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An efficient direct numerical synthesis method for dual offset reflector antennas which is directly based on the physical optics procedure for both reflectors (PO-PO-method) and where the reflector surfaces are advantageously characterized in the spatial domain by a 2D Fourier-transformation is described. The method uses an evolution-type optimization algorithm to shape both reflectors simultaneously so as to generate the desired far field with prescribed criteria. The efficiency of the design method is demonstrated for two computer-optimized dual-offset antenna designs for space applications, a very compact optimum shaped Gregorian Earth station antenna with high offset angle (70°) and small subreflector size (13 λ) and a shaped Cassegrain atmospheric sensor antenna for 200 GHz. The theory is verified by available measured results
Published in:
Microwave Theory and Techniques, IEEE Transactions on
(Volume:40
,
Issue:
6
)
Date of Publication: Jun 1992
- Page(s):
- 1310 - 1317
- ISSN :
- 0018-9480
- INSPEC Accession Number:
- 4215646
- Digital Object Identifier :
- 10.1109/22.141365
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Jun 1992
- Sponsored by :
- IEEE Microwave Theory and Techniques Society
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