210 



BELL SYSTEM TECHNICAL JOURNAL 



that of Li , and the shunt susceptance is now that of the shunt resonant 

 circuit consisting of d (the effective capacitance of the resonators) and L2 . 



Fig. 4.26 — The final representation of the circuit of Fig. 4.11. 



Fig. 4.27 — The phase characteristic of the circuit of Fig. 4.11. 

 The transverse resonance, B2 = 0, occurs at a frequency 



(jiT = \/C2jL2 



Near this frequency the transverse susceptance is given by 



Bt = ICii^ — cor) 



The longitudinal resonance occurs at a frequency 



a)L = \^lC2UUI{Lx + 2L2) 

 and near cji, , 



Bl = Ciioj — Ul) 



(4.54) 



(4.55; 



(4.56) 

 (4.57) 



These are just the forms we found in connection with the structure of Fig. 

 4.10; but we see that, in the case of the circuit of Fig. 4.11, the effective 

 transverse capacitance is always twice the effective longitudinal capacitance 

 {Cl/Ct = 1/2 in Fig. 4.19), and that ojl > oor for attainable volume of Li. 



