Development results of a proto flight model of the Ka-band active phased array antenna for WINDS

Wideband Inter Networking engineering test and Demostration Satellite (WINDS) has been developed to realize high-data-rate satellite communication services for future multi-media applications. WINDS has Ka-band transmitting and receiving Active Phased Array Antennas (APAA) that can flexibly establish communiciation with any area by electronic beam scanning. we developed flight models of the APAA and verified its performance, including its radiation characteristics. This paper describes the design of the APAA and the development results of a flight model.