Footprint patterns obtained by planar arrays
作者:
R.S.Elliott,
G.J.Stern,
期刊:
IEE Proceedings H (Microwaves, Antennas and Propagation)
(IET Available online 1990)
卷期:
Volume 137,
issue 2
页码: 108-112
年代: 1990
DOI:10.1049/ip-h-2.1990.0020
出版商: IEE
数据来源: IET
摘要:
An extension of Taylor's circular aperture pattern synthesis technique permits the generation of a flat-topped beam that is rotationally symmetric, surrounded by ring side lobes of controllable height, with the ripple amplitude also controllable. The corresponding continuous aperture distribution can be made pure real by appropriate root-pairing, which makes the results applicable, via sampling, to resonantly-spaced waveguide slot arrays. A one-dimensional linear stretch extends the results to rectangular grid planar arrays possessing an elliptical boundary. In that case the pattern is a fiat-topped beam with an elliptical contour, surrounded by ring side lobes also of elliptical contour, but with amplitude and side lobe level still controlled. The principal application is to space vehicle communication systems required to place a footprint pattern on a selected portion of the earth's surface.
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