DocumentCode
1209323
Title
Improved element pattern for the line feeds of the spherical reflector antenna in Arecibo
Author
Ulversoy, T. ; Kildal, Per-Simon
Author_Institution
Norwegian Inst. of Technol., Trondheim, Norway
Volume
37
Issue
12
fYear
1989
fDate
12/1/1989 12:00:00 AM
Firstpage
1624
Lastpage
1627
Abstract
The line feeds of the spherical reflector antenna in Arecibo are considered. A model for the element pattern is presented and used to give a better explanation of the central dip in the radiation pattern of the line feed than that given before. The model includes the effect of the fins between the elements by considering the line feed to be a circularly corrugated cylinder. Such a corrugated cylinder has, according to recent results, a soft outer surface at which the electric field vanishes
Keywords
antenna feeders; antenna radiation patterns; radiotelescopes; reflector antennas; Arecibo; circularly corrugated cylinder; element pattern; line feeds; radiation pattern; radiotelescope; spherical reflector antenna; Antenna feeds; Antenna radiation patterns; Apertures; Corrugated surfaces; Diffraction; Observatories; Optical design; Optical surface waves; Optical waveguides; Reflector antennas;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/8.45107
Filename
45107
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