REFLEX OSCILLA TORS 



525 



For a lossless resonator and unity standing wave ratio, the loaded Q is equal 

 to Qe ■ For a resonator of unloaded Q, Q» , and for unity standing wave 

 ratio, the loaded Q, obeys the relation 



\/Q = \/Qe + 1/(3.. 



(9.24) 



5-0.5 



1.5 2.0 2.5 3.0 



CONDUCTANCE, G 



Fig. 41. — Susceptance vs conductance for a resonator coupled to a 50 wave length line 

 terminated by a load having a standing wave ratio of 2. Characteristic admittance of 

 the resonator is assumed to be equal to 100 in terms of a line characteristic admittance of 

 unity. The circles mark off relative frequency increments 



Aco 



coo 



10-3, 



where coo is the frequency' of resonance. 



(2) the length of the line called 6 when measured in radians or n when 

 measured in wavelengths, (3) the standing wave ratio a. 



Figures 41 and 42 show admittance plots for two resonant circuits loaded 

 by mismatched lines of different lengths. The feature to be observed is the 

 loops, which are such that at certain points the same admittance is achieved 

 at two different frequencies. It is obvious that a line representing —Ye 



