R3765/67G Series Network Analyzer Operation Manual
7.10 Software Fixture Function (OPT 71/72)
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7.10.2.4 Balanced Matching Circuit Function (OPT 71 only)
The balanced matching circuit function is used to measure the characteristics of a DUT, assum-
ing that the matching circuit of capacitance C and inductance L is attached between the mea-
surement ports. Arbitrary values can be set to capacitance C and inductance L. The conductance
component G of the capacitor and resistance component R of the inductor can also be set.
The matching circuit function adds a matching circuit between the measurement port and GND,
while the balanced matching circuit function adds a matching circuit between the measurement
ports.
Note:
The balanced matching circuit function is not available for OPT 72.
•
When measuring a 3-port device (OPT 11 or 14 is required)
The balanced matching circuit can be added between TEST PORT 2 and TEST PORT 3.
•
When measuring a 4-port device (OPT 14 is required)
The balanced matching circuits can be added between TEST PORT 2 and TEST PORT 3,
and TEST PORT 3 and TEST PORT 4 respectively.
7.10.2.5 Degree of Balance Measurement Function (OPT 71 only)
The degree of balance measurement function is used to measure the balanced factors (B param-
eter) of the magnitude and phase of transmission characteristics. When they are completely bal-
anced, the measurement results show 0 dB for the magnitude and 0 degree for the phase.
The definition of the degree of balance is as follows.
Note:
The balanced matching circuit function is not available for OPT 72.
•
When measuring a 3-port device (OPT 11 or 14 is required)
Degree of balance between TEST PORT 2 and TEST PORT 3: B23 = -(S21/S31)
Degree of balance between TEST PORT 3 and TEST PORT 2: B32 = -(S31/S21)
