Using an Agilent E8364A PNA, what is the best method to measure electrical delay? I am most interested in the electrical length of one path compared to another across frequency very accurately. I have been using the raw phase, as well as adding delay to unwrap the phase, to be able to view the phase across frequency. Using the same added delay, I am comparing the difference in the phase at different frequencies.

Also, using VEE, is it straightforward to compute this from the s-matrix? I have been simply subtracting the phase, and using the Matlab unwrap function, and seem to get differing results when the unwrap function is used.

Thanks in advance.

Bob

Also, using VEE, is it straightforward to compute this from the s-matrix? I have been simply subtracting the phase, and using the Matlab unwrap function, and seem to get differing results when the unwrap function is used.

Thanks in advance.

Bob