The use of overlapping subarrays is a valuable technique for reducing the number of beam-steering devices required to scan an array over limited scan angles. An array of this type has been built at the CSIRO Division of Radiophysics for the small community azimuth scan in the Interscan microwave landing system. The reduction in the number of active beam-steering devices is achieved by using a matrix of stripline couplers in the feed circuit to illuminate the antenna aperture with the appropriate amplitude distribution function. This paper examines the performance and limitations of such an antenna in terms of bandwidth and scan angles. A technique for constructing one such antenna of 39 elements is presented and its performance compared with that of its theoretical equivalent.
A limited-scan linear array using overlapping subarrays
Lineargruppe mit begrenztem Abtastbereich auf der Basis sich ueberschneidender Teilsysteme
Journal of Electrical and Electronics Engineering, Australia ; 3 , 2 ; 126-131
1983
6 Seiten, 8 Quellen
Article (Journal)
English
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