Cmrr (Common Mode Rejection Ratio); Procedure For Balance-Unbalance Conversion - Agilent Technologies E5071C Manual

E5071C
imbalance parameter as it is derived from single-ended S-
parameters.

CMRR (Common Mode Rejection Ratio)

By turning on the balance-unbalance conversion function, you can select
CMRR (ratio between the transmission characteristic in the differential
mode and that in the common mode) of the balanced port as the
measurement parameter. The table below shows the CMRR parameter you
can select when measuring each balanced device.
Device Type
Single-ended - balanced
device
Balanced - balanced
device
Single-ended - single-
ended - balanced device

Procedure for Balance-Unbalance Conversion

When using three test ports, perform a full three-port
•
calibration on the test ports to be used. When using four test
ports, perform a full four-port calibration.
1. Extend the calibration plane, if necessary, by using the port
extension function or network de-embedding function. For more
on the port extension and network de-embedding functions, see
Extending the Calibration Plane Using Network De-embedding.
1. Press
Analysis
2. Click Fixture Simulator > Topology > Device.
3. Select the balanced/unbalanced topology.
Softkey
SE-Bal
Bal-Bal
SE-SE-
Bal
474
CMRR
S /S
ds21
S /S
sd12 sc12
S /S
dd21
S /S
ds31 cs31
S /S
ds32 cs32
key.
Function
Establishes port 1 on the DUT as an unbalanced port
and port 2 as a balanced port
Establishes both port 1 and port 2 on the DUT as
balanced ports
Establishes port 1 and port 2 on the DUT as
unbalanced ports and port 3 as a balanced port
and
cs21
cc21
and