I have always felt that time gating to improve a calibration in coaxial or waveguide should not be used but I am not clear on what Agilent teaches on this subject when it comes to materials measurements.
Does Agilent still promote or suggest this technique for material measurements after a full 2 port cal is completed?
I own the latest Agilent 85071E with options but haven't explored this. Could someone from Agilent tell us if they promote time gating for a coax/waveguide calibration with their 85071 software these days?
If you do a perfect calibration, time gating will give no advantage (nothing to gate out). If you do NOT do a perfect calibration, time gating can be useful to remove residual effects. Of course, you must take care that your gating does not remove responses from the DUT and only removes responses from the system.