臺灣博碩士論文加值系統

本論文重點在研究各種金屬防護結構的屏蔽效益，我們可藉由這些不同的金屬防護結構來避免電磁脈衝波穿透而造成防護區內部電子、資訊…等設備的嚴重傷害。本篇論文中防護架構方式區分為連續性之金屬屏蔽和非連續性之金屬屏蔽兩種；尤其，可利用平板層、圓柱層和球殼層結構來分析連續性之金屬屏蔽架構，同時藉由射線追蹤技巧的解析可以讓我們對於防護機制更加的了解；同樣道理，我們可以利用動差法和Floquet 定理，對非連續性之金屬屏蔽的三種形式四邊形防護槽、線網平面和線網盒來分析一維、二維、三維的屏蔽結構。在本論文中考慮了防護結構之各種參數對於防護效應的影響，並由數值結果歸納出可用的準則來提供實務設計時之有效參考。

This thesis studies the shielding effectiveness of conducting structures that are employed to prevent the electromagnetic pulses (EMP) from penetrating through to damage the electronic equipment inside the protected area. Two categories of conducting structures in terms of continuous and discrete shielding structures are considered in this study. In particular , three types of planar , circular cylindrical and spherical structures are analyzed for the continuous shielding structures by analytical ray tracing technique to provide physical in sight of shielding mechanism. Similarly , three types of discrete shielding structures with intentions to provide protection for one , two and three dimensional field polarization are analyzed via numerical method of moment and approximate Floquet theorem . Parameters associated with the shielding structures are examined in order to provide useful concepts for practical design. The numerical conclusions of this study can be employed as a guideline in practical design of EMP shielding structures.

目錄
中文摘要…………………………………………………………………i
英文摘要………………………………………………………………...ii
誌 謝……………………………………………………………………iii
目 錄…………………………………………………………………….iv
圖 目 錄………………………………………………………………...vi
第一章 前言…..…………………………………………………………1
1-1 電磁脈衝的產生與特性..……………………………….....1
1-2本計劃研究重點…………….………………………….…..3
1-3報告的格式…..……….……………….……...……………13
第二章 連續性金屬屏蔽………………………………………………14
2-1 基本理論………………………………………………….15
2.1.1 平面波的基本特性與傳播理論…………………17
2.1.2 平面波在不同介質間之反射與透射現象………22
2-2 分析屏蔽效率的一種簡易射線追蹤法……………….....27
2-3 平面導體材料之屏蔽效能……………………………….33
2-4圓柱屏蔽的例子.………………………………………….48
2-5 球面防護的例子………………………………………….56
第三章 非連續性金屬屏蔽……………………………………………65
3-1 電磁波的基本散射理論…………………………………..67
3-2 電磁波單一極化屏蔽和分析……………………………..70
3-3 雙極化防護與其分析………………………………..……85
3.3.1 平面波有效屏蔽度………………………………..87
3.3.2 磁偶極激發TE波有效屏蔽度………………..….93
3.3.3 低頻之屏蔽效益…………………………………102
3-4 理想屏蔽結構與分析…………..…………………….…110
第四章 結論………………………………………………………...128
參 考 資 料…………………………………………….…………..130

參考資料
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