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研究生： 蔡卓錚
Tsai, Cho-Cheng
論文名稱： 低溫燒結SrV2O6及低損耗Li2Mg2(MoO4)3介電材料在微波頻段之研究與應用
Study and Applications of Low-firable SrV2O6 and Low-loss Li2Mg2(MoO4)3 Dielectrics at Microwave Frequencies
指導教授： 黃正亮
Huang, Cheng-Liang
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： 2018
畢業學年度： 106
語文別： 中文
論文頁數： 109
中文關鍵詞： 微波介電 、低溫燒結 、低損耗
外文關鍵詞： microwave dielectric, low-firable, low-loss
相關次數： 點閱：43  下載：1 
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    • 本篇論文主要分別介紹三大部分，第一和二部分將介紹新開發的微波介電材料，第三部分則是濾波器的模擬與實測。
    首先第一部分為SrV2O6陶瓷之微波介電特性，由實驗結果發現，在燒結溫度為650℃並持溫4小時擁有最佳的微波介電特性ε_r~9.7、Q×f~21,000 GHz、τ_f~-146 ppm⁄℃。但從XRD繞射圖和EDS觀察到二次相Sr2V2O7的存在。第二部分為Li2Mg2(MoO4)3陶瓷之微波介電特性，觀察實驗結果，在燒結溫度為880℃並持溫4小時擁有最佳的微波介電特性ε_r~9.5、Q×f~80,000 GHz、τ_f~-69 ppm⁄℃。
    最後第三部分，我們以HFSS模擬濾波器電路，並將電路實作於FR4、氧化鋁、Li2Mg2(MoO4)3基板上，由結果可知，高介電常數能使電路面積縮小且高Q×f使濾波器表現更好。

    In order to obtain a novel low-temperature co-fired ceramics, microwave dielectric properties of SrV2O6 and Li2Mg2(MoO4)3 ceramics had been investigated. The experimental results show that SrV2O6 has best properties at sintering temperature 650℃ for 4 hours, with ε_r~9.7, Q×f~21,000 GHz and τ_f~-146 ppm⁄℃﹔the Li2Mg2(MoO4)3 has best properties at sintering temperature 880℃ for 4 hours, with ε_r~9.5, Q×f~80,000 GHz and τ_f~-69 ( ppm)⁄℃.In this paper, the band-pass filter was designed with U-shaped structure which contains Source-Load Coupling, Open-stub. According to the results of measurements, the performance of the filter was improved by using low-loss dielectric ceramics as the substrate, and its size was reduced by using high dielectric constant ceramics.

    摘要 I 致謝 VII 目錄 VIII 圖目錄 XIII 表目錄 XVIII 第一章 緒論 1 1-1 前言 1 1-2 研究目的 3 第二章 文獻回顧 5 2-1 微波技術與共振器發展 5 2-2 材料的燒結 7 2-2-1 材料燒結之擴散方式 8 2-2-2 材料燒結之過程 9 2-2-3 燒結的種類 10 2-3 介電共振器原理 12 2-4 微波介電材料之特性 15 2-4-1 介電係數(Dilectric Constant, ε_r) 15 2-4-2 品質因數(Quality Factor, Q) 19 2-4-3 共振頻率溫度飄移係數(τ_f) 22 2-4-4 介電特性量測方法 23 2-5 拉曼光譜與分子振動模態簡介 31 2-5-1 拉曼光譜(Raman spectra) 31 2-5-2 分子的振動模態(Vibrational modes) 32 2-6 低溫共燒陶瓷(LTCC)技術簡介 33 第三章 微帶線及濾波器原理 34 3-1 濾波器原理 34 3-1-1 濾波器的簡介 34 3-1-2 濾波器之種類及其頻率響應 35 3-2 微帶線原理 38 3-2-1 微帶傳輸線的簡介 38 3-2-2 微帶線的傳輸模態 39 3-2-3 微帶線各項參數公式計算與考量 40 3-2-4 微帶線的不連續效應 43 3-2-5 微帶線的損失 50 3-3 微帶線諧振器的種類 51 3-3-1 λ/4短路微帶線共振器 52 3-3-2 λ/2開路微帶線共振器 53 3-4 共振器間的耦合形式 55 3-4-1 電場耦合(Electric Coupling) 56 3-4-2 磁場耦合(Magnetic Coupling) 59 3-4-3 混和耦合(Mixed Coupling) 63 3-5 濾波器設計 67 3-5-1 U型微帶線共振器 67 3-5-2 Source-Load Coupling 68 3-5-3 四分之一波長開路殘斷 69 第四章 實驗程序與量測儀器 72 4-1 微波介電材料的製備 72 4-1-1 粉末的製備與球磨 73 4-1-2 粉末的煆燒 73 4-1-3 加入黏劑、過篩 73 4-1-4 壓模成形、去黏劑及燒結 74 4-2 微波介電材料的量測與分析 74 4-2-1 密度測量 74 4-2-2 X-Ray分析 75 4-2-3 SEM分析 75 4-2-4 拉曼光譜儀分析 76 4-3 濾波器的製作過程 77 第五章 實驗結果與討論 79 5-1 SrV2O6的微波介電特性 79 5-1-1 SrV2O6的XRD相組成分析 79 5-1-2 SrV2O6的拉曼光譜分佈 81 5-1-3 SrV2O6的SEM、EDS分析 82 5-1-4 SrV2O6的相對密度分析 84 5-1-5 SrV2O6的介電係數(ε_r)分析 84 5-1-6 SrV2O6的品質因數與共振頻率乘積(Q×f)分析 85 5-1-7 SrV2O6的共振頻率溫度飄移係數(τ_f)分析 86 5-2 Li2Mg2(MoO4)3的微波介電特性 87 5-2-1 Li2Mg2(MoO4)3的XRD相組成分析 87 5-2-2 Li2Mg2(MoO4)3的拉曼光譜分析 89 5-2-3 Li2Mg2(MoO4)3的SEM、EDS分析 90 5-2-4 Li2Mg2(MoO4)3的相對密度分析 92 5-2-5 Li2Mg2(MoO4)3的介電係數(ε_r)分析 92 5-2-6 Li2Mg2(MoO4)3的品質因數與共振頻率乘積(Q×f)分析 93 5-2-7 Li2Mg2(MoO4)3的共振頻率溫度飄移係數(τ_f)分析 94 5-2-8 Li2Mg2(MoO4)3的晶格常數 95 5-3 濾波器的模擬與實作 98 5-3-1 玻璃纖維基板(FR4)之模擬與實作結果 98 5-3-2 氧化鋁基板之濾波器模擬與實作結果 100 5-3-3 Li2Mg2(MoO4)3(自製基板)之濾波器模擬與實作結果 102 第六章 結論 105 參考文獻 107

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