Single-Layer End-Fire Substrate Integrated Waveguide Antenna Systems

This paper presents an overview of a group of substrate integrated waveguide (SIW) antenna design activities at the University of Victoria. Emphasis is placed on single-layer SIW prototypes with end-fire characteristics which can be fabricated by conventional printed-circuit board techniques. Examples highlight antenna combinations for circular polarization, a system for tracking applications, a Butler matrix, and right-angled power dividers as feed components. Individual antenna elements include SIW horns, an antipodal printed dipole and antipodal Vivaldi elements. Keywords—substrate integrated waveguide; printed-circuit antennas; feed systems.