A Wideband GRIN Dielectric Lens Antenna for 5G Applications

Autor: Khaled Aljaloud, Yosef T. Aladadi, Majeed A. S. Alkanhal, Wazie M. Abdulkawi, Rifaqat Hussain
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Micromachines, Vol 14, Iss 5, p 997 (2023)
Druh dokumentu: article
ISSN: 2072-666X
DOI: 10.3390/mi14050997
Popis: This paper proposes a graded effective refractive indexes (GRIN) dielectric lens for 5G applications. The inhomogeneous holes in the dielectric plate are perforated to provide GRIN in the proposed lens. The constructed lens employs a collection of slabs that correspond to the specified graded effective refractive index. The thickness and the whole lens dimensions are optimized based on designing a compact lens with optimum lens antenna performance (impedance matching bandwidth, gain, 3 dB beamwidth, and sidelobe level). A wideband (WB) microstrip patch antenna is designed to be operated over the entire band of interest from 26 GHz to 30.5 GHz. For the 5G mm-wave band of operation, the behavior of the proposed lens along with a microstrip patch antenna is analyzed at 28 GHz for various performance parameters, including impedance matching bandwidth, 3 dB beamwidth, maximum gain, and sidelobe level. It has been observed that the antenna exhibits good performance over the entire band of interest in terms of gain, 3 dB beamwidth, and sidelobe level. The numerical simulation results are validated using two different simulation solvers. The proposed unique and innovative configuration is well-suited for 5G high gain antenna solutions with a low-cost and lightweight antenna structure.
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