1. The physical basis of line theory

Like the theory of electrical circuits from which it derives, the theory of transmission lines adopts a vocabulary and notation conventions that must be mastered. This first section, divided into four parts, is therefore devoted to an examination of various definitions and situations conducive to the formulation of a few terms specific to transmission lines. First, we'll look at the geometric properties of a line, and the uniformity criteria used to define the primary electrical parameters contained in the concepts of linear inductance and capacitance. A second part will focus on the coaxial line, whose particularly simple geometrical structure will enable us to discover dualities specific to all transmission lines. In the third part, the preceding analysis will be extended to other geometric structures, notably the bifilar line and the monofilar line composed of a conductor parallel to...