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A simple and low-cost solution to reduce the height and weight of extended hemispherical lenses is proposed based on the introduction of a cylindrical air cavity above the primary feed. The presence of an additional air-dielectric interface enables one to shorten the focal length of the lens, which leads to antenna height and weight reductions of 13% and 27%, respectively. The communication describes the design principle and performance characteristics of the reduced-size integrated lens antenna, superimposed with a conventional synthesized elliptical one. Both prototypes are fabricated in Rexolite and measured in Ka band. A good agreement between the performance characteristics of the antennas is observed. The additional advantages of the proposed approach are explained, and its applicability for lens antennas made of high-k materials is discussed.
Published in:
Antennas and Propagation, IEEE Transactions on
(Volume:60
,
Issue:
12
)
Date of Publication: Dec. 2012
- Page(s):
- 5993 - 5998
- ISSN :
- 0018-926X
- INSPEC Accession Number:
- 13150458
- Digital Object Identifier :
- 10.1109/TAP.2012.2208931
- Product Type:
- Journals & Magazines
- Date of Publication :
- 16 July 2012
- Date of Current Version :
- 29 November 2012
- Issue Date :
- Dec. 2012
- Sponsored by :
- IEEE Antennas and Propagation Society
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