Accession Number : ADP005409

Title :   A Lightweight Constrained Lens for Wide Angle Scan in Two Planes,

Corporate Author : ROME AIR DEVELOPMENT CENTER HANSCOM AFB MA ELECTROMAGNETIC SCIENCES DIV

Personal Author(s) : McGrath,Daniel T.

Report Date : FEB 1987

Pagination or Media Count : 23

Abstract : A new design principle has been used to construct a three-dimensional constrained lens whose planar front and back faces are arrays of microstrip patches. The two arrays face in opposite directions and have a common ground plane. Each back face element is connected to a front face element by a short length of microstrip line and a feed-thru hole in the ground plane. The lengths of those transmission lines is a function of radius, with the longest in the center. Wide-angle focusing is achieved by the addition of a second geometric degree of freedom - the back face elements are not directly behind their corresponding front face elements, but are displaced radially, with the amount of displacement also varying as a function of radius.

Descriptors :   *LENS ANTENNAS, *DIRECTIONAL ANTENNAS, ANGLES, LIGHTWEIGHT

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE