingGaussian beam (GB) representation methods are used to analyze the electromagnetic coupling into and the scattering by a large nonuniform cavity. The aperture field in the cavity is decomposed into beams using the Gabor expansion, and shooting techniques are then employed. The method is illustrated only for the two-dimensional (2-D) case. The GBs are tracked axially using the rules of beam optics which ignore any beam distortion upon reflection at the walls. The effects of beam distortion are not significant for relatively slowly varying waveguide cavities. The field scattered into the exterior by the termination within the cavity is found using a reciprocity integral formulation which requires a knowledge of the beam fields near the termination. Numerical results based on this GB approach are presented and compared with results based on an independent reference solution.
Document ID
19920039682
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Burkholder, Robert J.
(Ohio State Univ. Columbus, OH, United States)
Pathak, Prabhakar H.
(Ohio State University Columbus, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1991
Publication Information
Publication: IEEE, Proceedings
Volume: 79
ISSN: 0018-9219
Subject Category
Communications And Radar
Accession Number
92A22306
Funding Number(s)
CONTRACT_GRANT: NAG3-476
Distribution Limits
Public
Copyright
Other

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