Basic study of 79 GHz Band Resin Waffle-Iron Ridge Guide

In this paper, a millimeter wave (mmWave) transmission technology applying a waffle-iron ridge guide (WRG) technology is described. A circuit layer is molded on an aluminum plate and an acrylonitrile butadiene styrene (ABS) plate using precision machine cutting technology. The ABS resin layer would be copper plated to get conductivity. Insertion loss (IL) in the 79 GHz band is approximately 0.4 to 0.6 dB (/30mm), the performance of the copper plated product is better. The skin effect (in consideration of surface roughness) is also mentioned using 3D EM simulator. The simulation results and the measurement results are in good agreement.