Significance of resistance of the wireless power transmitter coil at resonance frequency

[newbe_always]

I am characterizing a wireless transfer coil with the help of this document from Omicron.

In page no no-7 you can see that they are finding the resistance of the coil at resonance and it's value is 9.304K Ohm.

May I know the significance or impact of this resistance in wireless power transfer.

I believe it has no significance,they are just finding the resonance frequency for other calculations.Please correct me if I am wrong.

 

[JimB]

The resistance at resonance is used in the QUCS simulation in Section 3, on page 13 of the document.

JimB

 

[danadak]

A coils parasitic R dissipates energy one consequence.

The "effective" L of the coil is reduced, consider seriesl to parallel
z transformation :