The Rigorous and Approximate Theories of Electrical Transmission Along Wires

THE theory of electrical transmission along straight parallel guiding conductors is of fundamental importance to the communication engineer. In its original, and largely in its present day form, it involves only relatively simple concepts which go back to the early work of Kelvin and Heaviside. In accordance with these concepts the transmission phenomena are completely determined by the self and mutual impedances of the conductors and the self and mutual capacities (together with the dielectric leakage). As a consequence, the phenomena are completely expressed in terms of the propagation constants and corresponding characteristic impedances of the possible modes of propagation deducible from these underlying concepts.