Abstract
A Multiple Input Multiple Output(MIMO) patch antenna array with 2 patch antenna elements is designed to operate at 2.4 GHz ISM band. The isolation between antenna elements is increased by reducing the mutual coupling with the help of metamaterial based Split Ring Resonator. The MIMO antenna has a dimension of $52.3 \times 128\times 1.6mm^{3}$ and the dimension of single patch antenna is $52.3 \times 62\times 1.6mm^{3}$ . The proposed design minimizes the gap between individual antenna elements to $0.1\lambda$ . With the insertion of three SRR unit cells between the patch antenna elements, a 5 dB improvement in the coupling isolation is achieved in the antenna array. The antenna system has a return loss of −19 dB with coupling isolation of −22.9 dB. The far field gain of the MIMO antenna array is 2.56 dBi at 2.4 GHz.
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