STUDYING A METHOD TO DESIGN AN ANTENNA OPERATING  AT DUAL-BAND FOR 5G APPLICATIONS BY COMBINING FRACTAL GEOMETRY AND METAMATERIALS

Cao Thành Nghĩa; Cái Thanh Tân; Hoàng Văn Thực

doi:10.34238/tnu-jst.7911

STUDYING A METHOD TO DESIGN AN ANTENNA OPERATING AT DUAL-BAND FOR 5G APPLICATIONS BY COMBINING FRACTAL GEOMETRY AND METAMATERIALS

About this article

Received: 10/05/23 Revised: 13/07/23 Published: 13/07/23

Authors

1. Cao Thanh Nghia , Vinh University
2. Cai Thanh Tan, Vinh University
3. Hoang Van Thuc, TNU – University of Information and Communication Technology

Abstract

This paper presents a method to design an antenna that operates in two bands 28 GHz and 38 GHz for 5G applications. The antenna configuration consists of a patch of modified fractal geometry combined with metamaterial structures that are split ring resonators arranged around the radiation component as a metasurface. The antennas were investigated and designed on a Rogers RT/duroid 5880 substrate with a dielectric constant of 2.2, the loss tangent of 0.0009, and a height of 0.6 mm, which are fed by a probe. HFSS software is used to simulate antenna configuration and operation. Compared with the original circular microstrip antenna, the proposed antenna operates in two bands with a bandwidth in the f₁= 28 GHz band of BW₁= 2.35 GHz and a second band in the f₂= 38 GHz of BW₂ =8.45 GHz. Besides, the proposed antenna gain is also significantly increased 8.29 dBi. Physical models of the antenna were fabricated and measured to verify the correctness of the design.

Keywords

Microstrip antenna; Fractal geometry; Metamaterials; 5G applications; Dual-band

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DOI: https://doi.org/10.34238/tnu-jst.7911

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