The solution of transmission-line problems in the case of attenuating transmission line

COAXIAL LINES with solid dielectric often are used as feeders. Such lines have appreciable attenuation (of the order of 1.5 decibels per 100 feet at 100 megacycles per second). Application of standing-wave method of finding the receiving-end impedance, as based on the assumption of lossless transmission line, would introduce an appreciable error, increasing with the length of the line used. The purpose of this paper is to show how by the application of the standard transmission-line theory the standing-wave method of measuring impedance can be extended to the case of transmission lines with attenuation, if the appropriate corrections are introduced. As seen from this point of view, the paper brings together and somewhat systematizes information available in the existing technical literature.