A K-band SIW High Gain Planar Antenna with Parabolic Metalized Via-holes Reflector

In this paper, a high gain planar antenna with parabolic reflector made by metalized via-holes is proposed. An H-plane horn antenna based on the substrate integrated waveguide is used as a feed on offset focus position of the parabolic shaped metalized via-holes. Reflection coefficient of the antenna is below -10dB from 20 GHz to 30 GHz. The gain of the planar antenna is 17 dB at the frequency of 25 GHz, which is 8.5 dB higher than the gain of the feed of H-plane horn antenna.