Superdirective property of the microwave axicon
作者:
S.Cornbleet,
期刊:
Proceedings of the Institution of Electrical Engineers
(IET Available online 1970)
卷期:
Volume 117,
issue 5
页码: 869-872
年代: 1970
DOI:10.1049/piee.1970.0173
出版商: IEE
数据来源: IET
摘要:
The microwave axicon considered is the analogue of the simple optical axicon. It consists of a dielectric cone of large semivertex angle placed in the aperture of a focused antenna. The effect shown both theoretically and experimentally is to reduce the beamwidth of the far-field radiation pattern to about two-thirds of the original value with an increase in the sidelobe level. In certain conditions this can give rise to a narrower pattern than that from a uniformly illuminated aperture of the same diameter.
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