104 BELL SYSTEM TECHNICAL JOURNAL 



in which the angle X^ is defined by 



(22) X, ^. ^-^SO" - 2^" degrees, cr = 0, •••,(«- 1). 



Because all the paS are real in this Tchebycheff case, corresponding net- 

 works can be made up of sections of the simple type indicated in Fig. 3. 

 In one of the two phase-shifting networks there will be one section for each 

 positive pa, and it will be given by 



L= ^ C = ^ 



pa Ropa 



where i?o is the image impedance. Similarly, in the second phase-shifting 

 network there will be one section for each negative p„, and it will be given by. 



L = - - C = ^ 



pa Ropa' 



