Anritsu MS2024B - Page 28

3-3 VNA Master Architecture VNA Fundamentals
3-4 PN: 10580-00289 Rev. K Vector Network Analyzer MG
Figure 3-2. MS20xxC VNA Master Block Diagram During Reverse Sweep
Note
The MS20xxC VNA Master, when equipped with Option 77, can calculate the
balanced differential, common, and mixed mode S-parameters (S
d1d1
, S
c1c1
,
S
c1d1
, S
d1c1
) using the 4 measured S-parameters S
11
, S
21
, S
12
, and S
22
).
These additional S-parameters can be used to measure reflections from differential
cables when the two ends of the cable are connected to Port 1 and Port 2 of the
MS20xxC VNA Master. Because these S-parameters are a function of all 4
S-parameters, it requires both a forward and reverse sweep to complete the
calculation.
For more information about these additional S-parameters, refer to
Chapter 12, “Balanced Ports, Option 77”.
DUT
Port 1 Port 2
Source
Receiver
Port 1
Receiver
Port 2
Reference
Receiver
Switch
Bridge/
Coupler
Bridge/
Coupler
S
12
S
22