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Further, the addition of dielectric materials in ZnAl<jats:sub>2<\/jats:sub>O<jats:sub>4<\/jats:sub> improved its dielectric properties, which is promising for the realization of a microstrip patch antenna. This article reports the investigation of ZnAl<jats:sub>2<\/jats:sub>O<jats:sub>4<\/jats:sub>TiO<jats:sub>2<\/jats:sub> (ZAT) dielectric ceramic nanoparticles synthesized by the sol\u2013gel process. The X-ray diffraction analysis revealed the\u00a0crystalline\u00a0nature of the prepared\u00a0nanoparticles, with a tetragonal structure of anatase-, and rutile-TiO<jats:sub>2<\/jats:sub> phases coexisting with the cubic phase of ZnAl<jats:sub>2<\/jats:sub>O<jats:sub>4<\/jats:sub>. The estimated crystallite size of the dielectric ceramic is 13.3\u00a0nm. Transmission electron microscopy (TEM) micrographs demonstrated the spherical grains with their mean diameter of 14.75\u00a0nm, whereas the selected-area electron diffraction (SAED) pattern endorsed the crystallinity\u00a0of the sample. Raman measurement revealed the vibrational modes in accordance with the TiO<jats:sub>2<\/jats:sub> and ZnAl<jats:sub>2<\/jats:sub>O<jats:sub>4<\/jats:sub> compounds. The dielectric properties of the ZAT sample showed the dielectric permittivity in the range of 22.12\u201321.63, with its minimum loss from 0.056 to 0.041. Finally, a prototype\u00a0microstrip antenna was fabricated using the prepared nanoparticles, which demonstrated a return loss of\u2009\u2212\u200930.72\u00a0dB at the resonant frequency of 4.85\u00a0GHz with its bandwidth of 830\u00a0MHz.\n<\/jats:p>","DOI":"10.1038\/s41598-022-07899-6","type":"journal-article","created":{"date-parts":[[2022,3,10]],"date-time":"2022-03-10T11:06:26Z","timestamp":1646910386000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Synthesis and investigation of dielectric ceramic nanoparticles for microstrip patch antenna applications"],"prefix":"10.1038","volume":"12","author":[{"given":"Srilali","family":"Siragam","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. 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