在电缆和同轴到波导之间使用ECal过渡是否可行

谢谢，戴夫。
我已经潜伏了很多年 - 在过去的9年里，我的实验室里有一个PNA，现在还有一个PNA-X。
最后迫切需要我认为论坛会有所帮助。
以下是我对85070E / ECal us的理解 - 85070E探头软件基本上进行了两次校准 - 一次用于ECal，另一次用于探头。
探头使用空气/短路/水进行校准，ECal使用其内部标准。
在每次测量之前，探头软件可以刷新电缆的校准，从而消除电缆相位的变化，但保留探头的响应。
从本质上讲，它是某种形式的港口扩张或固定？
杰夫



     以下为原文

  Thanks, Dave.  I've been lurking for many years - I've had a PNA in my lab the last ~ 9 years, and have a PNA-X as well now.  Finally had an urgent need that I thought the forum would be helpful for.

Here's my understanding of the 85070E / ECal us - the 85070E probe software essentially does two calibrations - one for the ECal and one for the probe.  The probe uses air/short/water for its calibration, and the ECal uses its internal standards.  Before each measurement, the probe software can refresh the calibration of the cable, which removes changes in the phase of the cable, but retains the response of the probe.  Essentially, it's some form of port extention or fixturing?

Jeff

理论上 - 您可以将ECal留在电缆的同轴端和同轴电缆到波导转换之间，如果您以足够低的功率运行（低于ECal压缩点），并且您愿意编写一大堆软件
要进行重新校正数学运算，您可以设置一个系统，在该系统中，您可以针对校准后发生的任何温度或运动漂移（幅度和相位）校正测量值。
但是，这不是我推荐的DIY项目。
但好消息是我们已经为您完成了这项工作，并创建了一个类似Ecal的模块，该模块设计为信号路径中的机构，并附带软件，可以为您完成所有重新校正数学运算。
我们将其称为CalPod，您可以找到有关这些模块及其功能的更多信息[_ * HERE * _ | www.home.agilent.com/en/pc-2274317/calpod-calibration-refresh-module?nid = -33010.0
0.00＆安培; CC = US＆安培; LC = ENG]



     以下为原文

  theoretically - you could leave the ECal in place between the coax end of your cable and the coax to waveguide transition and if you are operating at low enough power (below the ECal compression point), and you are willing to write a whole bunch of software to do the re-correction math, you could setup a system where your measurements are corrected for any temperature or movement drift (magnitude and phase) that has occurred after calibration.  

However, that is not what I would recommend as a DIY project. But the good news is that we have done this work for you and created an Ecal-like module that is designed to be institu in the signal path and comes with the software that will do all the re-correction math for you.  We call it the CalPod and you can find more information about these modules and their capabilities [_*HERE*_|www.home.agilent.com/en/pc-2274317/calpod-calibration-refresh-module?nid=-33010.0.00&cc=US&lc=eng]

达拉斯是对的。
这样做非常困扰，Calpod为您完成所有工作，温度补偿范围为-30至+ 80C。
要做你想做的事情，你可以通过将你的ecal直接放入，WG适配器直接连接到它来做到这一点。
然后，在WG端口校准系统;
它需要是一个2端口cal，所以你需要第二个WG适配器转到端口2.然后，用WG端口表征ecal，但奇怪的是端口1位于Ecal的远端。
现在，当您执行1端口Ecal时，它是指连接Ecal远端端口的WG连接器的输出。
重新校准，然后测量。
Calpod做同样的事情，体积小得多，成本约为1/2（不包括控制器）。



     以下为原文

  daras is right. It is a lot of fussing around to do that, and Calpod does it all for you, with temperature compensation from -30 to +80C.

To do what you what to do, you could do it pretty simply by putting your ecal in-line with, with the WG adapter connected directly to it.

Then, calibrate the system at the WG port; it will need to be a 2 port cal, so you need a second WG adapter to go to port 2.
Then, characterize the ecal with WG port, but the odd thing is the port 1 is on the far side of the Ecal.

Now, when you do a 1 port Ecal, it is reference to the output of the WG connector connected the far-end port of the Ecal.

Recalibrate, then measure.

Calpod does the same thing, is a lot smaller, and costs about 1/2 as much (not counting the controller).