Composition-engineered Sr_1-xBa_xTiO₃ for high-efficiency dielectric resonator antennas in 5G/6G bands.

Authors

Moustafa A Darwish, F Fakhry, Marwa M Hussein, Yousef M Abd El-Maboud, Enas H El-Ghazzawy, Anwer S Abd El-Hameed, Asmaa I Afifi, Sherif G Elsharkawy, M M Salem

Published in

Scientific reports. Jul 14, 2026. Epub Jul 14, 2026.

Abstract

We report Sr_1-xBa_xTiO₃ (x = 0.0-0.4) nanoparticles synthesized by a tartrate-precursor combustion route and evaluate them for sub-6 GHz dielectric resonator antennas (DRAs). Structural (XRD, FTIR), microstructural (SEM/TEM), ferroelectric (P-E), thermal-conductivity, and broadband microwave-dielectric (1-15 GHz) characterizations identify x = 0.1 as the composition with the best balance of moderate effective permittivity, low loss, and stable GHz dispersion. A cylindrical DRA is then designed with Sr_0.9Ba_0.1TiO₃ as the matching layer between a Rogers 6010 resonator and a Rogers 4003 feed/ground laminate, and benchmarked against identical-geometry FR-4 and Rogers TMM4 matching layers. Simulated and measured S-parameters confirm efficient impedance matching (|S₁₁|_min ≈ - 25 dB; VSWR < 2), high realized gain, and stable radiation across 2.25-3.25 GHz, demonstrating that composition-engineered SBTO is a practical option for 5G/early-6G front-ends.

PMID:
42443250
Bibliographic data and abstract were imported from PubMed on 14 Jul 2026.

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