A NOVEL HIGH-ISOLATION COMPACT WEARABLE MIMO ANTENNA WITH SEQUENTIAL-ROTATED FEEDING

Modern mobile communication equipment requires small size and high integration. Therefore, it is necessary to reduce the mutual coupling between the Multiple Input Multiple Output (MIMO) antenna elements to ensure low correlation between the signals. This paper proposes a novel compact wearable MIMO antenna with a low-profile structure and high isolation, which uses 1mm thick denim as the dielectric substrate. The antenna array realizes high isolation by adopting a sequential rotation technique (SRT) with 2*2 antenna element. The bandwidth of the proposed antenna can effectively cover the band of 2.4GHz for Wireless Local Area Network. The experimental results show that the isolation between antenna elements is greater than 35dB in the required frequency range (1GHz-6GHz), which meets the requirements of wearable MIMO antennas.