Electromagnetic Analysis of Radomes by the Moment Method,
GENERAL DYNAMICS SAN DIEGO CA ELECTRONICS DIV
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The electromagnetic performance of radomes is usually analyzed approximately by ray tracing, surface integration, or angular spectra. A significant approximation is that the radome is locally flat, and transmittance at a point is described by a set of flat sheets of infinite extent. This approximation is significant in the analysis of wave polarization dependence of boresight error, especially near the shadow of a tip where the surface normal direction varies rapidly because of circumferential curvature. This paper describes calculations for hollow wedges these are based on a theory of J. H. Richmond for hollow cylinders of arbitrary shape. The paper also gives a new theory for hollow cones and circular rings, and it compares computed and measured phase and intensity values for a cone and a ring.