S21相异常

您使用的连接器和校准套件是什么。
你做过Ecal或Mechanical（OSL）cal吗？
您使用的是什么版本的FW？
您看到的响应是我之前使用未知直通校准时所看到的，并且未知直通的大致长度不在预期长度的20-160度之内。
尝试定义直通。
（是的，有点复杂，但毕竟是微波工程）。
编辑：跳转是由于未知直通修正中S21 * S12术语的sqrt符号的错误解决引起的，BTW.Edited：Dr_joel于2014年11月20日下午9:38



     以下为原文

  What are the connectors and cal kit that you used. Did you do Ecal or Mechanical (OSL) cal?  What version of FW are you using.

The response you see is what I have seen  before when using an Unknown thru calibration and the approximate length of the Unknown Thru is not within 20-160 degs of the expected length.

Try uisng a defined thru.  (yes, all a bit complicated, but after all it is microwave engineering).  

edit: the jumps are caused by the incorrect solving of the sign of the sqrt of S21*S12 term in the Unknown thru correction, BTW.

Edited by: Dr_joel on Nov 20, 2014 9:38 PM

乔尔博士，非常感谢你的建议。
我实际上使用非Keysight机械校准套件执行全2端口校准，但我确实将校准套件的定义文件保存到E5071C中。
我不确定我是否通过校准做未知因为我只是从Cal菜单中选择2端口Cal。
但我确实使用SMA适配器在THRU cal期间连接我的电缆，因为它们都是SMA公连接器。
当你建议使用定义的直通时，你的意思是我应该测量我的适配器的偏移延迟并在cal kit定义文件中定义它（使用Modify cal kit）？
你提到跳转是由于S21 * S12术语的sqrt符号的错误解决，如果我将数据显示格式改为“扩展阶段”或“正相位”，它会有帮助吗？
希望再次收到你的来信。



     以下为原文

  Dr Joel, thanks a lot for the advice.
I am actually performing a full-2 port cal with a non-Keysight mechanical calibration kit, but I do save the definition file of my cal kit into E5071C.
I am not sure whether I am doing Unknown thru calibration or not because I just choose 2-port Cal from the Cal menu.
But I do use a SMA adapter to connect between my cable during THRU cal as both of them are SMA male connector.

When you advice to use a defined thru, do u mean i should measure the offset delay of my adapter and define it in the cal kit definition file (using Modify cal kit)?
You mention that the jump is due to incorrect solving of the sign of the sqrt of S21*S12 term, will it help if I change the data display format to "Expanded phase" or "Positive Phase"?

Hope to hear from you again.

可能你只是在做SOLT cal（而不是Unknown thru），所以你可能需要将相位延迟（它显示为通过延迟时间）添加到修改后的校准套件中。
先尝试一下。



     以下为原文

  probably you are doing just SOLT cal (not Unknown thru) and so you probably do need to add the phase delay (it shows up as a thru with a delay time) into a modified cal kit.

try that first.