A Surface Mountable Pyramidal Horn Antenna and Transition to Substrate Integrated Waveguide

This paper reports and demonstrates for the first time a surface mountable horn antenna and also a transition from substrate integrated waveguide (SIW) to standard rectangular waveguide for microwave and millimeter-wave system applications. The proposed horn antenna and the transition can be installed or surface-mounted on top of the metal housing of a planar SIW circuitry as easy as a "cap". The transition is designed as a waveguide quarter-wave stepped impedance transformer. Simulation and measurement results over K-band are given in this paper.