Abstract
Ultra-low permittivity (εr：4–5) Mg2Al4–x(Ge0.5Mg0.5)xSi5O18 (0.12 ≤ x ≤ 0.28) and Mg2Al4–y(Mn0.5Mg0.5)ySi5O18 (0.1 ≤ y ≤ 0.3) cordierite ceramics were fabricated by solid-state reaction method. The improvement in [(Si4Al2)O18] hexahedral ring roundness significantly enhances the quality factor through the substitution of complex ionic pairs of Ge0.5Mg0.5/Mn0.5Mg0.5 for Al lattice sites in the [(Si4Al2)O18] hexahedral ring of these cordierite ceramics. Excellent microwave dielectric performances of Mg2Al3.8(Ge0.5Mg0.5)0.2Si5O18 and Mg2Al3.8(Mn0.5Mg0.5)0.2Si5O18 ceramics sintered at 1400 °C were demonstrated using the Hakki-Coleman resonant method with εr = 4.676, Q×f = 186, 503 GHz@13.659 GHz and 199,476 GHz @ 27.434 GHz, τf = −20.02 ppm/°C and εr = 4.807, Q×f = 101,420 GHz@13.662 GHz and 143,005 GHz @ 27.366 GHz, τf = −26.44 ppm/°C, respectively. These results present the potential application of high-quality cordierite in future B5G/6 G millimeter and terahertz communication frequency bands.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
