Design of a groove gap waveguide to microstrip inline transition

In this paper the design of an inline transition between microstrip and groove gap waveguide operating at Wband is presented. The transition consists of two sections: a tapered microstrip line and a Chebyshev transformer. The simplicity of this design makes this transition appropriate for MMIC packaging at millimeter frequencies and above. Experimental validation has been carried out in theW-band. Good performance has been achieved: return loss better than 10 dB and mean insertion loss lower than 2 dB.The authors would like to thank financial support by the Spanish MINECO, Project No. TEC2013-47753-C3-1-R and Project No. TEC2016-76997-C3-1-R