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Browse Journals & Magazines > Microwaves, Antennas and Prop ...> Volume:140 Issue:4 Help

Shielding of single- and double-reflector earth station antennas: a near- and far-field approach

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2 Author(s)
van Dooren, G.AJ. ; Fac. of Electr. Eng., Eindhoven Univ. of Technol., Netherlands ; Govaerts, H.J.F.G.

This paper describes the off-axis radiation pattern calculation of a Cassegrain antenna system with prescribed geometrical parameters, in the absence and presence of a (hypothetical) half-plane obstacle located either in the near or far field of the antenna. The attenuation caused by the obstacle as a function of antenna orientation and position is calculated and presented. The results for the halfplane shielding of the double-reflector system are compared with those obtained for a single-reflector antenna system shielded by the same obstacle. Three different, but related, approaches for calculating the additional propagation loss are presented and compared. It is found that the proposed near-field approach gives the best overall results

Published in:
Microwaves, Antennas and Propagation, IEE Proceedings H  (Volume:140 ,  Issue: 4 )

Date of Publication: Aug 1993

Page(s):
309 - 314
ISSN :
0950-107X
INSPEC Accession Number:
4472809
Product Type:
Journals & Magazines
Date of Current Version :
06 August 2002
Issue Date :
Aug 1993

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