Abstract:

A novel dual-polarized microstrip-feed horn antenna is designed in the paper.The radiation element is metal material with a conical horn hole at the center.The feeding layer adopts double orthogonal microstrip-feed planes to achieve dual-polarization.A metal reflector cavity is used to suppress backward radiation and improve antenna gain.HFSS simulation results show that the VSWR of the novel horn antenna is less than 2 in the Ku-band uplink (14.0～14.5 GHz) and downlink (12.25～12.75 GHz) and the gains of the two ports are more than 8 dB.The antenna is small in size and high in gain with microstrip-feed features,which can be used as the antenna unit of the Ku-band satellite ground communication system.

Key words: horn antenna;microstrip-feed;dual-polarized