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Accession Number:
ADA026712
Title:
The Basic Theory of Phased Arrays with A Discussion of the Blind Angle
Descriptive Note:
Technical Report
Corporate Author:
AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States
Report Date:
1976-05-01
Pagination or Media Count:
84.0
Abstract:
This report reviews the underlying theory of the phased array and then examines one of its most limiting problems--the blind angle. The theory of the phased array is developed by studying a simple two element array and then progressing to multi-element arrays. Following this, the progressive phase shift is incorporated into the driving currents and its result examined. The blind angle phenomenon is presented and then a physical reason for its occurrence is sought. The mutual coupling concept is demonstrated by examining mutual impedance as a function of spacing. Then the two predominate theories, surface wave and modal, offering a physical insight into the phenomenon are examined. Considerable attention is devoted to the Ghost Mode Hypothesis of Oliner, et al. and the work of Louis Stark.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE