WAVEGUIDE TRANSMISSION 



333 



We show in Fig. 6.5-1 (b) the same wave front shown in Fig. 6.5-1 (a) 

 but at an epoch later — after it has progressed a considerable distance along 

 the guide. We now find the reflected portion 2 complete and a new portion 



Fig. 6.5-1. The propagation of a multipl)' reflected wave front between two metal plates 



[Figs, (a)-(d)] is equivalent to the transmission of a TE wave parallel to the 



two plates. [Fig. (f)]. 



3 about to enter the guide. Following wave front 1 and at a distance of 

 one-half wave behind, we find, shown dotted, the "hollow" of the wave. 

 This we shall designate by the numeral 1'. We find here also a new portion 

 of the "hollow" 2' that has just undergone reflection. 



