A Compact Dual-Band Modified Cylindrical-DRA Based MIMO Antenna for WLAN / X-Band Application

A novel modified cylindrical dielectric resonator-based MIMO antenna is presented for WLAN and X-band applications. On the above Rogers substrate (RT / duroid 5880), alumina or ceramics-based two-element dielectric resonator antenna (DRA) are positioned in opposition. The microstrip line excites each element and resonates in a dual-band, one band at 5.05 - 5.86 GHz and the other wideband at 8.04 - 11.38 GHz. Isolation is improved (≤ -15 dB ) by rotating the feeding line of each element at an angle of 180° opposite feed between C-DRA without any decoupling structure. The proposed MIMO antenna performance parameters like bandwidth, efficiency, gain, and isolation are investigated. Further, MIMO antenna metrics are carried out.