Design and Fabrication of a Broadband Millimeter Wave Rectangular-Metallic to Dielectric Rod-Waveguide Adaptor

We have designed and fabricated a plastic power adaptor operating in the millimeter range by commercially available injection-molding methods. Both numerical simulations and experimental results demonstrate that broadband and low-loss energy transfer between metallic and dielectric waveguides have been realized by using the fabricated plastic adaptors. The results show that the fabricated adaptor can be applied in practical millimeter wave functional devices.