Compact, gain-enhanced 5G mmWave antenna with metallic ground-backed reflector for high-speed railway communication systems

Mohammed, Dunya Zeki and Al Gburi, Ahmed Jamal Abdullah (2025) Compact, gain-enhanced 5G mmWave antenna with metallic ground-backed reflector for high-speed railway communication systems. High-speed Railway. pp. 1-12. ISSN 2097-3446

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Abstract

This research presents a compact, high-gain millimeter-wave antenna tailored for reliable 5 G communication in high-speed railway environments. The proposed antenna supports dual-band operation at 28 GHz (n257/n258) and 38 GHz (n260), enabling robust Vehicle-to-Infrastructure (V2I) links required for next-generation railway systems. The radiator occupies only 12 mm × 8 mm on a Rogers 6010LM substrate (εᵣ = 10.2, h = 0.64 mm). A Metallic Ground-Backing (MGB) reflector, positioned 9 mm behind the patch—λ/4 at 28 GHz—enhances forward radiation, suppresses back-lobes, and ensures highly directional coverage along railway tracks. The antenna achieves measured peak gains of 7.96 dBi at 28 GHz and 8.20 dBi at 38 GHz, with excellent impedance matching and stable radiation patterns under mobility scenarios. Its unique combination of compact footprint, reflectoraided gain enhancement, and stable dual-band performance under dynamic conditions distinguishes it from conventional millimeter-wave solutions, making it a strong candidate for 5G-based high-speed railway communication modules and arrays.

Item Type:	Article
Uncontrolled Keywords:	Millimeter-wave antenna, Metallic ground backing reflector, Gain enhanced, 28/38 GHz, Compact, High-speed railway
Divisions:	Faculty Of Electronics And Computer Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	27 Oct 2025 07:16
Last Modified:	27 Oct 2025 07:16
URI:	http://eprints.utem.edu.my/id/eprint/29046
Statistic Details:	View Download Statistic

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