450 BELL SYSTEM TECHNICAL JOURNAL 



These networks must not be confused with those of Figs. 14 and 15: 

 they are like the latter in form but differ in the values of certain of 

 their elements, as will be seen on close examination; they differ also 

 in their functions, the networks of Figs. 14 and 15 simulating the 

 ff-section impedance and the <r'-load admittance, respectively, whereas 

 the networks of Figs. 18 and 19 simulate merely the resistance and 

 the conductance components of these, respectively. In Fig. 18 the 

 reactance of the LiC4-portion neutralizes that of the i?2i^2C2-portion ; 

 and in Fig. 19 the susceptance of the L/C4'-portion neutralizes that 

 of the G2'C2'L2'-portion. (See also Patent No. 11()7693 and No. 

 1437422, respectively.) 



B>- combining the resistance-simulator of F"ig. IS and the reactance- 

 simulator of Fig. Hi there results the iniiieclaiice-sinuiJator of J-'ig. 20. 



|-^VVWlV^-|K!!<«rs Whena=O.I4 



U C; C4 



R,-YiI7c , Whena-0.I4, 



•0.3601: 



U- 01201: (-^ i L U- 0.107 U 



a-l28C 1^, i, § Ci-0.120C 



^ '■'-"^ . _=?= Si' oil'. §1' iT*. ,.,o,.' 



•12811 



c;-0334c . ^ r 7 '^'^ 



Fig. 20 — Impfclanre- Simulator for a Fig. 21 — .-Vdmittanre -Simulator for a 

 Loaded Lino Terminating at ff-Scction, Loaded Line Terminating at a'-Load, 

 with a about 0.14. (This figure indi- with a' about 0.14. (This figure indi- 

 cates the synthesis of the network in rates the s\nllu'sis of the network in 

 Fig. 14.) Fig. 15.) 



But it is found that the LjC'i-portion and the L^Ci-portion can be 

 combined, without appreciable sacrifice of simulative precision, into 

 the single LsCa-portion of Fig. 14 — whose synthesis is thereby indi- 

 cated. (See also Patent No. 1167693.) 



By combining the conductance-simulator of Fig. 19 and the sus- 

 ceptance-simulator of Fig. 17 there results the admittance-simulator 

 of Fig. 21. But it is found that theL4'C4'-portion and theLs'G'-portion 

 can be combined, without ajipreciable sacrifice of simulative precision, 

 into the single L'aCi-portion of Fig. 15 — whose synthesis is thereby 

 indicated. (See also Palciil No. H37422.) 



IV\RT \ I 



Nf.tworks for N(>N-Dissii'.\rivE Lo.-vuiiu Links with DisiKinuTiiD 

 Inductance 



IVom the latter jiortion of Part III it will be recalled that the 

 appro.ximate effect of small distributed inductance is to alter slightly 



