Accession Number : AD0851120

Title :   The Admittance of a Surface of Periodic Apertures in an Infinite Plane,

Corporate Author : ARMY MISSILE COMMAND REDSTONE ARSENAL AL ADVANCED SENSORS DIRECTORATE

Personal Author(s) : Spaulding, William G.

Report Date : 19 MAR 1969

Pagination or Media Count : 86

Abstract : The admittance of a resonant screen illuminated by an electromagnetic wave of arbitrary incidence is investigated. The screen consists of periodic rectangular apertures in an infinite conducting plane. Fourier analysis coupled with Floquet's theorem is used to obtain an expression for admittance as a function of the angle of incidence, the electrical dimensions of the periodic geometry, and a parametric field distribution. Experimental verification of the theory is shown through comparison of numerical results and measurements utilizing the concept of the waveguide simulation of an infinite array. (Author)

Descriptors :   (*ANTENNA APERTURES, ADMITTANCE), ANTENNA ARRAYS, ELECTROMAGNETIC RADIATION, THEORY, NUMERICAL ANALYSIS, PROPAGATION, SIMULATION.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE