TRL waveguide calibration using three shim

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Tuomas Haitto

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Aug 20, 2026, 1:57:05 AM (6 days ago) Aug 20
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Hello,

If I want perform TRL waveguide calibration using three offset shim (1/4, 1/8 and 3/8), which calibration type I should choose from VNA-Tools calibration config?

Does it goes right if I just choose TRL and add two more "Line 1,2" where I'm telling my
shim definitions

-Tuomas 

Michael Wollensack METAS

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Aug 20, 2026, 4:16:01 AM (6 days ago) Aug 20
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Hi Tuomas,

take a look at example called 06_TRL_Example_3.5mm(f-m).

Go for an optimization calibration and use a TRL calibration with one shim as start values.

Regards
Michael

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