364 THE BELL SYSTEM TECHNICAL JOURNAL, MARCH 1956 



EFFI. 



c 



(SAT.) 3 



0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 



b 



Fig. 3 — The saturation eff./C versus b, for QC = 0.2 C = 0.1 and k = 1.25 

 and 2.50. 



If the output circuit is matched by cold measurements, the backward 

 wave must be zero at the output end, z = D. This determines Ci , that is, 



„ ZqIq c 



^1 = ~^rPT 



or 



Cie 



jut+Toz 



4C 2(1 + bC) 



ZqIq C 



//dai(t/)Y I / da2{y) Y ro(2+bc)D+ji 



dai{y)V / da2{y) y 



4C 2(1 + 6C) y \ dy )z=o \ dy Jz^d (26) 



The backward wave therefore consists of two components. One compo- 



0.1 



0.2 



QC 



0.3 0.4 0.1 



0.2 



QC 



0.3 0.4 



Fig. 4 — The saturation eff./C versus QC for h corresponding jui = 1, 0.94 and 

 0.67 of Mi(max), (a) for C = small, (b) for C = 0.1. 



