Design of A Novel Broadband Transition Between Microstrip and Coplanar Stripline

A novel design for a broadband microstrip-to-coplanar stripline transition is proposed and its structure is studied in this paper. The transition is designed in back-to-back configuration and the insertion loss is optimization by using IF3D software. The measured bandwidth for ldB insertion loss and 20dB return loss is from 4.2 to 18.2GHz.