MEASUREMENT OF IMPEDANCE MISMATCHES 



457 



FG 



Z 



< > 



^^b 



wv 



Fig. 9 — Relation between coupling FG and termination Z. 



^k 



h 



where r — 



Fig. 10 — Multiple reflections from two planes of discontinuity. 



Va = Incident voltage 

 Vb = rVa 



Kb — Ka 



Kb + Ka 



Vo= Va-\- Vb^ Vail + r) 



V,= e~'^''Vc = e-'^' Vail + r) 

 Ve = zVd = ze-'^"- Vail + r) 



where z = 



Z - Zb 



Z + Zb 



-i2^L 



Ve = ze-^'"- Vail + r) 



Vn = —rVf = ze 



-i2pL 



F„(l + r)i-r) 



(18) 

 (19) 



(20) 



(21) 

 (22) 

 (23) 



(24) 



(25) 

 (26) 



