Bandwidth Enhancement of Bow-tie Microstrip Patch Antenna Using Defected Ground Structure for 5G

A microstrip antenna suffers from a narrow bandwidth because of the thickness of the substrate. This paper presents a wideband microstrip antenna by using Defected Ground Structure (DGS) on a bow-tie microstrip patch antenna. The cross-dumbbell shaped slot is used as DGS on the ground layer. The cro...

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Bibliographic Details
Published inJournal of communications pp. 995 - 1002
Main Authors Astuti, Dian Widi, Fadilah, Rizki, Muslim, Muslim, Rusdiyanto, Dian, Alam, Syah, Wahyu, Yuyu
Format Journal Article
LanguageEnglish
Published 2022
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Summary:A microstrip antenna suffers from a narrow bandwidth because of the thickness of the substrate. This paper presents a wideband microstrip antenna by using Defected Ground Structure (DGS) on a bow-tie microstrip patch antenna. The cross-dumbbell shaped slot is used as DGS on the ground layer. The cross-dumbbell DGS slot is put on the backside of the transmission line. The antenna is designed using Computer Simulation Technology (CST) microwave studio and on the commercially printed circuit board substrate, i.e., the FR-4 substrate. The antenna is set for 5G applications, which use 3.67 GHz as the frequency center. By using DGS, the simulated reflection coefficient (S11) for VSWR ≤ 2 shows the fractional bandwidth increase from 2.6% to 10.45%. The measured reflection coefficient matches the simulated results where the measurement gives 13.37% for fractional bandwidth.
ISSN:2374-4367
DOI:10.12720/jcm.17.12.995-1002