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BELL SYSTEM TECHNICAL JOURNAL 



forming a system of coaxial circles, is associated with currents flowing 

 in isolated wires as, for example, in a single vertical antenna and under 

 ordinary operating conditions it is also found between the conductors 

 of a coaxial pair (Fig. 1). 



Fig. 1 — The relative directions of the field components in a coaxial transmission line. 

 The remaining three equations of the set (1) form the second group: 



a(p£,) 



dp 



= — iwfxpHz, 



dE 



(g + iue)E^ = 



dz 

 dH, dH 



- = ioofxHp, 



(3) 



dz dp 



describing the circular electric field. Uniformly distributed electric 



