A prototype array-fed shaped reflector antenna for 21-GHz band broadcasting satellite

The 21-GHz band is expected to be used to transmit signals of the next-generation broadcasting services. Thus, we have developed a wide band transponder configured with an array-fed reflector antenna that enables to combine enough power for large capacity signal transmission. In addition, it can also alter its radiation pattern to mitigate fading. We proposed an array-fed shaped reflector antenna that is an assembly of a feed-array and dual shaped reflectors. Here we evaluate the radiation patterns of the prototype proposed antenna.