A wide‐angle scanning Luneburg lens antenna

The Luneburg lens is an effective way to implement multibeam antennas. However, the existing planar Luneburg lens configuration usually can only provide a relatively narrow scanning range. To deal with this problem, a Luneburg lens consisting of one dielectric cylinder and nine dielectric rings is p...

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Bibliographic Details
Published inInternational journal of RF and microwave computer-aided engineering Vol. 32; no. 6
Main Authors Zheng, Yixuan, Ma, Chaojun, Zheng, Shaoyong, Yang, Nan
Format Journal Article
LanguageEnglish
Published Hoboken, USA John Wiley & Sons, Inc 01.06.2022
Hindawi Limited
Subjects
Antenna gain
Electric dipoles
lens antenna
Lens antennas
Luneburg lens
Metal plates
Multibeam antennas
multiple beams
Scanning
Three dimensional printing
wide‐angle scanning
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Summary:The Luneburg lens is an effective way to implement multibeam antennas. However, the existing planar Luneburg lens configuration usually can only provide a relatively narrow scanning range. To deal with this problem, a Luneburg lens consisting of one dielectric cylinder and nine dielectric rings is proposed. It can be easily fabricated using low cost ABS material through 3D printing technology. The lens is placed between two metal plates which have an additional flare structure to enhance the antenna gain. To effectively excite the lens for multibeam applications, 9 magneto electric dipoles are utilized. For validation, a wide‐angle scanning planar Luneburg lens antenna operating at 35 GHz was designed, fabricated and measured. A good agreement between simulation and measurement can be observed. At the center frequency, a wide scanning coverage of 172° can be obtained with a gain variation less than 1.6 dB.
Bibliography:Funding information
National Natural Science Foundation of China
ISSN:1096-4290
1099-047X
DOI:10.1002/mmce.23143