REJECTOR AMPLIFIER 



The transmission characteristic for the pair in tandem is thus given by 



Ko„t _ A 1 _ A 



Kin ,^,^ ■l-4y(7 l-4ja + A 



1-4/(7 

 If X >1 



Fout 1 



_ />^ - — 



This, however, is of the same form as the expression for the parallel T 

 alone, except for an A-fo\d expansion of the scale of frequency. The effect 

 is thus to squeeze the parallel T characteristic to l/A of its usual width. 



REFERENCES 



^ Morris, G. W. and Dawe, P. G. M. A bandpass filter for low frequencies 

 Electron. Engng. 25 (1953) 365 



2 Beattie, J. R. and Conn, G. K. T. A simple low-frequency amplifier Electron. 

 Engng. 25 (1953) 299 



^ Valley, G. and Wallman, H. Vacuum Tube Amplifiers New York; McGraw- 

 Hill 



^ SowERBY, J. Mc G. Electronic circuitry Wireless World 56 (1950) 223 



^ Shaw, J. C. The design of phase shift oscillators and filters Electron. Engng. 

 28 (1956) 216 



207 



