Accession Number : AD0731821

Title :   Double-Spherical Cassegrain Reflector Geometric Optical Solution.

Descriptive Note : Technical rept.,

Corporate Author : WASHINGTON UNIV SEATTLE DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Ishimaru,Akira ; Wong,Vincent K. ; Sreenivasiah,Ippalapalli

Report Date : JUN 1971

Pagination or Media Count : 34

Abstract : There is a need for high gain antennas which are capable of rapid scanning and multibeam operations. The report presents a study of double-spherical Cassegrain reflector to ascertain whether this antenna is practical for these purposes. The aperture blocking, the spread of the field, and the phase and amplitude distributions are examined using geometric optical technique There is no single optimum condition, but it is shown that a proper combination of the subreflector and main reflector sizes and the position of the feed can indeed produce a promising antenna. (Author)

Descriptors :   (*ANTENNAS, REFLECTORS), SPHERES, NUMERICAL ANALYSIS, ANTENNA FEEDS, ANTENNA APERTURES

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE