差分线的特征阻抗有些不对劲

> {quote：title = echo write：} {quote}>但是S（参数）变量列表中不存在Z（1,1）或Y（1,1）您可以通过两种方式创建它：1
。对于原理图仿真，编辑S参数仿真块。
在“参数”选项卡上，您将找到计算Y和Z参数的选项。
2.如果你只有S参数，你可以将这些方程放在数据显示器上，创建Y和Z参数：Y = stoy（S）Z = stoz（S）对于其他问题...你能上传你的吗？
工作区？
这将是最容易排除故障的。
您的EM型号存在一些潜在问题，与侧面接地条和下方接地层之间的过孔连接有关。
CPW端口上有一个有趣的应用说明，也适用于您的情况：http：//edocs.soco.agilent.com/pages/viewpage.action？pageId = 217816660



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  > {quote:title=echo wrote:}{quote}
> but Z(1,1) Or Y(1,1) does not exist on the list of the variable o f S-parameter

You can create it in two ways: 

1. For schematic simulation, edit the S-parameter simulation block. On the "Parameters" tab, you will find options to calculate the Y and Z parameters.

2. If you have only S-parameters, you can place these equations on the data display, to create Y and Z parameters:
Y=stoy(S)
Z=stoz(S)

For the other questions ... can you upload your workspace? That will be easiest to troubleshoot.
There are a few potential problems with your EM model, related to the via connection between side ground strips and ground plane below.
There is an interesting application note on CPW ports, which also applies to your case:
http://edocs.soco.agilent.com/pages/viewpage.action?pageId=217816660

非常感谢！



     以下为原文

  Thanks a lot!