Concepts and Features
R&S
®
ZNB/ZNBT
190
User Manual 1173.9163.02 ─ 38
In contrast to standard balanced embedding (4-port), the matching circuit is only
applied to the differential mode port (2-port). It can be specified via a Touchstone s2p
file or by parametrizing a lumped "Shunt L, Shunt C" element model.
4.6.2.9
Combining Several De-/Embedding Networks
The R&S
ZNB/ZNBT allows to select a combination of networks to be numerically
added/removed at different layers
●
2-port networks at single ended physical ports
●
4-port networks at pairs of single ended physical ports
●
4-port networks at balanced logical ports
●
1-port ground loop networks
●
2-port differential match embedding networks at balanced logical ports
The different steps for deembedding and embedding are carried out in the following
order:
Figure 4-8: De-/Embedding calculation flow
This means that the real networks are removed before virtual networks are added.
The (de-)embedding steps are carried out in the following order:
1. Single Ended Deembedding: every physical port can be deembedded from a single
2-port network
2. Port Set Deembedding: every port set can be deembedded from one or more 4-, 6-
or 8-port networks. There is no restriction on the sequence of port pairs and deem-
bedding networks.
3. Balanced Deembedding: every balanced logical port can be deembedded from a
single 4-port network
4. Ground Loop Deembedding: the DUT's ground connection can be deembedded
from a single 1-port network
5. Ground Loop Embedding: the DUT's ground connection can be embedded in a sin-
gle 1-port network
6. Balanced Deembedding: every balanced logical port can be embedded in a single
4-port network
Offset Parameters and Embedding
