A Wideband High Gain Transmit‐Array Antenna Exploiting Polarization‐Rotated Metasurface Cell

ABSTRACT A novel polarization‐insensitive transmit‐array (TA) antenna using linear polarization‐rotated (PR) metasurface (MS) unit cells has been proposed in this article. Firstly, we design a wideband polarization‐insensitive polarization‐rotated MS unit cell. The MS cell can provide high transmiss...

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Bibliographic Details
Published in:Microwave and optical technology letters 2024-12, Vol.66 (12), p.n/a
Main Authors: Zhang, Yamei, Xu, Feng, Qiang, Jingxia, Liu, Shui, Xie, Qi
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna design
Antennas
Apertures
Broadband
broadband antenna
Design standards
High gain
Incident waves
Linear polarization
metasurface (MS)
Metasurfaces
phase compensation
polarization rotated (PR)
Radar detection
Stability
transmit‐array (TA) antenna
Unit cell
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Summary:ABSTRACT A novel polarization‐insensitive transmit‐array (TA) antenna using linear polarization‐rotated (PR) metasurface (MS) unit cells has been proposed in this article. Firstly, we design a wideband polarization‐insensitive polarization‐rotated MS unit cell. The MS cell can provide high transmission for incident linear polarized waves with polarization rotation by 90°. Then, we investigate the stability of the MS cell under the oblique incident wave. The proposed MS cell keeps a stable response under oblique incident wave over ± 30°. To verify the excellent performance of the proposed MS. We design a high‐gain TA antenna consisting of a standard feed horn and an aperture with a gradient phase. The gradient phase compensation is provided by varying the geometric dimension of the proposed MS. The obtained TA antenna works in a wide band with high gain. We fabricated the aperture and set up a prototype of TA antenna to verify our work. We measure the TA antenna and the results show a wide operating band from 14.2 to 18 GHz with a pick gain of 23.9 dBi. The favorable performance of the TA antenna is a good candidate in satellite systems and long‐distance satellite system. Furthermore, the angular stability of the MS cell is also verified by realizing the beam scanning performance. An over ± 30° scan range is obtained. Good beam scanning can be used in radar detection and expand signal coverage.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.70049