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Multibeam characteristics of a negative refractive index shaped lens

Hamid, S.A. and Rahman, N.H.A. and Yamada, Y. and van Hung, P. and Quoc, D.N. (2020) Multibeam characteristics of a negative refractive index shaped lens. Sensors (Switzerland), 20 (19): 5703. pp. 1-17. ISSN 14248220

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Abstract

Narrow beam width, higher gain and multibeam characteristics are demanded in 5G technology. Array antennas that are utilized in the existing mobile base stations have many drawbacks when operating at upper 5G frequency bands. For example, due to the high frequency operation, the antenna elements become smaller and thus, in order to provide higher gain, more antenna elements and arrays are required, which will cause the feeding network design to be more complex. The lens antenna is one of the potential candidates to replace the current structure in mobile base station. Therefore, a negative refractive index shaped lens is proposed to provide high gain and narrow beamwidth using energy conservation and Abbe’s sine principle. The aim of this study is to investigate the multibeam characteristics of a negative refractive index shaped lens in mobile base station applications. In this paper, the feed positions for the multibeam are selected on the circle from the center of the lens and the accuracy of the feed position is validated through Electromagnetic (EM) simulation. Based on the analysis performed in this study, a negative refractive index shaped lens with a smaller radius and slender lens than the conventional lens is designed, with the additional capability of performing wide-angle beam scanning. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Article
Divisions: Faculties > Faculty of Radio-Electronic Engineering
Identification Number: 10.3390/s20195703
Uncontrolled Keywords: 5G mobile communication systems; Antenna arrays; Antenna feeders; Base stations; Lens antennas; Conventional lens; Current structure; Feeding networks; G-frequency band; High frequency operation; Mobile base station; Negative refractive index; Wide angle beam scanning; Refractive index; article; energy conservation; refraction index; simulation
Additional Information: Language of original document: English. All Open Access, Gold, Green.
URI: http://eprints.lqdtu.edu.vn/id/eprint/8918

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