Concepts and features
R&S
®
ZND
191
User Manual 1173.9557.02 ─ 61
The following networks are composed of a shunt C or L (as seen from the analyzer
port), followed by a serial C or L. They are named
Shunt C, Serial L /
Shunt L, Serial C / Shunt C, Serial C / Shunt L, Serial L
.
At the GUI, the "capacitance C<i> in parallel with resistance R<i>" circuit blocks can be
replaced by equivalent "capacitance C<i> in parallel with conductance G<i>" circuit
blocks.
In addition, there is also a
Shunt L, Shunt C
circuit model available, where the
shunt C is defined as a capacitance C in parallel with a conductance G:
4.6.2.4
Circuit models for 4-port networks
The lumped element 4-port transformation networks for (de-)embedding consist of the
following two basic circuit blocks:
●
A capacitor C connected in parallel with a resistor.
●
An inductor L connected in series with a resistor.
The transformation networks comprise various combinations of 3 basic circuit blocks,
where two blocks represent serial elements, the third a shunt element. In the default
setting the resistors are not effective, since the serial Rs are set to 0 Ω, the shunt Rs
are set to 10 MΩ. Moreover, the serial elements can be replaced by imported 2-port S-
Offset parameters and de-/embedding
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