Abstract
Glass ceramics obtained via a true glassy phase are homogeneous and pore free, which makes them interesting for electronic applications, especially in the GHz frequency range. We discuss the glass-ceramic system with Ba4Al2Ti10O27 as the main crystalline phase and show material properties, including dielectric properties measured up to 110 GHz. Application examples are shown for filters and antennas in the GHz frequency range. The extremely high material homogeneity makes very precise manufacturing possible and enables MHz accuracy and reproducibility in GHz applications. The high linearity of the material properties is shown as well and makes high power applications, e.g., in cell phone base stations, possible. Also, applications in the MHz range are discussed.
Highlights
Glass ceramics obtained via a true glassy phase are homogeneous and pore free, which makes them interesting for electronic applications, especially in the GHz frequency range
We discuss the glass-ceramic system with Ba4Al2Ti10O27 as the main crystalline phase and show material properties, including dielectric properties measured up to 110 GHz
Note that the breakdown strength is strongly dependent on experimental conditions, ramp-up times, sample geometry, and especially, sample thickness
Summary
ABSTRACT Glass ceramics obtained via a true glassy phase are homogeneous and pore free, which makes them interesting for electronic applications, especially in the GHz frequency range. We discuss the glass-ceramic system with Ba4Al2Ti10O27 as the main crystalline phase and show material properties, including dielectric properties measured up to 110 GHz. Application examples are shown for filters and antennas in the GHz frequency range.
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