Substrate Integrated Waveguide Corrugated Horn Antenna.

In this paper, a substrate integrated waveguide (SIW) H-plane horn antenna is proposed. We first optimize the antenna in size to obtain the maximum gain. The SIW horn antenna is then corrugated by adding some vias in order to further improve the beam pattern. We use half power beam width (HPBW) as a metric for this improvement. An optimization procedure is also employed to find the best places for the added vias. The horn antenna is implemented on FR4 substrate at 27 GHz frequency band for both with and without corrugation. The results show a good agreement between simulation and measurement. Moreover, it is shown that the SIW corrugated horn antenna reveals a pattern enhancement in terms of HPBW. [ABSTRACT FROM AUTHOR]