R&S ZNA26 - Page 319

GUI reference
R&S
®
ZNA
319User Manual 1178.6462.02 ─ 20
5.2.4.1 Controls on the Ratio tab
The "Setup" button opens the S-Params setup dialog.
The "More Ratios..." button opens the More Ratios dialog which allows to select an
arbitrary ratio of wave quantities.
b<i> / a<j> Source Port <j>
Selects predefined complex ratios of the standard 2-port wave quantities a
1
, a
2
, b
1
, and
b
2
.
The predefined wave quantities can all be obtained with the same test setup, where a
2-port DUT is connected between the analyzer ports 1 and 2. The stimulus signal is
provided by the analyzer port 1 or 2 ("Source Port").
The predefined wave quantities correspond to the 2-port S-parameters:
●
"b1/a1 Source Port 1" is the ratio of the wave quantities b
1
and a
1
, measured at
port 1. This ratio corresponds to the S-parameter S
11
(input reflection coefficient).
●
"b2/a1 Source Port 1" is the ratio of the wave quantities b
2
and a
1
and corresponds
to the S-parameter S
21
(forward transmission coefficient).
●
"b2/a2 Source Port 2" is the ratio of the wave quantities b
2
and a
2
, measured at
port 2. This ratio corresponds to the S-parameter S
22
(output reflection coefficient).
Meas softtool