A low-sintering temperature microwave dielectric ceramic for 5G LTCC applications with ultralow loss
| Autor: | Lingxia Li, Yu Zhan, Dong Wang, Mingkun Du |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Process Chemistry and Technology Sintering Dielectric Surfaces Coatings and Films Electronic Optical and Magnetic Materials Resonator Wireless communication systems Impurity visual_art Phase (matter) Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Composite material Microwave |
| Zdroj: | Ceramics International. 47:28675-28684 |
| ISSN: | 0272-8842 |
| Popis: | In next-generation mobile and wireless communication systems, low sintering temperature and excellent dielectric properties are synergistic objectives in the application of dielectric resonators/filters. In this work, Li2Ti0·98Mg0·02O2·96F0.04–1 wt% Nb2O5 (LTMN) ceramics were fabricated, and their sintering temperature was successfully lowered from 1120 °C to 750 °C by adjusting the mass ratio of B2O3–CuO (BC) additive. The optimum dielectric properties (ԑr ~ 24.44, Q × f ~ 60,574 GHz and τf ~ 22.8 ppm/°C) were obtained in BC-modified LTMN ceramics sintered at 790 °C. Even if their sintering temperature was lowered to 750 °C, the lowest temperature among the Li2TiO3-based dielectric ceramics currently used for LTCC technology, excellent dielectric properties (ԑr ~ 23.77, Q × f ~ 51,636 GHz) were still maintained. Additionally, no extra impurity phase was detected in BC-modified LTMN ceramics co-fired with Ag at 790 °C, indicating that BC-modified LTMN ceramics have a bright prospect in high-performance LTCC devices for 5G applications. |
| Databáze: | OpenAIRE |
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