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Log-Magnitude
Smith Chart
Unwrapped Phase
N/A
No S-Parameter file was submitted. Add ?filename=filename.s(x)p to the URL 2-Port
S11
(Reflection)
S12
(Isolation)
S21
(Transmission)
S22
(Reflection)
All
(Transmission)
All
(Reflection)
All
(Isolation)
All On
All Off
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for viewer
Instructions
IPP S-Parameter viewer Instructions
Chart Type
choose your chart type from the drop down box:
Log-Magnitude
,
Smith Chart
or
Unwrapped Phase
Parameter Check boxes
Use the checkboxes to view individual S-Parameters, or choose to view by groups:
All Transmission
,
All Reflection
,
All Isolation
or
All Parameters
.
Return to Product Page
Click the link at the top left to return to the product page.
Interactive features.
Point Label Tooltip
When you hover your mouse over each s-parameter trace marker, a label appears with
x data, y data, s-parameter type, and
In Band
or
Out of Band indicators
When hovering over the s-parameter chart, the interactive icon buttons appear on the bottom left. It unlocks interactive features including the
Reset button
, the
Zoom Button
, and the
BoxZoom button
Zoom Button
Clicking the Zoom button allows zoom control with your
Mouse Scroll
, it also allows to
Grab and drag
, by clicking and holding anywhere on the chart
Box Zoom Button
The Zoom button allows a more detailed zoom control.
Click and drag
in a square pattern anywhere on the chart to zoom into that square. To retain Point Label Tooltip interaction, you must click the standard zoom button again
Reset Button
Clicking the Reset button brings you back to your original state.
S-Parameter definitions
Scattering parameters
describes the input-output relationships between ports in an electrical system. Specifically at high frequency it becomes essential to describe a given network in terms of waves rather than voltage or current. Thus in S-parameters we use power waves.
For a two port network, s-parameters can be defined as,
S11
is the input port voltage reflection coefficient.
S12
is the reverse voltage gain.
S21
is the forward voltage gain.
S22
is the output port voltage reflection coefficient.
The S-parameter matrix can be used to determine reflection coefficients and transmission gains from both sides of a two port network. This concept can further be used to determine s-parameters of a multi port network.
These concepts can further be used in determining
Gain
,
Return loss
,
VSWR
and
Insertion Loss
.
Return Loss
can be thought of as a measure of how close the actual input/output impedance of the network is to the nominal system impedance value.
VSWR
is defined as,