A Mathematical Analysis of the Kahn Compatible Single-Sideband System

A system has been proposed by Kahn for the generation of an SSB signal which may be received on an AM receiver without distortion in the receiver output signal. For this reason, the system is said to be a "compatible" SSB system. The mathematical analysis of this system is fairly simple except for that part of the circuit which performs a limiting of the input full-carrier SSB signal. It is shown that Granlund has analyzed circuits of this type in great detail and that the results of Granlund's work can be used in a very direct manner to obtain a fairly complete analysis of the Kahn system. From the resulting analysis, computations are made of the CSSB signal spectra for various input signal conditions. The theoretical results are also used to predict certain system operating characteristics. The results obtained are presented without comment as no attempt is made to evaluate the Kahn system relative to other compatible SSB systems which have been proposed.