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Calculate impedance using S11 reflection, S21 series & S21 shunt

This calculator allows calculation of impedance from S11 using S11 reflection; S21 series; and S21 shunt (all S parameters wrt 50Ω). Note:

The results are valid only for linear circuits.

Inputs:
  Real /magnitude Imaginary / angle
Results:
Zx (Ω)
Yx (S)

The calculator does not do a lot of error checking, if you enter nonsense, it will probably produce nonsense.

It is worth noting that accurate S21 measurements depend on 12 term correction of the VNA, a point overlooked by many proponents of the series and shunt measurement techniques.

Links / references

Changes

Version Date Description
1.01 27/10/2019 Initial.
1.02    
1.03    
1.04    
1.05    

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