Microwave VSWR Measurement on Oscilloscope

Thread Starter


Joined Dec 24, 2009
I am using the microwave testbench shown in figure for Standing Wave Ratio measurement.
I have two choices:
one using VSWR Meter,other using CRO.
Can I apply the direct formula (SWR=maximum voltage/minimum voltage) to the square wave
displayed on CRO ?

But according to lab manual (SWR=Square root of maximum voltage/Square root of minimum

voltage). Why we are taking the square root ?