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BELL SYSTEM TECHNICAL JOURNAL 



sented by ^3+, iz-, 4+, etc. No currents flow at the sideband fre- 

 quencies of the even harmonics of the carrier, «2+. ^2-, • • ■ • 



If Fo should be replaced by an equal amplitude generator at any of 

 the sideband frequencies, Fi+, F2_, etc., then the input current would 

 in any case be 



Y}± T =i^ 

 2R ' '" 2R ' 



Ii+ = 



etc. 



The correspondence between the magnitudes of these entering currents 

 and the magnitudes of the output currents at the modulation product 

 frequencies are shown in Table I. Reciprocal relations between the 



TABLE I 



Correspondence between Currents Entering and Leaving a 

 Reversing-Switch Modulator 



Note : A current of the frequency indicated in the first column will be modulated 

 to produce the components written on the same line, the magnitudes of which are 

 the magnitude of the generating current multipled by the factors at the top of the 

 columns. 



_W 



1 



*k = -5-4=4 



V 



+ 1 



driving voltage at one frequency and the output current at another 

 frequency are obvious. 



