Wideband MIMO antennas using decoupling network based on signal-interference concept

Wideband MIMO antennas using decoupling network are presented, which are based on the transversal signal-interference concept. The directional coupler was designed and optimized to make up the decoupling network. Compared with the coupled antennas without the decoupling network, the isolation is more than 15 dB within 1.8-2.7 GHz. For demonstration, an integration of two antennas with the decoupling network was prototyped and measured. Good agreement between simulation and measurement is observed.