Products > Test Equipment
SVA1032X - S11 in ohms and phase
(1/1)
trampas:
So I wanted to measure the impedance of a sensor in ohms/degrees for a sensor using the SVA1032X.  I was wondering if I was correct in setting up the VNA to do a polar graph in "Lin/Phase" and then assume the linear in conductivity (U) needs multiplied by 50ohm source impedance to get the magnitude in ohms?

Also does anyone happen to have a python script that might automate getting this measurement?

Thanks
virtualparticles:
If you are measuring the Reflection Coefficient (G) of the unknown, and calibration has been performed such that the reference plane is at the unknown, then the complex impedance is Z0*(1+G)/(1-G) where Z0 is the characteristic impedance, usually 50 ohms and G is the complex reflection coefficient, best expressed in rectangular coordinates for ease of adding and subtracting from "1".

See the attached article for the three common ways to make the measurement.
Navigation
Message Index
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod