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 Network Analyzers using S2VNA software

The S-parameter conversion function allows for the conversion of measurement results () to the following parameters:

Parameter

Equation

Impedance in reflection measurement ()

Admittance in reflection measurement ()

Impedance in transmission measurement ()

Admittance in transmission measurement ()

Inverse S-parameter

Equivalent admittance in transmission shunt measurements ()

Equivalent impedance in transmission shunt measurements ()

S-parameter complex conjugate

is characteristic impedance of Port a.

is characteristic impedance of Port b.

is measured S-parameter ( and are the port identifiers).

,


note

Equations for , , , are approximate. The general method of converting S-parameters to Z, Y, H, T, ABCD-parameters is presented in the General S-Parameter Conversion. The reason for using the approximate method is the measurement speed, as only one S-parameter is used in the calculations, whereas the general method requires measurement of the full matrix of S-parameters.


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).

Conversion softkey

Conversion OFF

To enable/disable the conversion, use the following softkeys:

Analysis > Conversion > Conversion

 

Function Z Reflection

Z Reflection softkeys

To select the conversion type, use the following softkeys:

Analysis > Conversion > Function

Then select the required function:

Zr: Reflection

Zt: Transmission

Yr: Reflection

Yt: Transmission

1/S: Inverse

Ztsh: Trans-Shunt

Ytsh: Trans-Shunt

Conjugation

 

 

 


note

All conversion types are indicated in the trace status field, when enabled.


 

Rev.:  24.2