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BELL SYSTEM TECHNICAL JOURNAL 

 Network 18 



(To simulate a short symmetrical line or circuit) 

 Symmetrical Section of Line or Circuit : 



X = open-circuit impedance; 

 Y = short-circuit impedance ; 



tanh~^ -sY/X = propagation length ; 



■y[XY = iterative impedance. 



Simulating Network: 



Za = VXFtanh-iVF/X; 



Zb = A/XF/tanh-WF/X; 



Wi = .45737; ma = .14456; Wi' = .04263; ^2' = .92403. 



The impedances z^ and Zb are to be realized in desired frequency ranges, 

 more or less approximately, by comparatively simple physical networks. 



