A New Structure for Broadband Transition Between Differential Stripline and Differential GCPW

In this paper, a new structure for broadband transition between differential stripline (DSL) and differential grounded coplanar waveguide (DGCPW) is presented for probe test and high-speed data transmission application. The proposed structure is designed under low temperature co-fired ceramic (LTCC) technology. A stepwise structure in the transition is utilized to eliminate additional vias on signal traces. Low insertion loss and low reflection up to 60 GHz are demonstrated by full-wave simulation.