Significance of Phase Center in Satellite Antenna Designs

Phase center of antennas in design of satellite antenna payloads is an important parameter that could be used to manipulate the antenna radiation patterns. Two design examples are shown, one for reflector antennas and the other for phased arrays, where phase center plays a key role in shaping the antenna radiation patterns to meet the requirements. These include antenna designs with frequency-variant phase center and frequency-invariant phase center.