DocumentCode :
1360987
Title :
Mutual coupling compensation in small planar array antennas
Author :
Darwood, P. ; Fletcher, P.N. ; Hilton, G.S.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Volume :
145
Issue :
1
fYear :
1998
fDate :
2/1/1998 12:00:00 AM
Firstpage :
1
Lastpage :
6
Abstract :
Far-field pattern synthesis of small antenna arrays is a nontrivial problem. Typically the radiation patterns are required to exhibit low sidelobe levels, whilst maintaining the ability to scan the main beam in space. Mutual coupling is a pertinent problem when the number of antenna elements is small, often precluding the use of conventional tapering algorithms. A technique previously employed to compensate for mutual coupling in linear arrays is extended to include small planar antenna arrays. The method consists of the calculation of the coupling coefficients between the array elements, which are then formed into a matrix and used to compensate for the effects of mutual coupling. It is then shown that this method is not suitable for all planar array configurations and a new technique is developed which allows the calculation of coupling matrices for these element configurations. Measured data from a small planar antenna array is presented, with the outlined methods employed to produce sidelobe sum and difference beams
Keywords :
antenna phased arrays; antenna radiation patterns; linear antenna arrays; matrix algebra; antenna elements; coupling coefficients; coupling matrices; element configurations; far-field pattern synthesis; linear arrays; low sidelobe levels; main beam; measured data; mutual coupling compensation; phased arrays; sidelobe difference beams; sidelobe sum beams; small planar array antennas;
fLanguage :
English
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
Publisher :
iet
ISSN :
1350-2417
Type :
jour
DOI :
10.1049/ip-map:19981450
Filename :
667043
Link To Document :
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