18 



BELL SYSTEM TECHNICAL JOURNAL 



2~r 



1000 



500 





 1500 



1000 



500 







1000 Cycles 2000 



1000 Cycles 2000 



o — • 



20, 



2L-I 



i 



20, 



:'OQQ 



Fig. 10— Single Band Pass Wave-Filter: Li = 20/97r, Lj = 9/80x, 

 Ci = 9/807r, Ci = 20/9x 

 Fig. 11 — Complementary High and Low Pass Wave-Filter: Li = 9/207r, 

 Li = 5/97r, C, = 5/97r, C2 = 9/20,r 



