利用梯形補償結構抑制差模信號線轉角之共模雜訊

Common-Mode Noise Reduction Using Trapezoidal Compensation Structure for Bend Discontinuities of Differential Transmission Lines

黃美意(Mei-Yi Huang)

指導教授 ： 薛光華

中原大學/電機資訊學院/電子工程研究所/碩士(2019年)

https://doi.org/10.6840/cycu201900418

摘要

本論文針對微帶線與帶線的差模訊號線轉彎所產生之線段不等長，提出改善線段不等長產生之共模雜訊抑制方法，此結構在頻域的部分是使用3D全波模擬軟體HFSS進行模擬，在時域的部分則是利用ADS進行模擬。在頻域時觀察差模轉共模的模態波形，在時域則是觀察共模雜訊波形。此論文提供的抑制方法是利用梯形補償結構，增加不等長線段之走線長度，減少時序不同步所產生的共模雜訊，而設計梯形補償的方式與結構尺寸也是本論文的一大重點，藉由分析不同參數對於共模雜訊的影響，最終整理出趨勢圖表。

關鍵字

梯形補償結構,差模信號線,轉角,共模雜訊

並列摘要

This paper investigates on generation and mitigation of common-mode noise for bend discontinuities of differential transmission lines in microstrip line and strip line structure. This paper provides methodology to mitigate common-mode noise. The structure in frequency domain simulated by 3-D full-wave simulator HFSS and in time domain simulated by simulator ADS. In frequency domain compared by differential-to-common mode conversion, in time domain measured by common-mode noise. The mitigation scheme provided in this paper is that using trapezoidal compensation structure which can reduce common-mode noise
to increase transmission lines length. The design of trapezoidal compensation structure and structural dimensions are also a major focus of this paper. Analyze the impact of different parameters on common mode noise. Finally, the trend chart is sorted out.

並列關鍵字

Trapezoidal Compensation Structure,Differential Transmission Lines,Bend,Common-Mode Noise

參考文獻

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