18.10 Coaxial Cable
Coaxial cable is a design in which one conductor is accurately centered inside another with both conductors carrying the desired signal currents (source to load and return), as shown in Fig. 18-14. Coaxial cable is so called because if you draw a line through the center of a cross-sectional view, you will dissect all parts of the
18.10.1 History of Coaxial Cable
It has been argued that the first submarine telegraph cable (1858) was coaxial, Fig. 18-15. While this did have multiple layers, the outer layer was not part of the signal-carrying portion. It was a protective layer. ...