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Employing fractal\u2010shaped antennas have allowed us to accomplish all these actions, which request compact, conformal, and broadband high performance devices. Antennas derived from Koch\u2019s curve fractals are studied. In order to implement PPDR communications in 5G technology, frequency bandwidths of importance have been carefully selected and properly included in the antenna developments under MATLAB environment. Important information necessary for antenna designers, such as 360 degrees directivity at various frequencies, the impedance (resistance and reactance) along the bandwidth of interest, as well as voltage standing wave ratio (VSWR) along the bandwidth of interest for dipole, one\u2010iteration, and two\u2010iteration Koch\u2019s curves, respectively, have been obtained. The characteristic of directivity at selected frequencies is also highlighted. In order to maximize antenna parameters, this study has successfully proposed using fractal antennas, objects that use self\u2010similarity property of fractals for optimum operation in several frequency ranges. For the studied antennas, we have obtained the following results regarding the maximum gains in dBi (which is the unit of the ratio between the gains of the antenna compared to the gain of an isotropic antenna). For the dipole antennas, the gains are 2.73\u2009dBi and 4.76\u2009dBi at 460\u2009MHz and 770\u2009MHz, respectively. The gains for one\u2010iteration fractal Koch antenna are 6.91\u2009dBi and 4.51\u2009dBi at 460\u2009MHz and 770\u2009MHz, respectively, and finally, for two\u2010iteration fractal Koch antenna, the gains are 4.91\u2009dBi and 3.28\u2009dBi at 460\u2009MHz and 770\u2009MHz, respectively. Moreover, the impedance along the bandwidth is approximately 360 Ohms for two\u2010iteration fractal Koch antenna, 180 Ohms for one\u2010iteration fractal Koch antenna, and 140 Ohms for dipole antenna, respectively.<\/jats:p>","DOI":"10.1155\/2021\/9451730","type":"journal-article","created":{"date-parts":[[2021,6,19]],"date-time":"2021-06-19T16:50:05Z","timestamp":1624121405000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["On the 5G Communications: Fractal\u2010Shaped Antennas for PPDR Applications"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9099-4608","authenticated-orcid":false,"given":"Mihai-Virgil","family":"Nichita","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2088-7457","authenticated-orcid":false,"given":"Maria-Alexandra","family":"Paun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3352-9595","authenticated-orcid":false,"given":"Vladimir-Alexandru","family":"Paun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3761-380X","authenticated-orcid":false,"given":"Viorel-Puiu","family":"Paun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,6,19]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"crossref","unstructured":"NichitaM. 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