An investigation of microwave dielectric properties of BaZr0.25Ti0.75O3 and performance of DRA for 5G application

• Published in: Journal of materials science. Materials in electronics Vol. 35; no. 2; p. 167
• Main Authors: Mohapatra, S., Badapanda, T., Tripathy, Satya N.
• Format: Journal Article
• Language: English
• Published: New York Springer US 2024; Springer Nature B.V
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composition; Dielectric loss; Dielectric properties; Frequency ranges; Input impedance; Materials Science; Optical and Electronic Materials; Parameters; Permittivity; Radio antennas; Resonant frequencies; Resonators; Rietveld method; Simulation; Temperature dependence
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-024-11937-6

BaZr 0.25 Ti 0.75 O 3 ceramic’s structural, microstructural, and dielectric performances in the microwave region are illustrated in the current work for its prospective use in dielectric resonator antennas at the 5G frequency. Making the BaZr 0.25 Ti 0.75 O 3 composition involved using the standard solid-state method. The phase was discovered by the X-ray diffraction process, proving a cubic symmetry to exist in the composition. The Rietveld refinement method was used to obtain the structural parameters. The BaZr 0.25 Ti 0.75 O 3 ceramic's microstructural shape shows a clearly defined, dense grain. Measurements of the prepared sample's microwave dielectric properties were made across the frequency range of 1 to 10 GHz. Around 2–5 GHz, it is discovered that the relative permittivity and dielectric loss are mainly stable and change with frequency. The quality factor (Q × f) and temperature coefficient of resonant frequency (τ f ), which are the dielectric factors in the microwave area, were computed using the conventional formula. The temperature-dependent dielectric properties have been used to compute the permittivity's temperature coefficient. HFSS software has been used to investigate the simulated performance of dielectric resonator antennas (DRA)-based on BaZr 0.25 Ti 0.75 O 3 ceramic. The simulated S11 parameter that was obtained exhibits superior return loss and excellent efficiency at 3.3 GHz. We have shown the input impedance, gain, and radiation pattern at ϕ  = 0° and ϕ  = 90°. It has been shown how the electric and magnetic fields are distributed in DRA. Furthermore, the simulated result has been used to obtain the bandwidth, VSWR, and mismatch loss.