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The four elements have a rectangular radiator with curved edges and a partial ground plane with an etched slot to enlarge the bandwidth of the suggested structure to operate from 3 up to 12\u00a0GHz with S<jats:sub>11<\/jats:sub>\u2009\u2264\u2009\u2212\u200910\u00a0dB. The high isolation between elements was achieved by forming the antennas orthogonally without adding decoupling elements to simplify the design. The suggested design has a size of 47\u2009\u00d7\u200947\u00a0mm<jats:sup>2<\/jats:sup> placed on low price FR4 substrate. A simple slot is etched into the radiator to achieve the desired band rejection. The simulated and tested outcomes achieved operated band extended from 3 up to 12\u00a0GHz with band rejection feature within 3.3 \u00a0GHz up to 4.3\u00a0GHz to eliminate interference with WIMAX applications and high isolation of more than 22\u00a0dB between ports. Also, the antenna fulfills peak gain of 3.5 dBi, envelope correlation coefficient(ECC)\u2009&lt;\u20090.005, diversity gain (DG) 9.98\u00a0dB and channel capacity loss (CCL)\u2009&lt;\u20090.4 bit\/s\/Hz within the operating bands. The outcomes have good consistency which made the suggested antenna to be used in UWB MIMO systems.<\/jats:p>","DOI":"10.1007\/s11276-022-03019-4","type":"journal-article","created":{"date-parts":[[2022,6,28]],"date-time":"2022-06-28T03:29:26Z","timestamp":1656386966000},"page":"3143-3155","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["UWB MIMO antenna with 4-element, compact size, high isolation and single band rejection for high-speed wireless networks"],"prefix":"10.1007","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7122-0770","authenticated-orcid":false,"given":"Ahmed A.","family":"Ibrahim","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohamed Fathy","family":"Abo Sree","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,6,28]]},"reference":[{"key":"3019_CR1","unstructured":"First Report and Order. 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