Planar H-plane Horn Antenna Based on Groove Gap Waveguide Technology

Abstract

H-plane horn antenna using gap waveguide technology is proposed. The advantage of this technology is its air-filled feature, which improves the impedance matching compared with substrate integrated waveguide horn antennas. Corrugated walls as soft surfaces are used on the outer surfaces of the upper and lower horn plates, which act as barriers around the aperture of the antenna and reduce its back lobe levels. The bandwidth of the antenna for |