Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 350 / 813

Channel Menu R&S
®
ZVA/ZVB/ZVT
1145.1084.12 4.188 E-6
Balanced Port Embedding/Deembedding
Selects a 4-port transformation network for balanced port (de-)embedding, defines its parameters,
assigns it to a physical port and enables (de-)embedding. The two dialogs for deembedding and
embedding are identical except for their inverse effect. The dialogs are available only after a balanced
port configuration has been defined.
The dialogs contain the following control elements:
•
Physical Port is the physical analyzer port for the added or removed circuit. The transformation
networks are defined such that the physical analyzer test port is connected to the left of the
circuit; the DUT port is on the right side.
•
(De-)embed DUT enables or disables the (de-)embedding function.
•
Transformation Network contains all available 4-port networks (see below). Networks are
defined by lumped elements or by means of imported S-parameter data. 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 one of the networks involving two-port or four-port
S-parameter data is active. The S-parameters are read from two-port (*.s2p) or four-port (*.s4p)
Touchstone files. Each two-port file can be assigned to one of two different physical ports, to be
selected by means of the
Phys. Port radio buttons.
•
Set to Ideal Through is enabled as long as one of the networks involving two-port or four-port S-
parameter data 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 4-port networks
The lumped element 4-port transformation networks for (de-)embedding consist of the following two
basic circuit blocks: