A split-ring structures loaded SIW sectorial horn antenna

A novel substrate integrated waveguide (SIW) H-plane horn antenna with additional split-ring and dielectric structures has been proposed in this paper. This antenna operates at 27 GHz with a simulated gain of 10.2 dBi. It presents reduced side-lobes compared to the traditional SIW horn antenna. Fed by a coaxial connector and realized on AR450 PTFE based laminate, it is affordable, easy to fabricate and presents reasonably high gain.