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Low Profile Dual-Band Polarization Conversion Metasurface with Omnidirectional Polarization

Authors :
Jun-Jie Zhang
Wei-Xi Xu
Yu-Tong Zhao
Han-Yu Xie
Hao-Ran Zu
Bian Wu
Source :
Materials, Vol 16, Iss 12, p 4347 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

In this work, a dual-band transmissive polarization conversion metasurface (PCM), with omnidirectional polarization and low profile, is proposed. The periodic unit of the PCM is composed of three metal layers separated by two substrates. The upper patch layer of the metasurface is the patch-receiving antenna, while the bottom layer is the patch-transmitting antenna. Both antennas are arranged in an orthogonal way so that the cross-polarization conversion can be realized. The equivalent circuit analysis, structure design, and experimental demonstration are conducted in detail, the polarization conversion rate (PCR) is greater than 90% within two frequency bands of 4.58–4.69 GHz and 5.33–5.41 GHz, and the PCR at two center operating frequencies of 4.64 GHz and 5.37 GHz is as high as 95%, with a thickness of only 0.062λL, where λL is the free space wavelength at the lowest operating frequency. The PCM can realize a cross-polarization conversion, when the incident linearly polarized wave at an arbitrary polarization azimuth, which indicates that it has the characteristics of omnidirectional polarization.

Details

Language :
English
ISSN :
19961944
Volume :
16
Issue :
12
Database :
Directory of Open Access Journals
Journal :
Materials
Publication Type :
Academic Journal
Accession number :
edsdoj.3c162926014546e2812d8a0b033416bb
Document Type :
article
Full Text :
https://doi.org/10.3390/ma16124347