Lens antennas with amplitude shaping or sine condition
作者:
SamiraBishay,
S.Cornbleet,
J.Hilton,
期刊:
IEE Proceedings H (Microwaves, Antennas and Propagation)
(IET Available online 1989)
卷期:
Volume 136,
issue 3
页码: 276-279
年代: 1989
DOI:10.1049/ip-h-2.1989.0051
出版商: IEE
数据来源: IET
摘要:
The paper demonstrates the method of generic curve series to obtain the profiles of dielectric antennas, with design conditions either for the specification of the aperture-amplitude distribution from a given source distribution, or for agreement with the Abbe sine condition. The method has already proved successful in the design of dual reflector antennas, and the extension to refractive media is shown to be straightforward. The method basically involves obtaining two equivalent expressions for a fundamental parameter from the usual optical equations and internal geometry of the lens, and obtaining agreement between them by a computational optimisation procedure using the series of curves. The parameter used in the paper is the internal segment of the ray within the lens. The method applies equally well to lenses with othera prioriconditions such as afocal linear magnification or off-axis bifocality.
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