本論文將討論混相及燒結促進劑對介電陶瓷材料Mg0.95Co0.05TiO3之影響，實驗結果顯示，原始的Mg0.95Co0.05TiO3 燒結溫度必須達到1450 ℃ ，此時可得介電特性εr ~16.8， Qxf ~230000 (9GHz) ，τf ~ -55 (ppm/oC)。由於τf為負值，藉由與Ca0.61Nd0.78/3TiO3 (+247(ppm/oC))混相以補償其τf 。再添加不同燒結促進劑B2O3 與ZnO ，探討液相對其微波特性的影響。
當0.9 Mg0.95Co0.05TiO3 -0.1Ca0.61Nd0.78/3TiO3添加0.25 wt% B2O3在1225℃燒結持溫4小時，具有最佳的介電特性﹔εr ~21.6， Qxf ~55000 (9GHz)，τf ~-32.4 (ppm/oC)。
添加0.75 wt% ZnO在1250℃燒結持溫4小時，具有最佳的介電特性﹔εr ~22.22， Qxf ~70000 (9GHz)，τf ~-28.0(ppm/oC)。改善了Mg0.95Co0.05TiO3 介電陶瓷微波特性。
另外試圖與Ca0.8Sm0.4/3TiO3 (+400(ppm/oC)) 混相{x Mg0.95Co0.05TiO3-(1-x)Ca0.8Sm0.4/3TiO3}藉以補償其負的溫度係數進而探討其介電特性之變化，結果顯現在x=0.9時，燒結溫度1275℃，具有較佳的微波特性：介電常數為22.48，Q×f值約為108000(9GHz)，共振頻率溫度係數(τf)約為-8(ppm/oC)左右。
最後，本論文嘗試以FR4、氧化鋁、自製的陶瓷基板，製作設計一個Parallel-Coupled Line帶通濾波器，操作頻段涵蓋4.64-6.96GHz，以期改善濾波效果。

The microwave properties of Mg0.95Co0.05TiO3 dielectric ceramic materials are discussed in this paper. By adding different sintering aids ZnO and B2O3 respectively, we study the existence effects of liquid phase for the microwave properties of Mg0.95Co0.05TiO3. The experimental results show that with addition of 0.75wt% ZnO can efficiently reduce sintering temperature from 1350 oC to 1250 oC, and we obtain that the dielectric properties are εr ~22.22， Qxf ~70000 (9GHz) and τf ~ -28.0(ppm/oC). Concerning about the negative value of τf , we choose adding the Ca0.8Sm0.4/3TiO3 (+400(ppm/oC)) to adjust the value approaching to zero. At 1275 oC, 0.9Mg0.95Co0.05TiO3-0.1Ca0.8Sm0.4/3TiO3 appears the best property: εr~22.48, Qxf~108000(9GHz) andτf~ -8(ppm/oC).
Hence, the microwave properties of Mg0.95Co0.05TiO3 dielectric ceramic materials is improved.
In addition, we design and fabricate a Parallel-Coupled Line bandpass filters with designed center frequency of 5.8GHZ on FR4 、Al2O3 、MCT-CST substrate.

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