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Dual-band miniaturized quarter-mode substrate integrated waveguide antennas for 5G terminal applications

Published online by Cambridge University Press:  29 May 2025

Le Zhang ,
Miao-Peng Shen ,
Xin Geng ,
Wen-Wen Yang Open the ORCID record for Wen-Wen Yang [Opens in a new window] ,
Jian-Xin Chen Open the ORCID record for Jian-Xin Chen [Opens in a new window]  and
Xu Yang Open the ORCID record for Xu Yang [Opens in a new window]
Le Zhang
Affiliation:
School of Information Science and Technology, Nantong University, Nantong, China
Miao-Peng Shen
Affiliation:
School of Information Science and Technology, Nantong University, Nantong, China
Xin Geng
Affiliation:
School of Information Science and Technology, Nantong University, Nantong, China
Wen-Wen Yang*
Affiliation:
School of Information Science and Technology, Nantong University, Nantong, China
Jian-Xin Chen
Affiliation:
School of Information Science and Technology, Nantong University, Nantong, China
Xu Yang
Affiliation:
School of Information Science and Technology, Nantong University, Nantong, China
*
Corresponding author: Wen-Wen Yang; Email: wwyang2008@hotmail.com
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Abstract

This paper presents a low-profile miniaturized dual-band antenna utilizing the quarter-mode substrate integrated waveguide (QMSIW) structure. The two modes of TE110 and TE220 of a single QMSIW structure are employed, enabling a dual-band operation. The frequency ratio between the two bands can be tuned by loading a capacitive structure, which is comprised of a capacitive-loaded patch and a short circuit post, inside the QMSIW structure. By introducing parasitic QMSIW structures through magnetic coupling, a dual-band antenna with enhanced bandwidths is achieved. The antenna has dimensions of smaller than 400 mm2 (0.048λL2) with a uniform height of 1.4 mm (0.016λL). Measurement results indicate that the −6 dB impedance bandwidths of the antennas can cover the 5G N78 (3.3–3.6 GHz) and N79 (4.8–5 GHz) bands, and the average efficiencies is better than −2.5 dB. To the authors’ knowledge, the proposed designs offer dual-wideband operation while having the smallest planar dimension compared to the previously reported antennas. Furthermore, an extended electric coupling dual-band antenna configuration is also described and measured, which achieves similar bandwidth extension as the proposed antenna.

Keywords

dual-bandlow profileminiaturizedparasitic structuresubstrate integrated waveguide

Information

Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 17 , Issue 4 , May 2025 , pp. 701 - 709
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Copyright
© The Author(s), 2025. Published by Cambridge University Press in association with The European Microwave Association.

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