VNA Concepts and Features
R&S
®
ZNL/ZNLE
267
User Manual 1178.5966.02 ─ 07
8.6.2.3
Circuit Models for 2-Port Networks
The lumped element 2-port transformation networks for (de-)embedding consist of the
following two basic circuit blocks:
●
a capacitor connected in parallel with a resistor
●
an inductor connected in series with a resistor
The 2-port transformation networks comprise all possible combinations of 2 basic
blocks, where either one block represents a serial and the other a shunt element or
both represent shunt elements. In the default setting the resistors are not effective,
since the serial resistances are set to 0 Ω, the shunt resistances are set to 10 MΩ and
the shunt inductances are set to 0 Siemens.
The first network is defined by its S-parameters stored in an imported two-port Touch-
stone file (
*.s2p
). No additional parameters are required.
The following networks are composed of a serial capacitance C or inductance L (as
seen from the test port), followed by a shunt C or L. They are named
Serial C, Shunt C / Serial C, Shunt L / Serial L, Shunt C /
Serial L, Shunt L
.
Offset Parameters and Embedding
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