Abstract
AbstractIn this paper, wide-band, multiple-input-multiple-output (MIMO) antenna system is proposed for mobile applications. The MIMO is an emerging field which aims to improve the signal-to-noise ratio in communication channels. The MIMO antenna system consists of two compact monopole antenna elements for 5G standard covering bands (n48, n77, n78) between 3.3 and 4.2 GHz. The dimensions of the board are equal to 100 × 60 × 1.6 mm, which is identical to typical smartphone’s back panel. The size of antenna is only 10 × 7.8 mm. The length of the antenna trace is for about λg/4 which has been L-shaped folded to make it resonate at desired frequency. Both antennas give better than −10 dB return loss and 80% efficiency. The antennas are placed at the PCB corner and the center edge of the board, with both positions supporting optimum MIMO performance. This compact size of antenna allows the designer the freedom to allocate the other electronic components. The proposed antennas are well suitable for small form factor wireless devices.Keywords5GNRMIMOMonopole antennaPlanarMobile device
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