Paraboloidal reflectors with axial excitation
作者:
A.R.Donaldson,
I.P.French,
D.Midgley,
期刊:
Proceedings of the IEE - Part B: Electronic and Communication Engineering
(IET Available online 1960)
卷期:
Volume 107,
issue 36
页码: 547-552
年代: 1960
DOI:10.1049/pi-b-2.1960.0166
出版商: IEE
数据来源: IET
摘要:
The reflectors are deep paraboloids having axially oriented dipoles at the foci. Odd-function aperture distributions and radiation patterns are derived by approximate methods and are compared with an experimental polar diagram. In spite of a null along the axis, strong coupling at short range is observed between two aligned aerials. This is associated with a coupling diagram of abnormal directivity, which may be explained by a principle of field-fitting between the incident field and the normal aperture distribution. A reduction of Maxwell's equations in paraboloidal co-ordinates to Bessel's equation is appended.
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