Accession Number : AD0633495

Title :   ELECTRONICALLY STEERABLE ARRAY.

Descriptive Note : Final rept. 27 Aug-31 Dec 65,

Corporate Author : SYLVANIA ELECTRONIC SYSTEMS-CENTRAL WILLIAMSVILLE N Y

Personal Author(s) : Schiller,T. R. ; Heath,W. S.

Report Date : APR 1966

Pagination or Media Count : 57

Abstract : The report describes the effort to design and build a high gain, electronically steerable, millimeter antenna system. The antenna was constructed, adjusted for optimum performance and an extensive testing program carried out. The tests included measurements of radiation patterns at various scan angles, gain measurements, control power requirements, scan speed, and hysteresis effects. Consideration was also given to average and peak RF power and antenna efficiency. Results indicate that an antenna array of 5 elements is capable of scanning a beam 50 degrees at a rate of one degree per millisecond. The overall efficiency of this array was 60 percent taking into account both the illumination taper and insertion loss in the feed elements. Scanning both the element and array patterns eliminated the grating lobe phenomena normally associated with arrays of many wavelength elements. (Author)

Descriptors :   (*PHASED ARRAYS, ELECTRONIC SCANNERS), SCANNING, GAIN, MILLIMETER WAVES, ANTENNA RADIATION PATTERNS, PERFORMANCE(ENGINEERING), PHASE SHIFT CIRCUITS, ANTENNA FEEDS, FERROMAGNETIC MATERIALS, ANTENNA APERTURES

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE