A Switched Parasitic Yagi-Uda Diversity Antenna Used for MIMO Base Station

A switched parasitic yagi-uda diversity antenna for MIMO base station is presented.This diversity antenna system is composed of switched parasitic yagi-uda antennas and makes full use of the base station space.It contains antenna array along Z-direction to achieve array gain while uses the reconfigurable radiation pattern to get pattern diversity in the azimuth plane.Using it in the experimental MIMO system shows that this diversity antenna system can increase channel capacity and decrease BER of the communication system.