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<p>We report Sr<sub>1−x</sub>Ba<sub>x</sub>TiO<sub>3</sub> (x = 0.0–0.4) nanoparticles synthesized by a tartrate-precursor combustion route and evaluate them for sub-6&#xa0;GHz dielectric resonator antennas (DRAs). Structural (XRD, FTIR), microstructural (SEM/TEM), ferroelectric (P–E), thermal-conductivity, and broadband microwave-dielectric (1–15&#xa0;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<sub>0.9</sub>Ba<sub>0.1</sub>TiO<sub>3</sub> 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 (|S<sub>11</sub>|<sub>min</sub> ≈ − 25 dB; VSWR &lt; 2), high realized gain, and stable radiation across 2.25–3.25&#xa0;GHz, demonstrating that composition-engineered SBTO is a practical option for 5G/early-6G front-ends.</p>

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Composition-engineered Sr1−xBaxTiO3 for high-efficiency dielectric resonator antennas in 5G/6G bands

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月14日

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  • 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

摘要

We report Sr1−xBaxTiO3 (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 Sr0.9Ba0.1TiO3 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.