Coaxial to waveguide adapter

[Patricio Greco]

Hello , I measured a coaxial to waveguide adapter using unknown thru method on van tools. Te procedure was very straight-full. But when I try to export the measurement result as .s2p file the program sets both ports to 50Ω and the file results unusable. There are any way to save an .s2p with different Zo en each port ?? 

Regards, Patricio. 

[Michael Wollensack METAS]

Hi,

Touchstone is just allowing a common reference impedance for all ports.

Workaround:

1. Export the sdatb-file as sdatcv-file.
2. Edit the sdatcv-file in a text editor and change the reference impedance of the waveguide port from 1 to 50 ohm.
3. Export the sdatcv-file to s2p. Like that no transmission line junction is added.

Regards

Michael

[Patricio Greco]

Thank you Michael. I solved the problem writing a program in python to extract the s parameters from .sdatb file. 

Regards, Patricio.