R&S ZVL GUI Reference
Channel Menu
Operating Manual 1303.6580.32-06
234
• T
ransformation Network contains all available 2-port networks (see below). Networks are either
def
ined by lumped elements or by means of imported S-parameter data. The active network
appears in inverse colors. The element parameters (C, R, L) for the selected network are
displayed on the right side.
• Read Data From File... is enabled as long as the 2-Port Data network is active. This network is
defined by its S-parameters stored in a two-port Touchstone file (*.s2p). No additional parameters
are required.
• Set to Ideal Through is enabled as long as the 2-Port Data network is active. An imported S-
parameter set is replaced by the S-parameters of an ideal through connection, which eliminates
the transformation network.
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 C connected in parallel with a resistor.
• An inductor L connected in series with a resistor.
The 2-port transformation networks comprise all possible combinations of 2 basic blocks, where one block
represents a serial, the other a shunt element. In the default setting the resistors are not effective, since
the serial Rs are set to 0 V, the shunt Rs are set to 10 MV.
• The first network is defined by its S-parameters stored in an imported two-port Touchstone file
(*.s2p). No additional parameters are required.
The following networks are composed of a serial C or 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.
• 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 C / Shunt C, Serial L / Shunt L, Serial C /
Shunt L, Serial L.