藉由插入頻率選擇面來抑制螺旋電感所產生的假性輻射 張原菖、邱政男
E-mail: [email protected]
摘 要
在本論文中，吾人提出一個在平面螺旋電感中插入帶拒(band-stop)頻率選擇面(FSS, frequency selective surface)的方法，去抑 制平面螺旋電感的假性輻射(spurious emissions)。假性輻射尤其在螺旋電感擁有寬的阻抗匹配頻帶時顯得特別嚴重，插入螺 旋電感中的FSS被設計用來大幅縮小螺旋電感的阻抗匹配頻帶並抑制假性輻射，而不犧牲電感原先的電氣特性(electrical performance)，像是自共振頻率(self resonant frequency)、串聯電感值(series inductance)、品質因數(Q factor)。 內文同時提出 一種新形狀元件所構成的帶拒FSS。將其與典型元件構成的帶拒FSS作性能比較，典型帶拒FSS抑制spurious emissions的能力 已相當不錯，而新型FSS不但具有更卓越抑制spurious emissions的性能，且對螺旋電感原來的電氣特性沒有任何負面影響。
綜合實驗結果發現，新型FSS在未來研究上，還有改進電感品質因數的發展潛力。
關鍵詞 : 平面螺旋電感 ; 頻率選擇面 ; 假性輻射 ; 帶拒結構 目錄
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 表目錄．．．．．．．．．．．．．．．．．．．．．．．．．xiv 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．．．．．．．．．．．．．．．．．．7 第二章 平面螺旋電感模型建立與其電氣特性 2.1 電感基本原理．．．．．．．．．．．．．．．．8 2.2 平面螺旋電感模型建立．
．．．．．．．．．．．11 2.3 假性輻射的抑制．．．．．．．．．．．．．．．15 第三章 頻率選擇面之初始設計流程 3.1 週期性結構理論分析．．．．．．．．．．．．．19 3.2 頻率選擇面概述．．．．．．．．．．．．．．．22 3.3 頻率 選擇面之初始設計．．．．．．．．．．．．26 3.4 頻率選擇面穿透率測試．．．．．．．．．．．．29 3.5 結語．．．
．．．．．．．．．．．．．．．．．33 第四章 實驗結果與討論 4.1 插入頻率選擇面後螺旋電感的輻射特性．．．．．34 4.2 插入頻率選擇面後螺旋電感的電氣特性．．．．．37 4.3 抑制假性輻射的驗證．．．．．．．．．．．．．39 4.4 構成 頻率選擇面之元件個數討論．．．．．．．．41 第五章 結論．．．．．．．．．．．．．．．．．．．46 參考文獻 ．．
．．．．．．．．．．．．．．．．．．47 參考文獻
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