Spherical wave expansions for shaped beam synthesis
作者:
M.J.Mehler,
期刊:
IEE Proceedings H (Microwaves, Antennas and Propagation)
(IET Available online 1988)
卷期:
Volume 135,
issue 5
页码: 327-332
年代: 1988
DOI:10.1049/ip-h-2.1988.0067
出版商: IEE
数据来源: IET
摘要:
A technique is proposed that evaluates efficiently the coefficients of a spherical wave expansion and is applicable to the optical synthesis of shaped beams. The method which extends previously published work, avoids the need to directly evaluate numerically a double integral to compute each coefficient. Examples are given of the technique when applied to Westcott's far-field optical synthesis procedure. The use of a tapered optical field distribution to improve the radiation characteristics of a shaped beam antenna is demonstrated.
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