A new ultra-low impedance transmission line

THERE ARE THREE CLASSES of dielectrics that can be used to fabricate low-impedance transmission lines: epoxy or polymer, normal high-dielectric-constant materials such as the titanates or rare earths, and barrier or layer dielectrics. However, if these dielectrics are used for achieving ultra-low characteristic impedances (Zo = 10 to 500 milliohms), the resulting line has one or more of the following disadvantages: