function f = coaxL(muR,outerD,innerD)
% coaxL(muR,outerD,innerD) - inductance of coaxial cable
%  per unit lenght
%  muR - relative permeability of dialectric (1 for air)
%  outerD - diameter of outer coax
%  innerD diameter of inner conductor

mu0=4*pi*10e-7;
%mu0 - absolute permeability of air (vacuum)

f=mu0 .* muR .* (log(outerD ./ innerD)) ./ (2 .* pi);
