{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T00:49:54Z","timestamp":1760057394182,"version":"build-2065373602"},"reference-count":30,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,2,10]],"date-time":"2025-02-10T00:00:00Z","timestamp":1739145600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Guangdong Ocean University","award":["060302112314","060302112317","KJ20241046"],"award-info":[{"award-number":["060302112314","060302112317","KJ20241046"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Through comprehensive research on the working principles of the generalized Snell\u2019s law, this paper presents a quasi-metasurface based on the theory of wavefront difference. The proposed structure successfully demonstrates the vortex manipulation of both linearly polarized waves and circularly polarized waves. The symmetrical metallic column design modulates the phase of one period at 18 GHz with a reflection loss of less than \u22120.5 dB. By decomposing circularly polarized waves into a set of mutually orthogonal linearly polarized waves with a phase difference of \u03c0\/2, a simple synthesis method is proposed to convert existing linearly polarized waves into circularly polarized waves, thereby demonstrating vortex wave effects. The quasi-metasurface exhibits excellent performance, and the vortex characteristics of both linearly and circularly polarized waves are verified through simulations.<\/jats:p>","DOI":"10.3390\/sym17020274","type":"journal-article","created":{"date-parts":[[2025,2,11]],"date-time":"2025-02-11T11:01:08Z","timestamp":1739271668000},"page":"274","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Simultaneous Generation of Linear- and Circular-Polarization Vortex Based on Symmetrical Metallic Quasi-Metasurface"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9808-3419","authenticated-orcid":false,"given":"Daoheng","family":"Zhu","sequence":"first","affiliation":[{"name":"School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China"}]},{"given":"Xiaokun","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Software, Jiangxi Agricultural University, Nanchang 330045, China"}]},{"given":"Lingbo","family":"Han","sequence":"additional","affiliation":[{"name":"School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China"}]},{"given":"Jian","family":"Yan","sequence":"additional","affiliation":[{"name":"School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1179","DOI":"10.1016\/j.aeue.2024.155186","article-title":"An orbital angular momentum metasurface antenna with broadband radar cross section reduction","volume":"177","author":"Chen","year":"2024","journal-title":"Int. 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