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In this work, the influence of the addition of Bi 2 O 3  on the dielectric properties in the microwave range of BiCu 3 Ti 3 FeO 12  (BCTFO) ceramic matrix and its potential application as a dielectric resonator antenna are analysed. X-ray diffraction shows that a reaction between BCTFO and Bi 2 O 3  occurs that results in the formation of new crystalline phases. The morphology of the samples is studied by field-emission scanning electron microscopy and demonstrates a dependence of the grain size on the Bi 2 O 3  content. From the Mössbauer spectroscopic analysis, it is found that the Fe 3+  ions replace the Ti 4+  in the crystalline structure. The addition of Bi 2 O 3  also reduces the dielectric permittivity ( ϵ r), dielectric loss (tan  δ ) and the coefficient of the resonance frequency (τ f ) values. Finally, numerical simulations are carried out in order to obtain the antenna parameters and they demonstrate that BCTFO could be a potential candidate for devices operating in the S-band.

Improving the microwave dielectric properties of BiCu 3 Ti 3 FeO 12 with the addition of Bi 2 O 3