DEMONSTRATION OF LOW LOSS RF CONDUCTOR IN KAAND V BANDS USING CU/FE MULTILAYERS FOR 5G AND MILLIMETER WAVE APPLICATIONS
Renuka Bowrothu and Yong-Kyu Yoon
In this paper we report the first demonstration of a low loss Radio Frequency (RF) metaconductor in K a and V bands consisting of multiple nanolayers of copper (Cu) and Iron (Fe). Maximum 32 % RF resistance reduction is achieved using the Cu/Fe metaconductor compared with the solid Cu counterpart in 30-67 GHz range which covers major millimeter (mm) wave frequency bands for 5G applications. Design and simulations are performed using High Frequency Structural Simulator (HFSS, ANSYS Inc.) and experimentally verified using 1 mm long Coplanar Waveguide Transmission Lines (CPWTL) which are microfabricated using 5 pairs of 150 nm thick Cu and 25 nm thick Fe.
Keywords: 5G, copper, coplanar waveguide transmission lines, HFSS, iron, metaconductor and millimeter waves