带有S2P文件的端口扩展，用于在仿真软件中进行匹配

您好，我有一个关于使用来自ENA 5071C的S2P块和S1P块匹配网络的问题。
我需要在CPW线路上将天线与LC网络相匹配。
为了使电缆固定，我使用ecal后使用端口扩展。
对于S1P文件，这很好，但对于S2P文件，似乎更改了史密斯图表参考。
设置如下：馈送到cpw线以匹配天线这是我使用的过程。
从天线我得到S1P块，端口扩展开启端口1（所有线路返回到馈送断开连接）。
在此之后，我通过在馈送和匹配上放置电缆来测量CPW的使用端口扩展。
我缩短了两边并为两个端口使用了自动校准端口扩展。
接下来，在将电缆固定并使其成为直通传输之后，我抓住S2P块。
当我尝试将其放入模拟工具时，RL和史密斯图表与实际测量结果不匹配。
我想知道将S2P块的两个端口扩展都打开是不正确的？
任何和所有的帮助将不胜感激。
谢谢，GrantEdited：gk于2013年12月12日下午5:57



     以下为原文

  Hello,

I have a question regarding matching networks using an S2P block and S1P block from ENA 5071C.

I need to match an antenna with an LC network along a CPW line.  To dembed the cable I use the port extensions after using an ecal.  For the S1P file this is fine however for a S2P file it seems the smith chart reference is changed.   

The setup is like this: feed to cpw line to match to antenna

Here is the process I use.  From the antenna I get the S1P block with the port extensions on for port 1(with all lines going back to feed disconnected).

After this I measure the use port extensions for the CPW by putting a cable on the feed and at the match.  I short both sides and use an auto cal port extension for both ports.

Next I grab the S2P block after fixing the cable short and making it a thru transmission.

When I try to put this into a simulation tool the RL and smith chart do not match to what the real measurements are.  I am wondering if it is not correct to put both port extensions on for the S2P block?

Any and all help would be appreciated.

Thanks,

Grant

Edited by: gk on Dec 12, 2013 5:57 PM