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Find three terminal equivalent circuit for an antenna system

This finds the three terminal equivalent circuit for an antenna system using the method described by (Schmidt nd):

I measure ZC by connecting both leads of the twinlead together and measuring the impedance to ground. Next I connect wire 2 to ground and measure the impedance between wire 1 and ground and call this Za. Reversing the connections, by grounding wire 1 and measuring between wire 2 and ground gives Zb.
Fig 1: Schmidt's network

Fig 1 above shows Schmidt's network in terms of the intermediate values ZD, ZU and ZC which are calculated from the directly measured Z1, Z2, ZC.

The results are valid only for linear circuits.

Inputs:
    Real Imaginary
Za (Ω)  
Zb (Ω)  
ZC (Ω)  
Results:  
ZD (Ω)  
ZU (Ω)  
Z1 (Ω)  
Z2 (Ω)  
Z3 (Ω)  
       

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

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Changes

Version Date Description
1.01 17/02/2019 Initial.
1.02    
1.03    
1.04    
1.05    

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