臺灣博碩士論文加值系統

本篇論文提出一應用於無線通訊裝置之頻率選擇面縮小化設計。此一帶通縮小化頻率選擇面對於特定頻段具有很好的穿透率，並且在此通訊頻段外具有高度的屏蔽效率，此外對於不同極化及入射角度的平面波也具有優越的共振穩定性。利用此縮小化頻率選擇面製作成一帶通屏蔽體，其內部之天線的阻抗頻寬與天線場型僅有些微的影響。
本論文先由數值模擬軟體來討論設計此縮小化頻率選擇面之過程，由最終模擬的結果來看，此縮小化設計的頻率選擇面的確能達成所要求的目標。再經由實做一個原型來驗證此架構的效能，模擬及實作的結果都能得到預期的效果，由此驗證此縮小化頻率選擇面設計的可行性。

This thesis proposes a miniaturized frequency selective surface design for wireless communication devices. This miniaturized frequency selective surface has a well transmittance in the specific communication band, a good shielding effectiveness out of this band, and an excellent resonance stability performance with respect to different polarizations and angles of incident plane-waves. A band-pass shielding enclosure assembled by this miniaturized frequency selective surface only makes a slightly influence on the internal antenna impedance and antenna patterns.
This thesis discusses the procedure for designing miniaturized frequency selective surface by simulation first. Based on the simulation, this miniaturized frequency selective surface indeed achieves the performance requirements. Then we created and examined prototype of the miniaturized frequency selective surface. Both the simulated and measured results obtained demonstrate the claimed performance.

封面內頁
簽名頁
授權書．．．．．．．．．．．．．．．．．．．．．．．．．iii
中文摘要．．．．．．．．．．．．．．．．．．．．．．．．iv
英文摘要．．．．．．．．．．．．．．．．．．．．．．．．v
誌謝．．．．．．．．．．．．．．．．．．．．．．．．．．vi
目錄．．．．．．．．．．．．．．．．．．．．．．．．．．vii
圖目錄．．．．．．．．．．．．．．．．．．．．．．．．．ix

第一章　緒論
1.1 前言．．．．．．．．．．．．．．．．．．．．1
1.2 研究動機．．．．．．．．．．．．．．．．．．2
1.3 研究目的．．．．．．．．．．．．．．．．．．3
1.4 論文架構．．．．．．．．．．．．．．．．．．5
第二章　頻率選擇面
2.1 週期性結構分析．．．．．．．．．．．．．．．7
2.2 頻率選擇面性質概述．．．．．．．．．．．．．10
2.3 頻率選擇面元件構成形式．．．．．．．．．．．15
2.4 電磁屏蔽．．．．．．．．．．．．．．．．．．17
第三章　縮小化頻率選擇面
3.1 應用在無線區域網路頻段之頻率選擇面．．．．．19
3.2 拆解頻率選擇面單位元件使其成為雙層結構．．．24
3.3 增加電感電容效應．．．．．．．．．．．．．．29
3.4 最終設計之單位元件．．．．．．．．．．．．．33
3.5 結語．．．．．．．．．．．．．．．．．．．．36
第四章　模擬方式及實驗結果
4.1 模擬方式．．．．．．．．．．．．．．．．．．37
4.2 設計中重點參數尺寸變化的影響．．．．．．．．44
4.3 實驗與結果．．．．．．．．．．．．．．．．．54
4.4 應用於帶通屏蔽體之改善．．．．．．．．．．．59
第五章　總結．．．．．．．．．．．．．．．．．．62
參考文獻．．．．．．．．．．．．．．．．．．．．64

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