712 THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1953 



of € and a thickness half that of the conducting layers {wji = 2) are 

 assumed throughout. 



5.1 Clogskm I Cable 



/e, = ^^[l + ?^^+...]ohn.sMile, (38) 



/.= 0.741 X 10- ^[^. log. g 



-. (39) 



- 0.2172 henries/mile, 



v-3 1 C?2 



Lex = 0.741 X 10"' logio ~ henries/mile, 



^ 0.0388 X 10-'€x . , / ., 

 Cex = " -^ farads/mile, 



€i = t(l + W/t), 



Pi = wVLexCex radians/mile, 



IT 



«i = 772 + Kiw^Fl^c nepers/mile, 



where: 



_ 41040 r D\ Dl 1 



Zi lD\-dyDi-diy 



^ 22.124 D1D2 - did2 



Zx (Di + di)(Z)2 + ^2) * 



5.2 ClogaUm II Cable 

 _ 328320 r B2u;^Z)^FL , 1 u / m 



17.35 ^ 

 Zu = — 7=" ohms, 



/3ii = wVLexCex radians/mile, 



