E-band multi-layer full-corporate-feed waveguide slot array antenna

A corporate feed waveguide slot array antenna with broad bandwidth characteristics is designed for the 73.5-GHz band (E-band) in order to increase the operating frequency band and the gain at the satellite communication frequency. The proposed antennas use multi layer feeding structure for stable fabrication process. An 8×8-elements array antenna shows 27.3dBi antenna gain with over 80% antenna efficiency and 7GHz bandwidth (69.9-76.9GHz), while 16×16-elements array antenna shows 33.8dBi antenna gain with over 80% antenna efficiency and more than 7GHz bandwidth (69.85-76.9GHz), and 32×32-elements array shows 39.9dBi antenna gain with over 70% antenna efficiency and more than 6.9GHz bandwidth (69.63-76.55GHz), respectively.