A Broadband Millimeter-Wave Rectangular-to-Coplanar Waveguide Transition

摘要

This article presents the design of a RW-to-CPW transition at U-Band. The transition achieves a low loss over a full bandwidth by using a transverse E-plane probe. In order to eliminate the parasitic mode, the coplanar line is clamped in the middle of the CPW channel and its enclosed structure does not need any filter. A waveguide bend is coupled to the transition to solve the inconvenience of the structure. To make the match much better between waveguide and CPW, the ground of the CPW line is extended slightly into the waveguide. Finally, a BTB structure is fabricated to verify the transition.