Study and Fabrication of Calcium Strontium Titanate Dielectric Materials and Components for Wireless Communication System Applications
| Autor: | Chen, Yu Chuan, 陳昱全 |
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| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 There are two main subjects in this dissertation. The first part is developed the (Ca0.2Sr0.8)3(AxTi1-x)2O7(A=Zr，Sn；x = 0.02~0.1) microwave dielectric materials and its’ microwave dielectric characteristics were also investigated. From the experimental results, (Ca0.2Sr0.8)3(Zr0.06Ti0.94)2O7 ceramics have the excellent dielectric properties which εr ~ 74, Q×f ~ 18000 GHz and τf ~ 418 ppm/°C at a sintering temperature of 1520oC for 4 hours. On the other hand, (Ca0.2Sr0.8)3(Sn0.06Ti0.94)2O7 ceramics also have the excellent dielectric properties which εr ~ 56.6, Q×f ~ 40000 GHz and τf ~ 270 ppm/°C at a sintering temperature of 1490oC for 4 hours. The second part is designed a dual-band band-pass filter for f0 = 2.4GHz and f1 = 5.2GHz with defected ground structure and stepped impedance resonators. Finally, the filter is implemented on FR4 and (Ca0.2Sr0.8)3(Sn0.06Ti0.94)2O7 substrates and compare the component characteristics. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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