40 



BELL SYSTEM TECHNICAL JOURNAL 



III. General Low-and-High Pass Wave-Filters of Ladder 



Type 



Li 



/~vm\ 



m, 



c, 



± 



Li 



gL 2 |L 2 



L -5 L_ Li I 



Li 



X 



Li — mLik, L.i = aL.ik, 



HH HH|l 2 



n 2 c; c, J. 



C x = 







f f' f f 



, lfe =[r^ifc 



(fi-fo)R 



-£<2fe = 



£ 



4t(/i-/o) 



/i-/o 



C2* = [rC 2 fc] = 



m=im 2 





/» 



L r/0/1 J m\ /ii/ L /0/1 J 



L /0/1 J m\ /0/1/ L r/0/1 J 



,* _/o/i 

 Jl* —-7 — 



/loo 



