Elementary Applications of the Scattering Formalism in Network Design

The purpose of this paper is to show the considerable simplification introduced by the scattering formalism in the derivation of many theorems of elementary network theory, and to illustrate how often this concept discloses new aspects of known results, or new connections between apparently unrelated properties. The examples chosen are somewhat unrelated, but they have been selected to emphasize the fertility of the scattering concept; for the sake of simplicity, the examples are limited to calculations at a single frequency, or deal with properties of frequency independent networks, so that the complex frequency plane is never used.