ORIGINAL RESEARCH article
Front. Antennas Propag.
Sec. Antennas Array
Volume 3 - 2025 | doi: 10.3389/fanpr.2025.1585028
This article is part of the Research TopicThe Role of Switches in Improving Antenna Functionality, Efficiency, Versatility, and Diversity in ApplicationsView all articles
A Metal-Dielectric 3D-Printable Metastructure for the Radiation Enhancement of Electromagnetic Band-Gap Resonator antennas
Provisionally accepted
- 1Macquarie University, Sydney, New South Wales, Australia
- 2University of Technology Sydney, Sydney, Australia
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This article introduces a planar, highly transmissive, 3-D printable metastructure with a low profile for enhancing the far-field radiation performance of conventional electromagnetic band-gap (EBG) resonator antennas. The proposed near-field phase transforming metastructure (PTM) is developed by employing the near-field phase transformation approach that transforms the non-uniform phase of a conventional EBG resonator antenna into a nearly uniform one and enhances the far-field radiation pattern. The novelty of this paper lies in reducing the height of the phase-transforming structure compared to state-of-the-art structures with better performance. The metastructure's low profile is realized by incorporating metal inside the dielectric materials.The proposed PTM comprises two types of unit cells made of metal and dielectric material to achieve a wide range of phase coverage. All the phase transforming unit cells used are highly transmitting as their transmission coefficient (|S 21 |) is greater than -0.77 dB, which increases the aperture efficiency compared to previous designs. Additionally, the proposed metastructure is fully passive and polarization-independent. To achieve the desired performance, the PTM can be realized by using additive manufacturing technologies and exploiting RF-graded 3-D printing filament. The proposed metastructure-based wide-band EBG resonator antenna achieves a peak directivity, aperture efficiency, and 3 dB directivity bandwidth of 21.4 dBi, 54.65%
Keywords: Electromagnetic Band-Gap Resonator Antennas, Metastructure, Near-field Phase Corrections, far-field radiation, Dominant, antenna
Received: 28 Feb 2025; Accepted: 24 Apr 2025.
Copyright: © 2025 Ali, Lalbakhsh, Singh, Taheri and Mukhopadhyay. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Md. Yeakub Ali, Macquarie University, Sydney, 2109, New South Wales, Australia
Khushboo Singh, University of Technology Sydney, Sydney, Australia
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