R&S
®
ZVL System Overview
Measured Quantities
Quick Start Guide 1303.6538.62-01 92
,/1
1
1
1
0
ii
ii
ii
i
ii
Z
S
S
Z
Y =
+
=
where i numbers the analyzer/DUT port. The transmission parameters are calculated
according to:
()
99...,,1,,,/1
2
0000
==
+
= jijiZ
ZZSZZ
S
Y
ij
jiijji
ij
ij
Example:
Y11 is the input admittance of a 2-port DUT that is terminated at its output with the
reference impedance Z
0
(matched-circuit admittance measured in a forward reflection
measurement).
You can also read the converted admittances in a reflection coefficient measurement
from the inverted Smith chart.
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