翻轉式階躍阻抗共振器電磁帶隙架構設計及雜訊抑制最佳化擺置設計

Design of Flipped Stepped-Impedance-Resonator Electromagnetic Bandgap Structure and Position Optimization for Noise Suppression

汪餘聰(Yu-Cong Wang)

指導教授 ： 吳瑞北

國立臺灣大學/電機資訊學院/電信工程學研究所/碩士(2018年)

https://doi.org/10.6342/NTU201804134

摘要

為改善電源完整性和電磁相容問題，本文首先提出一個新的採用翻轉式階躍阻抗共振器且可以應用在兩層板的非週期電磁能隙結構，以及優化過的2 × 2組合，並分別推導其等效電路。該結構可以同時抑制2.3-2.4 GHz以及5-6 GHz的頻段，抑制效能分別達到30 dB和50 dB。接著採用該結構色散關係的邊界條件對各項參數進行優化設計和截止頻帶的預測。然後提出了一項設計法則，透過抑制效果等高線圖進行結構的最佳化擺置設計，採用六個2 × 2組合可以抑制兩個頻帶的雜訊傳播5-10 dB，並採用Vector Network Analyzer 及Signal Quality Analyzer進行實際量測。本文進行模擬及實驗比較驗證正確性，並詳細介紹原理以及設計流程。

關鍵字

電磁能隙結構 ； 階躍阻抗共振器 ； 翻轉式結構 ； 兩層板 ； 最佳化擺置

並列摘要

To tackle the Power Integrity (PI) and Electromagnetic Compatibility (EMC) problems, this thesis proposes a novel FSIR non-periodic EBG structure and its 2 × 2 optimal combination which can be applied to 2-layers PCB. Their equivalent circuit are also derived. This structure can suppress both of 2.3-2.4 GHz and 5~6 GHz bands at the same time, with suppression level -30 dB and -50 dB, respectively. Secondly, utilize the dispersion diagram to optimize the design parameters and estimate the stopband. Finally, a simple method of suppression contour map is proposed to analyze position optimization of the structures. Six 2 × 2 combinations can suppress the noise propagation in two stopbands by 5-10 dB, and measurements are carried out by using VNA and SQA. Both simulation and experimental results are used to validate the method. Besides, the design rule and the theory are also discussed in detail.

並列關鍵字

electromagnetic bandgap(EBG) ； stepped-impedance resonator (SIR) ； flipped structure ； 2-layer ； position optimization

參考文獻

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