Coplanar Waveguide Integrated with Micro-Strip Line on a Through Glass Via Substrate

Abstract

A wideband coplanar waveguide integrated with micro-strip line on a through glass via substrate is presented. The design of the ultra-wideband micro-strip to coplanar waveguide transition, which are used at input/output ports. Vertical via connecting the top coplanar waveguide to the ground plane on the bottom of the substrate to achieve the shortest signal transmission distance. Simulated the maximum to limit the minimum thickness of the glass dielectric layer (εr=5.5) from 200μm to 500μm have all implemented up to 30Gz frequency band. We have designed a coplanar waveguide with the center conductive width of 120μm and space of 22μm to connecting a micro strip line with the conductive width of 210μm, finally reaching 50Ω impedance matching of overall structure. The simulation results have a low insertion loss of less than 0.09dB and the reflection loss of below -20dB at 30 GHz frequency band.