Low ohmic loss cylindrical radial superlattice conductors using alternatingly electroplated magnetic/nonmagnetic thin films for microwave applications

Abstract

In this work, the first experimental demonstration of the Cylindrical Radial Superlattice (CRS) conductors made of alternating magnetic/nonmagnetic layers grown on a radial conductor operating in the microwave range is reported. The CRS structure has been employed to force the high frequency current to flow through the volume of the conductor by suppressing the generated eddy currents inside the conductor which will lead to reduction of the conductor loss. Also, the implementation of the highest Q-factor microwave inductor made of the CRS conductor with a Q-factor of 45 at 18 GHz, which is attributed to low conductor and dielectric losses, has been demonstrated.