DISTORTION CORRECTION 



451 



have a propagation constant formula 



1 + (c + r)zu/2R 

 1 + (c - l)zn/2i?' 



(14) 



where, besides the arbitrary impedance Zn, there is the arbitrary real 

 c ^ 1. These sections will be dissipative owing to the ever present 

 resistances. Utilizing directly the rule given for inverse bridge net- 

 works, it can be seen that when closed by R these two structures are 

 inverse networks of impedance product R-. 



The four bridged-T sections of the second group (IL, Hi, lie, and 

 lid) in Fig. 6 have the formula 



lla 



cZzi 



o— * — o-WV^ 



oAAA/Vo- 



=D.2 



c^l (usually) Zjj Zzj-R/ 



Fig. 6 — Bridged-T(II) type constant resistance sections. 



J, ^ 1 + zii/2i^ + c{z,,l2Ry 

 ' 1 - zu/2i? + c{z,,j2Rf ' 



(15) 



