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The proposed MIMO design has a very low profile of 30\u2009\u00d7\u200920\u2009\u00d7\u20091.6\u2009mm<jats:sup>3<\/jats:sup>. The proposed antenna is carefully designed and optimized using HFSS simulation software. As a proof of concept, the proposed design is realized and experimentally tested for MIMO applications. The proposed structure, printed on an FR4 substrate, comprises two symmetrical elliptical conductive patches on the upper side and a modified ground plane on the lower one. Each radiating element includes six elliptical rings. The modified ground plane consists of a T\u2010shaped strip and two semielliptical slots etched opposite the feed line. All the parameters of the design are carefully optimized to achieve an ultrawide bandwidth antenna spanning from (136.08%) 3.1 to 16.3\u00a0GHz. The results are discussed and analyzed in terms of bandwidth, gain, efficiency, radiation pattern, diversity gain, envelope correlation coefficient (ECC), total active reflection coefficient (TARC), and mean effective gain (MEG). All simulated results are found to be in good accordance with experiments. The design reveals attractive features for UWB applications. A good isolation (17\u2009dB) between the two radiators is achieved despite the close proximity using the suggested ground plane geometry.<\/jats:p>","DOI":"10.1002\/dac.5557","type":"journal-article","created":{"date-parts":[[2023,6,21]],"date-time":"2023-06-21T01:39:56Z","timestamp":1687311596000},"update-policy":"https:\/\/2.zoppoz.workers.dev:443\/https\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Miniaturized six\u2010ring elliptical monopole\u2010based MIMO antenna for ultrawideband applications"],"prefix":"10.1002","volume":"36","author":[{"given":"A.","family":"Amroun","sequence":"first","affiliation":[{"name":"Laboratoire d'Electronique de puissance et commande industrielle (LEPCI), Department of Electronics University of Ferhat Abbas  S\u00e9tif Algeria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Zebiri","sequence":"additional","affiliation":[{"name":"Laboratoire d'Electronique de puissance et commande industrielle (LEPCI), Department of Electronics University of Ferhat Abbas  S\u00e9tif Algeria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Djamel","family":"Sayad","sequence":"additional","affiliation":[{"name":"Laboratoire d'Electrotechnique de Skikda (LES) University 20 Aout 1955\u2010Skikda  Skikda Algeria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/2.zoppoz.workers.dev:443\/https\/orcid.org\/0000-0002-0440-8025","authenticated-orcid":false,"given":"Issa T. 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