REDUCTION OF SKIN EFFECT LOSSES 



517 



have fundamental and higher modes of transmission. Let us now examine 

 this situation more closely. 



Fig. 11 — Distribution of fields and current in transmission line filled with laminations. 



First, in the case of the partially filled line, we can use the results of 

 Section IV to find the following approximate expressions for the current 

 density and magnetic field in the lamina: 



1 



5 



/o = 



j^= (_l)n+iA\. x2l n^ 



(wtt) - COS — {y — ^ 

 si s s 



(VI-1) 

 (VI-2) 



