Accession Number : ADP005399

Title :   Aperture Coupled Patch Antennas and Arrays,

Corporate Author : MASSACHUSETTS UNIV AMHERST DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s) : Schaubert,Daniel H. ; Pozar,David M.

Report Date : FEB 1987

Pagination or Media Count : 20

Abstract : Phased arrays of microstrip patch antennas are being studied extensively millimeter wave applications, in which the feeds for several elements including the T/R modules might be integrated onto a single GaAs substrate. It is hoped that this integrated method of fabrication will improve performance and reduce the cost per element in large arrays. Many investigators are finding, however, that patch arrays on GaAs do not perform as well as they would on a lower permittivity substrate. Also, the area available in the unit cell (generally lambda(o)/2 by lambda(o)/z) is not sufficient to place the radiators and all of the circuit components on a single surface. The aperture coupled patch antenna permits the use of a low epsilon(r) substrate for the antenna, and GaAs for the active circuits. An intervening ground plane isolates the feed network from the radiating face of the array, and undesirable via connections are not required. This paper describes an eight-element linear array of aperture coupled patches that is designed for E-plane scanning.

Descriptors :   *ANTENNA APERTURES, *ANTENNA ARRAYS, *COUPLING(INTERACTION), GALLIUM ARSENIDES

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE