Beam Switching of Massive MIMO Antenna for Base Station using Low-loss Passive Phase Shifter

Beam coverage switching of sub-6 GHz massive MIMO antenna is presented using low-loss passive phase shifter. A single-bit phase shifter which minimizes the loss caused by series resistance of a switch is designed and integrated with antenna. The massive MIMO array is fabricated and measured to examine beam switching function while maintaining low-loss characteristics.