| Summary: | 碩士 === 國立聯合大學 === 電機工程學系碩士班 === 102 === There are two main subjects in this thesis. The first part is developed the Ni0.5Ti0.5(Nb1-xTax)O4 and Ni0.5(Ti1-xZrx)0.5NbO4 microwave dielectric materials and its’ microwave dielectric characteristics were also investigated. From the experimental results, Ni0.5Ti0.5(Nb0.3Ta0.7)O4 ceramics have the excellent dielectric properties which εr~45.2, Q×f~48,400GHz and τf~72.6ppm/°C at a sintering temperature of 1310℃ for 6 hours. On the other hand, Ni0.5(Ti0.3Zr0.7)0.5NbO4 ceramics also have the excellent dielectric properties which εr~38.3, Q×f~55,000GHz and τf~7.6 ppm/°C at a sintering temperature of 1370℃ for 6 hours.
The second part is designed a single-band monopole antenna for 2.6GHz in LTE system with quarter-wave radiator. Finally, the monopole antenna is implemented on FR4 and Ni0.5(Ti0.3Zr0.7)0.5NbO4 substrates and compare the component characteristics.
|
|---|
