Shaping Design of Waveguide Feed-Source for W-Band Reflector Antenna

This paper provides a modified design of Waveguide feed-source for W-band refledtor antenna system. Under the special of preposing feed, the shaping design is achieved by covering dielectric lens. Simulated by Ansoft HFSS，it is educed the effects of the len on antenna pattern in condition of different permittivity, thickness and shape. The simulation results evidenced that lower permittivity and thiner thickness can obtain better shaping design.