A Note on Nonlinearity in Transducers Used in Communication

The characteristic of a nonlinear transducer can usually be expanded in a power series, when it is not simply a single term raised to some power. For those cases where the characteristic may be so expressed, a general law or equation is derived for the characteristic of a compensating transducer, that is, a transducer which in combination with the first transducer will produce over-all linearity. It is shown, moreover, that when the series for the distorting transducer is not sufficiently rapid in its convergence, it becomes impractical to realize the necessary compensating transducer. A simple case of an actual compensating transducer used to correct a square-law characteristic is briefly described.