{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T02:52:59Z","timestamp":1774493579730,"version":"3.50.1"},"reference-count":27,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,3,16]],"date-time":"2021-03-16T00:00:00Z","timestamp":1615852800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Rede Nacional de Ensino e Pesquisa - RNP","award":["01250.075413\/2018-04"],"award-info":[{"award-number":["01250.075413\/2018-04"]}]},{"DOI":"10.13039\/501100001807","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de S\u00e3o Paulo","doi-asserted-by":"publisher","award":["2018\/22214-6"],"award-info":[{"award-number":["2018\/22214-6"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["429496\/2018-4"],"award-info":[{"award-number":["429496\/2018-4"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["305958\/2018-6"],"award-info":[{"award-number":["305958\/2018-6"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>We report on the design of a low-profile integrated millimeter-wave antenna for efficient and broadband circularly polarized electromagnetic radiation. The designed antenna comprises a chiral dielectric metasurface built with a 2\u00d72 arrangement of dielectric cylinders with slanted-slots at the center. A broadbeam high-gain with wide axial ratio (AR)&lt;3 dB bandwidth was reached by pairing the electric and magnetic resonances of the dielectric cylinders and the slanted slots when excited by an elliptically polarized driven-patch antenna. This electric-magnetic pairing can be tuned by varying the cylinders diameter and the tilting and rotation angles of the slanted slots. The simulation results indicate impedance-matching bandwidths up to 22.6% (25.3\u201331.6 GHz) with 3-dB AR bandwidths of 11.6% (26.9\u201330.2 GHz), which in terms of compactness (0.95\u03bb0\u00d70.95\u03bb0) and performance are superior to previous antenna designs. Since the simulations were performed by assuming materials and geometries easily implementable experimentally, it is hoped that circularly polarized antennas based on chiral metasurfaces can be integrated into 5G and satellite communications.<\/jats:p>","DOI":"10.3390\/s21062071","type":"journal-article","created":{"date-parts":[[2021,3,16]],"date-time":"2021-03-16T21:42:41Z","timestamp":1615930961000},"page":"2071","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Chiral Dielectric Metasurfaces for Highly Integrated, Broadband Circularly Polarized Antenna"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5186-8609","authenticated-orcid":false,"given":"Bruno","family":"Ferreira-Gomes","sequence":"first","affiliation":[{"name":"National Institute of Telecommunications (Inatel), Santa Rita do Sapuca\u00ed 37540-000, MG, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5399-5860","authenticated-orcid":false,"suffix":"Jr.","given":"Osvaldo N.","family":"Oliveira","sequence":"additional","affiliation":[{"name":"S\u00e3o Carlos Institute of Physics, University of S\u00e3o Paulo, P.O. Box 369, S\u00e3o Carlos 13560-970, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1742-9957","authenticated-orcid":false,"given":"Jorge Ricardo","family":"Mej\u00eda-Salazar","sequence":"additional","affiliation":[{"name":"National Institute of Telecommunications (Inatel), Santa Rita do Sapuca\u00ed 37540-000, MG, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"374","DOI":"10.1109\/LAWP.2015.2446505","article-title":"Metasurface Superstrate Antenna with Wideband Circular Polarization for Satellite Communication Application","volume":"15","author":"Wu","year":"2015","journal-title":"IEEE Antennas Wirel. Propag. 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