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Institute for Space Systems Operations * 2001 Annual Report * 116
Stuart Long, Ph.D., Professor, Department of Electrical and Computer Engineering, Cullen College of Engineering
In the early 1980s, Prof. Stuart Long developed the dielectric resonator antenna (DRA). The DRA is a chip of ceramic-type material shaped in a designed manner-rectangular, hemispherical, or cylindrical-mounted on a ground plane, and fed by a probe, microstrip line, or a slot in the ground plane. At certain frequencies, these DRAs can be made to resonate. The physical dimensions and the composition of the material determine the frequency at which these devices resonate. Current research has focused upon efforts to increase bandwith. Thus, researchers find themselves moving higher into the electromagnetic spectrum and into the millimeter wave region where frequencies range from 30 GHz to 100 GHz.
Research is continuing on the mutual coupling between two cylindrical probe-fed DRAs. Findings compare favorably with previously measured data gathered from a slot-coupled rectangular DRA. Coupling decreased as the distance increased, supporting data consistent with common theoretical data regarding mutual coupling.
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Institute for Space Systems Operations - 2001
Annual Report
Copyright © 2002
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