5 CALIBRATION AND CALIBRATION KIT
111
Note The UNKNOWN THRU and SLIDING LOAD standards
are exceptional in the above calibrations. The S-
parameters of these standards are defined in the process
of calibration. UNKNOWN THRU is used only in full
two-port calibration.
TRL calibration and its modifications (TRM, LRL, LRM) apply partial definition of the
standards:
§TRL THRU standards must have the required value of Z0
(S11=S22=0) and known length (delay),
§TRL LINE/MATCH standard must have the same value of Z0 as
the first standard,
§TRL REFLECT standard must have the phase known as
accurately as ±90°.
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