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arXiv · 2405.08910

Investigation of BaTiO$_3$-NiO composite as compact Dielectric Resonator Antenna

Prithwiraj Ganguly·Vince Kumar·P. Maneesha·Saptarshi Ghosh·Somaditya Sen
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Abstract

A compact dielectric resonator antenna has been fabricated on a microstrip transmission line for the purpose of C-band wireless communication using a ceramic material made out of a sintered mixture of BTO and NiO. The antenna parameters are optimized using Ansys HFSS software and verified experimentally. Ni replaces both Ba at A site and Ti at B site. Such a solid solution has a limit depending on the amount of NiO provided during sintering. A complete study of the structural changes and the dielectric constant enables the correlation with the resonating property. All the samples retain the ferroelectric tetragonal P4mm phase with a nominal decrease in the c/a ratio. NiO incorporation in BTO decreases the sintering temperature and shows two types of morphology associated with BTO-like and NiO-like phases. It induces prominent reduction in the permittivity and loss tangent (<0.01) in the range 100Hz to 1MHz. These properties make these samples suitable for DRA application in the C-Band range [4-8 GHz]. Experimental and theoretical assessment using HFSS software yields a C-band signal at ~7.27 GHz.

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Prithwiraj Ganguly, Vince Kumar, P. Maneesha, Saptarshi Ghosh, Somaditya Sen. 2024-10-14. Investigation of BaTiO$_3$-NiO composite as compact Dielectric Resonator Antenna. https://arxiv.org/abs/2405.08910

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