676 



THE BELL SYSTEM TECHNICAL JOURXAL, MAY 1954 



Fig. 14 — Discrimination for 40 equal-strength point couplings arranged to 

 simulate the continuous distribution of Fig. 4, line 2. 



< 20 



r ^2 V ^2 ' 



Xi = 0.208 L 

 X2 = 0.103 L 



X3 = 0.170 L 

 X4 = 0.038 L 



4 

 0/7T 



Fig. 15 — Discrimination function for 8 equal strength couplings arranged to 

 maximize the bandwidth (e/ir range) for moderate discrimination. 



