Design and realization of 1.8–2.4 GHz MIMO 2 × 2 antenna for handset application

In this paper, a dual antennas has designed and implemented for 2 × 2 MIMO handset application. The antenna element of the proposed dual port antennas of 2 × 2 MIMO handset is based on a Planar Inverted F-Antenna (PIFA) using meandering shorting strip which optimized to have frequency band operation at between 1.8 to 2.4 GHz for |S11| ≤ -10 dB. Each of the PIFA antenna used in this research has 20.5 mm × 16 mm × 9.5 mm size which is compact and small enough for the placement in handset which has a limited space. Several MIMO configuration applied for the two PIFAs to meet the required return loss (S11 and S22), mutual coupling (S12 and S21), and correlation coefficient while maintaing its size to be small enough for the placement in handset. Then, the proposed 2 × 2 MIMO antenna has been implemented on a low cost FR4 substrate . Moreover, effects of the usage of the antenna near human head and hand to the antenna parameters are also investigated.