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Abstract
A 3-D printable, planar, metal-dielectric metasurface-based, 2-D beam-steering system for aperture-type antennas is presented in this paper. This beam steering system, also known as the near-field meta-steering system, comprises two fully passive phase-gradient metasurfaces placed in the antenna’s nearfield region to steer the radiation beam. To address the non-uniform electric field phase of the aperture antenna, phase correction is also incorporated into the bottom metasurface placed on top of the antenna aperture in its near-field to enhance the far-field radiation of the antenna. Near-field phase transformation and phased array antenna theory concepts are applied to design the proposed metasurfaces. Two types of metal-dielectric unit cells are implemented to provide a phase range of 360◦ . The height of each metasurface is only 6.25 mm (0.25λ0), and the height of the whole system is only 1.56 λ0 at 12 GHz. The proposed beam steering system with a resonant cavity antenna can steer the beam to a maximum of ±44◦ in the elevation plane and 360◦ in the azimuth plane with only a 1.4 dB deviation in directivity over the full steering range.
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Authors (5)
-
Md Yeakub Ali
-
Ali Lalbakhsh
-
Khushboo Singh
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
IEEE Access
no. 12,
pages 165143 - 165154,
ISSN: 2169-3536 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Ali M. Y., Lalbakhsh A., Singh K., Kozieł S., Gołuński Ł.: 3-D Printable Metal-Dielectric Metasurface for Risley Prism-Based Beam-Steering Antennas// IEEE Access -Vol. 12, (2024), s.165143-165154
- DOI:
- Digital Object Identifier (open in new tab) 10.1109/access.2024.3493426
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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