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Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015)
Guest editors: Fumio Kojima, Futoshi Kobayashi and Hiroyuki Nakamoto
Article type: Research Article
Authors: Itoh, Keiichia; * | Watanabe, Kentoa | Miyata, Katsumasaa | Igarashi, Hajimeb
Affiliations: [a] Department of Electrical and Computer Engineering, Akita National College of Technology, Akita, Japan | [b] Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan
Correspondence: [*] Corresponding author: Keiichi Itoh, Department of Electrical and Computer Engineering, Akita National College of Technology, 1-1,Iijima-Bunkyo-cho, 011-8511, Akita, Japan. E-mail:[email protected]
Abstract: This paper reports the performance improvement of the planar waveguide slot array antenna by loading the small spherical dielectric lenses. The proposed lens is sphere and small, and can be loaded on each slot independently. To design the antenna with the proposed lenses, other design parameters are fixed, and the optimal slot length is searched by using the finite difference time domain (FDTD) method. From both the calculated and the measured far-field radiation patterns, the optimized antenna with the proposed lenses shows good performance as the resonant uniformly distribution array. By comparing with the conventional antenna, it is found that the gain increase by loading small lens is estimated by 1.07 dB.
Keywords: Dielectric lens, planar array antenna, FDTD method, waveguide slot antenna
DOI: 10.3233/JAE-162047
Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 1-2, pp. 623-630, 2016
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