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delay of waveguide offset shorts

Question asked by jsmclean on Nov 6, 2007
Latest reply on Nov 11, 2007 by jsmclean
Dear Sirs:

I am attempting to make a  WR-430 cal kit with three offset shorts and a load.  My question is, how does one determine the "delay" of an offset short?  Clearly, the waveguide is dispersive and the group delay would certainly be a function of frequency.  I have looked at 5989-4840EN.pdf and 5956-4352.pdf but there does not seem to be an explanation for this.

What I was hoping to do was to modify one of the existing waveguide cal kit definitions in order to define a cal kit for WR 430 (and WR 975).

Could you tell me how one arrives at the delay used in the cal kit definitions?

Thank you very much.