Enhanced performance of millimetre-wave dual-polarized antennas through reduced element spacing

Mohd Hamzah, Siti Zainab and Abdul Malek, Norun Farihah and Mohamad, Sarah Yasmin and Mohd. Isa, Farah Nadia and Mohd Ramly, Athirah (2025) Enhanced performance of millimetre-wave dual-polarized antennas through reduced element spacing. International Journal of Integrated Engineering, 17 (6). pp. 97-109. ISSN 2229-838X E-ISSN 2600-7916

PDF - Published Version Restricted to Registered users only Download (4MB) | Request a copy

Abstract

The increasing demand for higher data rates and better signal quality in 5G wireless networks has driven the advancement of dual-polarized antennas, which offer improved channel capacity and enhanced MIMO capabilities. Nevertheless, challenges such as achieving sufficient isolation, compact form factors, and effective beamforming remain, especially in millimeter-wave (mmWave) applications. This study introduces an enhanced single-layer, dual-polarized patch antenna with slant ±45° polarization, operating at 28 GHz. Designed to optimize performance while maintaining a compact structure, the antenna significantly reduces inter-element spacing — from approximately 57 mm to 15 mm. It is built on a Rogers RT5880 substrate and incorporates a T-power divider for efficient signal distribution. Both simulation and experimental results confirm improvements in reflection coefficient, radiation patterns, and gain compared to earlier designs. The antenna achieves a reflection coefficient of less than -10 dB, indicating strong performance, with measured gains ranging from 3.7 to 7.8 dBi. The revised radiation patterns display reduced sidelobe levels and a more directional main beam in the co-elevation azimuth plane, highlighting the effectiveness of the reduced spacing. These enhancements make the proposed design well-suited for 5G mmWave applications, particularly for beam-steering systems. Future developments can build on this work to further optimize performance in high-frequency wireless networks

Item Type:	Article (Journal)
Uncontrolled Keywords:	Millimetre-waves, dual-polarized, patch antenna, inter-elements spacing
Subjects:	T Technology > T Technology (General) > T10.5 Communication of technical information
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr Norun Abdul Malek
Date Deposited:	06 Aug 2026 10:32
Last Update:	06 Aug 2026 10:32
Queue Number:	2026-07-Q4480
URI:	http://irep.iium.edu.my/id/eprint/130468

Actions (login required)

View Item