Internal MIMO antenna design for multi-band mobile handset applications

Abstract

In this research study, a new of 2×2 interior multi-band MIMO antenna is introduced for smartphone usages. The alignment of the antenna element contains a multi-mode monopole radiator with three L-shaped slits positioned at the border of the printed circuit board (PCB) of the cellular platform. The low-cost FR4 substrate is used for this new design with a total dimension of 60×135×0.5 mm3. For S11≤-6 dB, the antenna is covering the operational ranges of 0.79-0.92, 1.5-2.7, 3.5-3.85, and 5-9.5 GHz supporting IMT, PCS, UMTS, DCS, WLAN, LTE, and X bands. The premeditated MIMO antenna delivers appropriate gains different at frequency bands and worthy efficiencies, particularly at the upper bands. In addition, the considered ECC, DG, and TARC outcomes of the antenna are appropriate over the operational bands.