Application: Coaxial transmission line. Two coaxial transmission lines, each made of an inner and outer shell are given. The radius of the inner shell is a = 10 mm and the radius of the outer shell is b = 20 mm. The lines are shown in cross section in Figure 14.32. Permittivity and permeabilities are given. Calculate:
(a) The line parameters for each line assuming perfect conductors.
(b) The characteristic impedance and phase velocity of the lines