R&S ZVB - Page 402

R&S
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ZVA / R&S
®
ZVB / R&S
®
ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 387
Remote
control:
CALCulate<Ch>:TRANsform:VNETworks:GLOop...
MMEMory:LOAD:VNETworks<Ch>:GLOop:DEEMbedding<Ph_pt>
'<file_name>'
MMEMory:LOAD:VNETworks<Ch>:GLOop:EMBedding<Ph_pt> '<file_name>'
(De-)Embedding at Port Pair
Selects a port pair transformation network for (de-)embedding, defines its parameters, and enables (de-
)embedding. Each port pair transformation network is assigned to a pair of single ended (physical) ports.
The two dialogs for deembedding and embedding are identical except for their inverse effect.
Port pairs
Port pair (de-)embedding extends the functionality of balanced port (de-)embedding to pairs of single-
ended physical ports. The analyzer uses the 4-port transformation networks known from balanced port
(de-)embedding, however, each transformation network is assigned to a pair of single-ended analyzer
ports. The port pairs must have the following properties:
 The two ports must be different.
 If port groups are defined, the two ports must be within the same port group.
As shown in section Combination of Different (De-)Embedding Networks, port pair deembedding is
calculated after single-ended deembedding, and the port pair embedding step precedes single ended
embedding. It is possible to combine a sequence of port pairs for (de-)embedding, each with its own
transformation network. The effect of port pair (de-)embedding depends on the individual pairs but also on
their order; see example in section Define Port Pairs for (De-)embedding.
A simple circuit which can be modeled using port pair (de-)embedding is a circuit (e.g. a resistance)
between two ports of a DUT. To obtain the circuit in the following figure, select port pair p,q and the Serial
Ls, Shunt L transformation network with all inductances set to zero (L1 = L2 = L3 = 0 H), R1 = R2 = 0 Ω
and R3 = R.
To model a 2-port (de-)embedding network between ports p and q, select port pair p,q and the 4-Port data
network, providing an appropriate set of equivalent 4-port S-parameters.