Design and Development of 3D Printed MIMO RDRA with Two Directional Pattern Diversity for LTE Applications

Abstract

AbstractA two-port MIMO Dielectric Resonator Antenna (DRA) has been studied and developed. The proposed antenna consists of a single Rectangular DRA (RDRA). The antenna is integrated with the substrate and electrified using coaxial feed, which excites hybrid TM mode in the DR. The mutual coupling within both the ports has been reduced by employing copper shielded on two vertical walls of a rectangular cavity in the centre of DRA. A parametric study has been done to attain optimum parameters, and then the proposed antenna has been fabricated. The presented antenna with acceptable MIMO characteristics covers a measured bandwidth of 1.24 GHz (2.16 GHz – 3.4 GHz) for |S11| ≤ −10 dB, which can operate on LTE bands. The measured isolation between the two ports in the operating band is more than 25 dB. The proposed antenna renders easy fabrication and feeding with good MIMO characteristics. Therefore, the proposed 3D printable MIMO antenna is worthy for LTE applications.