Accession Number : AD0285513

Title :   DESIGN OF A PARALLEL PLATE MICROWAVE LENS

Corporate Author : VARO INC GARLAND TEX

Personal Author(s) : SALISBURY,WINFIELD W. ; FLYNT,WILLIAM R.

Report Date : 22 AUG 1962

Pagination or Media Count : 1

Abstract : Two parallel plate microwave lenses were investigated. These lenses operate on the principle that microwave energy will propagate between parallel conducting sheets with a phase velocity exceeding that of light; hence, this 'medium' has an apparent index of refraction which is less than unity. When the bounding contours of such an assembly of plates are suitably shaped, then the assembly is analogous to an optical lens, and can be made to focus microwave energy. In this case, the bounding contours have the form of ellipsoids of revolution, and the equations and parameters necessary to shape the contours properly are derived and discussed. A complete design is described for a 5 foot square lens with focal length of 5 feet and an index of refraction of 9/16, operated at a wavelength of 12.5 cm. (Author)

Descriptors :   *LENS ANTENNAS, *MICROWAVES, DESIGN, ELLIPSOIDS, ENERGY, NARROWBAND, OPTICS, PROPAGATION, REFRACTIVE INDEX, SHEETS

Distribution Statement : APPROVED FOR PUBLIC RELEASE