Design of Printed Monopole Array Antenna with Decoupling Network For MIMO Application

This manuscript presents the design of a decoupling network and its integration with the tightly coupled printed monopole array antenna at the L-band. The manuscript describes the design flow, its related aspects for such a network and its use with array elements. The proposed monopole array antenna with decoupling network has shown ~17.54dB improvement in the mutual coupling between elements at resonating frequency and shown consistent element-wise radiation pattern properties compared to the array antenna without decoupling network. Moreover, the array antenna with decoupling network has also been evaluated for multiple inputs multiple outputs (MIMO) application, where the envelop correlation factor has been computed and compared. The presented array antenna with decoupling network offers ~0.00 envelop correlation factor at 1.26GHz frequency, which is significantly low.