The equivalent separation(s) for the self-impedance of thin strips

The concept and computation of the equivalent separation and separations, which are useful in the evaluation of the self-impedance of an electrically thin strip of current, are described. The self-impedance involves the evaluation of an integral with a singular integrand. Using the concepts of equivalent filament separation and separations, it is shown that the self-impedance of the thin strip is equivalent to the mutual impedance between two or three parallel filaments, respectively. This avoids numerical integration near a singularity.