Compact two-layer slot array antenna with SIW for 60GHz wireless applications

In this paper the design and manufacturing of a novel waveguide slot array antenna with two layers of substrate integrated waveguides is presented. This antenna which operates at 60 GHz is very compact and is suitable for a variety of 60 GHz applications which have become a hot topic recently. The feed waveguide runs underneath the main substrate layer containing the slot array and is coupled to the branches of the array via slanted slots. The proposed feeding structure results in a considerable reduction in size and eliminates unwanted radiations from the feed network.