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題 名 | A New Defected Ground Structure (Dgs) and Its Applications to Improve the Stopband Performance of Microstrip Lowpass and Bandpass Filters=一種新的接地面鏤空結構,可用來改善微帶線低通與帶通濾波器的截止頻帶表現 |
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作 者 | 江孟駿; 曾建中; 張嘉陽; 梁思明; 陳安邦; | 書刊名 | 遠東學報 |
卷 期 | 25:3 2008.09[民97.09] |
頁 次 | 頁401-410 |
分類號 | 448.533 |
關鍵詞 | 微帶線; 接地面鏤空結構; 截止頻帶; Microstrip; DGS; Stopband; |
語 文 | 英文(English) |
中文摘要 | 一種新的接地面鏤空結構可以產生數個傳輸零點來改善截止頻帶的響應。此 種結構乃是在接地面開幾條狹縫線(slot line),這些狹縫線的中點都是連起來的。 狹縫線的長度可以用來調整傳輸零點的位置,用以調整截止頻帶的頻寬與截止水 平。這種接地鏤空結構可以用來改善低通濾波器的截止頻帶響應,另一方面也可 以用來抑制平行耦合微帶線帶通濾波器的高階虛假響應。本論文透過設計數個電 路及模擬結果來驗證理論之可行性。 |
英文摘要 | A new defected ground structure (DGS) with plural transmission zeros is proposed to enhance the bandgap effects. The structure is composed of three slot lines joined together at their middle points in the ground plane. Lengths of the lines are adjusted to generate resonant frequencies in a close proximity, and hence to control attenuation level and bandwidth of the stopband. The DGSs are used to improve the stopband performance of microstrip lowpass filter and parallel coupled bandpass filter. Several circuits are designed and simulated to verified the idea. |
本系統中英文摘要資訊取自各篇刊載內容。