Title :
Curved and plane frequency selective surfaces: a study of two offset subreflectors
Author :
Mok, T.S. ; Allam, A.M.M.A. ; Vardaxoglou, J.C. ; Parker, E.A.
Abstract :
A computer model has been developed in parallel with an experimental study to determine the performance of two offset frequency selective subreflectors, consisting of arrays of concentric rings laid on ABS and expanded polystyrene formers. Radiation patterns in the reflection and transmission modes are compared with those for flat surfaces with the same edge profile, and in reflection with metallic surfaces. The curvature of the subreflectors was small, but still had a noticeable effect on the linear crosspolar patterns in transmission.
Keywords :
antenna radiation patterns; microwave antennas; reflector antennas; acronyl-butyl-styrene substrate; computer model; concentric rings; curved surfaces; dichroic surfaces; expanded polystyrene formers; flat surfaces; frequency selective surfaces; linear crosspolar patterns; metallic surfaces; offset frequency selective subreflectors; plane surfaces; radiation patterns; reflection modes; transmission modes;
Journal_Title :
Electronic and Radio Engineers, Journal of the Institution of
DOI :
10.1049/jiere.1988.0071
