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See Find |Z|,R,|X| from VSWR,|Z|,R,Ro

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Find R,|X| from VSWR,|Z|,Ro

This calculator finds the equivalent series resistance, magnitude of series reactance given VSWR, |Z| and Ro.

 It is useful for antenna analysers that do not decompose Z into R,X but note that it cannot give the sign of X (there is not enough information). Further discussion at The sign of reactance.

Inputs:
VSWR
|Z|
Ro
 
Results:
R (Ω)
|X| (Ω)
|θ| (°)
G (S)
|B| (S)

SVN:

The calculator does not do a lot of error checking, if you enter nonsense, it will produce nonsense. NaN means not a number, check the input values.

The results might be very sensitive to small changes in the input variables for some input data. It is worth doing a sensitivity analysis (by varying the input values by a small amount) to get some idea of the uncertainty.

Links

Changes

Version Date Description
1.01 20/04/2014 Initial.
1.02    
1.03    
1.04    
1.05    

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