本論文提出一款新穎的帶通/帶拒可重置頻率選擇表面設計，該頻率選擇表面的操作特性是建立在對偶定理上，使用井字作為週期性結構單元，藉由將蕭特基二極體安裝在相鄰井字的末端，使井字型單元可以透過偏壓狀態切換成槽孔單元。因井字型單元和槽孔單元具有互補特性，故可於相同的頻率下分別產生帶拒和帶通的效果。也就是說，當二極體工作於逆偏時，井字型單元呈現帶拒效果，當二極體工作於順偏時，槽孔單元呈現帶通效果。因井字型單元與槽孔單元皆為十字形之幾何結構，故效能表現不太會受到入射訊號極化方向的影響。井字型單元除了提供互補式架構外，也作為二極體之偏壓網路，不需額外製作偏壓線。除此之外，本架構只需利用一外加偏壓即可控制頻率選擇表面的帶通/帶拒切換效果。本研究進行的量測頻率選擇表面面板之近場特性評估、遠場雷達反射截面積量測與透射率量測，經由信號處理，可將量測結果與模擬結果進行比較。量測結果發現若在模擬架構上帶入蕭特基二極體之等效電路，可得出與實作量測相符的模擬結果，驗證在考量二極體等效電路的情況下，以電磁模擬設計頻率選擇表面的可行性。本架構可應用於雷達罩和天線上，藉由可切換的帶通/帶拒特性，達到多樣化的性能表現。

Novel reconfigurable FSS designs that come with inverted reflection and transmission bands are developed in this thesis. According to the duality theorem, complementary periodic structures made of similar wire and slot elements shall yield opposite scattering responses. This is facilitated by placing diodes between tips of proposed #-shaped wire elements, which form a band stop type FSS. By providing forward bias, connected elements are transformed into a slot array, which generates inverted pass and stop bands near the designated resonant frequency. The proposed periodic structure comprises one layer of microstrip lines laid on a thin printed circuit board. The #-shaped elements also act as the biasing network for serially connected diodes. Only one bias voltage is needed to control the FSS transmission condition. Range setups and signal processing techniques are devised so that simulated results of infinite FSS can be compared with measured results of finite size panels. By considering the diode’s equivalent circuits in simulation models, good agreements with prototype measurement results are observed. The complementary reflection and transmission characteristic can be forwarded to advanced radome and antenna designs to achieve more versatile performance features.

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[30] 蔡晉哲, 波束可重置天線陣列設計與雷達反射截面積增強結構開發, 國立臺灣科技大學電機工程所, 碩士論文, 民國105年