Undesired Resonances in High-Speed Differential Pair due to Non-Ideal Return Path Design
Undesired Resonances in High-Speed Differential Pair due to Non-Ideal Return Path Design
复制标题
非理想返回路径设计导致高速差分对中出现不良谐振
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Ken Wu
中科院分区：
文献类型：
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作者：
Yansheng Wang;Hanfeng Wang;Ken Wu
本文研究了一种特殊的G-S-S-G型高速差分对。仿真结果表明，谐振存在于共模和差模信号。进一步的研究发现，这是由于不小心产生了一个四分之一波长的谐振结构，这是造成共振的原因。为了消除共振，本文推荐了两种方法。每种方法都有自己的优点和局限性。所提出的解决方案可以作为设计类似差分对时的设计规则。
This paper studies a specific G-S-S-G style high-speed differential pair. Simulation shows that resonances exist in both common- and differential-mode signals. With the further investigation, it turns out to be that a quarter-wavelength resonant structure is incautiously created, which is responsible for the resonances. To remove the resonances, two methods are recommended in this paper. Each method has its own benefits and limitations. The proposed solutions can be treated as design rules when similar differential pairs are designed.