"The problem of radiation from a waveguide-fed ground-plane aperture perturbed with a wedge-shaped dielectric insert was examined more carefully. The work initiated by Blumberg was continued, using a greater range of dielectric constants and smaller increments of angle.
Aperture field measurements were made over a range of dielectric constants for each wedge angle, in order to determine the change in amplitude distribution as a function of permittivity. Aperture phase measurements were also taken for selected angles. These were used with the amplitude data to predict, using numerical integration, the far-field radiation patterns of the perturbed aperture. Far-field patterns were then measured in an anechoic chamber and compared with the calculated patterns.
Results of the measurements were evaluated with respect to the application of this type of aperture loading to a beam scanning antenna. The relationship of modes appearing in the aperture amplitude distribution to the changes in far-field patterns were especially considered. A partially-filled-waveguide approximation model was developed, for which it was shown that modes similar to those found in the wedge perturbed aperture could be produced"--Abstract, page ii.
Skitek, G. G. (Gabriel G.)
Carson, Ralph S.
Antle, Charles E.
Rivers, Jack L.
Electrical and Computer Engineering
M.S. in Electrical Engineering
University of Missouri at Rolla
vi, 75 pages
© 1967 John G. Hemmann, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Microwave measurements -- Computer simulation
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Hemmann, John G., "Mode analysis of the unsymmetrically fed ground-plane aperture" (1967). Masters Theses. 2937.