Accession Number : AD0010246

Title :   ON THE DIFFRACTION OF ELECTROMAGNETIC WAVES BY ANNULAR, ELLIPTICAL AND RECTANGULAR APERTURES

Corporate Author : HARVARD UNIV CAMBRIDGE MASS CRUFT LAB

Personal Author(s) : HUANG,CHAANG

Report Date : 15 FEB 1953

Pagination or Media Count : 1

Abstract : A review is presented of the derivation of the Kirchhoff-type transmission coefficient as given by Levine and Schwinger (Communications on Pure and Applied Math. III, 4: Dec. 1950) for an aperture in an infinite, pefectly conducting plane of infinitesimal thickness with an incident plane electromagnetic wave. The tangential to be equal to that of the known incident magnetic field. With this relationship, the approximate transmission coefficients of annular, elliptical, and rectangular appertures are evaluated for normal incidence. Numerical results are plotted for appropriate dimensions of each aperture.

Descriptors :   APPLIED MATHEMATICS, COEFFICIENTS, ELECTROMAGNETIC PULSES, MAGNETIC FIELDS, NUMERICAL ANALYSIS, PLANE WAVES, THICKNESS, TRANSMITTANCE.

Distribution Statement : APPROVED FOR PUBLIC RELEASE