微波吸波與頻蔽材料之電磁特性分析 林鈺川、林明星 ; 許崇宜
E-mail: 9223691@mail.dyu.edu.tw
摘 要
本論文主要是探討平板材料的電磁屏蔽與吸波特性，研究中建立了兩種理論模型，第一種為正向模型，第二種為逆向模型
。在正向模型的部分中，我們針對多層介質已知的電磁參數( 、 )與厚度來分析其電磁屏蔽與吸波特性。在逆向模型的部分 中，我們針對單層介質材料量測其電磁屏蔽與吸波特性，再利用所推導出的解析方程式來計算此材料的電磁參數；在此逆 向模型中，所需要的參數為介質的厚度與所量測的散射參數大小及相位。正向模型的部分，我們建立了頻域分析方法，進 行了多層介質材料的電磁屏蔽與吸波特性的分析。在逆向模型的部分，散射參數的大小及相位必須很準確，則反推出的電 磁參數就很準確。
關鍵詞 : 電磁屏蔽 ; 屏蔽材料 ; 吸波材料 ; 正向模型 ; 逆向模型 目錄
目錄 封面內頁 簽名頁 授權書...iii 中文摘要...v 英文摘 要...vi 誌謝...vii 目錄...viii 圖目 錄...x 表目錄...xvi 第一章 緒論 1.1研究動機及目
標...1 1.2文獻回顧及研究方法...2 1.3章節概要...3 第二章 材 料電磁屏蔽與吸波特性量測方法 2.1電磁屏蔽與吸波理論...5 2.2同軸傳輸線(Coaxial TL)方
法...8 2.3雙橫向電磁腔(DTEM Cell)方法...12 2.4自由空間(free-space)量測法...14 2.5材 料電磁屏蔽量測之量測不確定度...16 第三章 材料電磁屏蔽與吸波特性理論分析模型 3.1正向分析模
型...18 3.2逆向分析模型...22 3.2.1 A方法...22 3.2.2 B方 法...24 第四章 數值模擬與量測結果...27 第五章 結論...66 參 考文獻...67 附錄A 正向分析理論模型推導...70 附錄B 逆向分析理論模型推導(A方 法)...80 附錄C 逆向分析理論模型推導(B方法)...88
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