Four-beam Ka-band Antenna with Switchable Polarization for Satellite Communication Application

For low-earth-orbit (LEO) communication, electronic scanning antenna is desired. This paper presents a four-beam Ka-band phased array antenna system with switchable polarization. The polarization and the number of beams can be arbitrarily combined. The receive antenna system has a size of 480mm×360mm×50mm and a weight of 16kg. It is suitable for the terminal seamless switch of LEO communication.