The S-parameter conversion function allows the conversion of measurement results (S11 or S21) to the following parameters:
Parameter |
Equation |
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Impedance in reflection measurement () |
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Admittance in reflection measurement () |
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Impedance in transmission measurement () |
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Admittance in transmission measurement () |
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Inverse S-parameter for reflection and transmission measurements respectively |
and |
S-parameter complex conjugate |
and |
is characteristic impedance of port 1. is characteristic impedance of port 2. and are measured S-parameters (1 and 2 are the port identifiers). |
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note |
Equations for , , , are approximate. The reason for using the approximate method is the measurement speed, as only one S-parameter is used in the calculations. |
The S-parameter conversion function can be applied to an individual trace of a channel. The trace to which the function is applied must be preselected as active (See Selection of Active Trace/Channel).
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To enable/disable the conversion, use the following softkeys: Analysis > Conversion > Conversion |
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To select the conversion type, use the following softkeys: Analysis > Conversion > Function Then select the required function: •Impedance Z •Admittance Y •Inverse 1/S •Conjugation |
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note |
All conversion types are indicated in the trace status field, when enabled. |
