探討雙帶線結構下差模信號線交越其他線路之共模雜訊生成與抑制

Investigation on generation and mitigation of common-mode noise for differential traces crossing other traces in dual strip line structure

游忠諺(Zhong-Yan You)

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(2017年)

https://doi.org/10.6840/cycu201700702

摘要

本論文針對帶線下差模訊號線交越其他線路，提出新的抑制結構抑制共模雜訊生成，此結構是在頻域下是使用3D全波模擬軟體HFSS進行模擬，在時域的部分則是利用CST進行模擬。透過兩種模擬軟體互相比較與驗證，在頻域時透過差模轉共模的模態比較波型，在時域則是觀察共模雜訊。此論文提供的抑制方案為，當在上下層傳輸線交越時，將原始結構的交越區角度從45度轉變90度並且將弱耦合改成強耦合，不管從時域或是頻域都可以看到顯著降低共模雜訊。為了驗證提出的結構是否有效，將會進行實驗板的測試，透過電腦模擬與實際量測互相驗證。最後提出設計準則抑制共模雜訊。

關鍵字

雙帶線 ； 差模信號線 ； 共模雜訊 ； 耦合係數

並列摘要

This paper investigates on generation and mitigation of common-mode noise for differential traces crossing other traces in dual strip line structure. This paper provides new structures to mitigate common-mode noise. The structure simulated by 3-D full-wave simulator HFSS and CST. Through two simulation software to compare and verify each other, 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 when the upper and lower layer transmission lines are crossed, the crossing angle of the original structure is changed from 45 degrees to 90 degrees and the weak coupling is changed to strong coupling. No matter time domain or frequency domain can be observed that the mitigation scheme significantly reduce the common-mode noise. In order to verify the proposed structure, the test board will be tested and verified by computer simulation and measurement. Finally, the design rule will be proposed to mitigate common-mode noise.

並列關鍵字

Dual Strip Line ； Differential Signal ； Common-mode Noise ； Coupling Coefficient

參考文獻

[1] Yafei Wang , Shuhui Yang , Xuehua Li, Yiqing Cao and Hongwen Yang, “Research on orientation between dual stripline for minimizing crosstalk in integrated high-density circuits,” 2010 2nd International Conference on Computer Engineering and Technology (ICCET), pp. 16-18, April. 2010.

[2] Weifeng Shu, Xiaoning Ye, Yinglei Ren, and Xinjun Zhang, “Crosstalk analysis for dual stripline with parallel and angled routing,” IEEE Symp. Electromagn. Compat., pp. 5–9, Aug. 2013.

[3] Songping Wu and Jun Fan, “Modeling of crosstalk between two nonparallel striplines on adjacent layers,” IEEE Trans. Electromagnetic Compatibility. vol. 55, No. 6, pp. 1302-1310, June 2013.

[4] Jimmy Hsu and Kai Xiao, “Broad-side crosstalk mitigation in dual-stripline designs,” IEEE Symp. Electronic Components and Technology Conference, pp. 1955–1959, June, 2012.

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