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研究生： 洪俊彥
Hung, Chun-Yen
論文名稱： 燒結促進劑對Li2(Zn0.9Ca0.1)Ti3O8介電陶瓷微波特性之影響與應用
The Effect of Added Sintering Aids on Microwave Dielectric Properties of Li2(Zn0.9Ca0.1)Ti3O8 Ceramics and Applications
指導教授： 李炳鈞
Li, Bing-Jing
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2011
畢業學年度： 99
語文別： 中文
論文頁數： 93
中文關鍵詞： 介電陶瓷 、濾波器
外文關鍵詞： dielectric ceramic, filter
相關次數： 點閱：40  下載：0 
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    • 本論文內將討論Li2(Zn0.9Ca0.1)Ti3O8介電陶瓷材料，藉由分別添加不同燒結促進劑CuO、V2O5，探討產生的液相對其微波特性的影響。實驗結果顯示，添加0.5wt%的V2O5可有效降低燒結溫度到980℃，此時可得介電常數εr約為26.84、Q×f值為35,595 GHz（at 8.82 GHz）、溫度飄移係數τf約為+0.72 ppm/℃。
    另外，本論文以FR4、氧化鋁、Li2(Zn0.9Ca0.1)Ti3O8為基板，製作一個堆疊的步階阻抗濾波器，利用IE3D電磁模擬軟體並與實作的測量值比較，可獲得縮小濾波器的面積與較好的頻率響應結果。

    The microwave properties of Li2(Zn0.9Ca0.1)Ti3O8 dielectric ceramic materials are discussed in this paper. By adding different sintering aids CuO and V2O5 respectively, we study the effects of liquid-phase for the microwave properties of Li2(Zn0.9Ca0.1)Ti3O8. The experimental results show that Li2(Zn0.9Ca0.1)Ti3O8 with 0.5 wt% V2O5 addition can efficiently reduce sintering temperature from 1070℃to 980℃, and the dielectric properties the ceramics are dielectric εr about 26.84,Q×f about 35,595 GHz（at 8.82 GHz）and τf about +0.72 ppm/℃.
    In addition, a stacked stepped-impedance resonator filter on FR4, Al2O3 and Li2(Zn0.9Ca0.1)Ti3O8 are fabricated. The experimental measurements demonstrate that the ceramic Li2(Zn0.9Ca0.1)Ti3O8 with added sintering aids can be used for microwave applications for their superior microwave properties of low loss, smaller device area, high Q×f value and high relative dielectric constant substrate.

    第一章 緒論 1 1-1 前言 1 1-2 研究動機、目的與方法 2 第二章 陶瓷介電材料 4 2-1陶瓷材料之微波特性 4 2-1-1 介電性質 4 2-1-2 品質因數： 7 2-1-3 共振頻率溫度係數： 9 2-2 燒結原理 10 2-2-2 液相燒結理論 11 2-3 尖晶石之結構 14 2-4 介電共振器（Dielectric Resonator：DR）原理 15 第三章 微帶線與濾波器之原理 18 3-1 微帶線理論 18 3-1-1 微帶線之結構 18 3-1-2 等效介電常數與特徵阻抗 18 3-2 微帶線的損耗 20 3-2-1 介電損耗（Dielectric loss） 20 3-2-2 導體損耗（Conductor loss） 21 3-2-3 輻射損耗（Radiation loss） 21 3-3 微帶線的不連續效應 22 3-3-1 開路端效應 22 3-3-2 步階阻抗不連續效應 23 3-3-3 直角彎曲效應 24 3-3-4 T型接面效應 25 3-4 濾波器理論 26 3-5 共振器間的耦合形式 27 3-5-1 電場耦合 27 3-6 共振器結構 30 3-7 四分之一波長的阻抗轉換器 34 3-7-1 四分之一波長開路殘段（Open stub） 35 3-7-2 以四分之一波長開路產生傳輸零點之理論分析 35 3-8非對稱式饋入 36 第四章 實驗程序與量測方法 39 4-1起始原料 39 4-2 微波介電材料之製備 39 4-2-1 粉末製備 39 4-2-2 陶瓷體製備 40 4-3 特性分析與量測 42 4-3-1 X-Ray分析（XRD） 42 4-3-2 掃描式電子顯微鏡（SEM） 42 4-3-3 化學成分分析 43 4-3-4 密度之量測 43 4-3-5 微波特性之量測 43 4-3-6 量測步驟 50 4-4 濾波器之製作與量測 50 4-4-1 濾波器規格 50 4-4-2 濾波器實作 53 4-4-3 濾波器量測 53 第五章 實驗結果與探討 54 5-1 Li2(Zn0.9Ca0.1)Ti3O8添加燒結促進劑特性探討 54 5-1-1 未添加燒結促進劑之特性 54 5-1-2 添加燒結促進劑CuO之影響 61 5-1-3 添加燒結促進劑V2O5之影響 73 5-2 濾波器特性探討 84 5-2-1 FR4基板特性探討 85 第六章 結論與未來展望 89 參考文獻 91

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