A Compact Tri-band Slotted Planar Inverted-F Antenna Design for 5G and WLAN Mobile Handsets

Ashraf Sami; Hussein Mohammed Naser; Faiz Arith

doi:10.51173/eetj.v3i1.34

Authors

Ashraf Sami Department of Computer Engineering, College of Engineering, Al-Naji University, Baghdad, Iraq
Hussein Mohammed Naser Department of Computer Engineering, College of Engineering, Al-Naji University, Baghdad, Iraq
Faiz Arith Faculty of Electronic & Computer Engineering, University Technical Malaysia Melaka (UTeM), Durian Tunggal, Malaysia

DOI:

https://doi.org/10.51173/eetj.v3i1.34

Keywords:

5G Antenna, DGS, PIFA, Sub-6 GHz, Tri-band

Abstract

This paper presents a compact, tri-band Planar Inverted-F Antenna (PIFA) for 5G sub-6 GHz mobile handsets. The proposed design integrates a slotted G-shaped radiating patch and a defected ground structure (DGS) to achieve multiband operation within a low-profile, four-layer printed structure. The antenna resonates at 2.4 GHz, 3.7 GHz, and 5.7 GHz, effectively covering the 5G NR bands n41 and n78, alongside LTE and WLAN applications. Simulation results demonstrate wide bandwidths of 770 MHz, 400 MHz, and 600 MHz at the respective resonant frequencies, with a peak realized gain of 4.4 dBi. The antenna exhibits high radiation efficiency, a low specific absorption rate (SAR), and an omnidirectional pattern. With its compact dimensions and performance metrics that surpass existing designs, the proposed antenna is a compelling solution for modern 5G-enabled mobile phones.

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