Design of Two-port MIMO Antennas without Space for Isolation

We propose a structure for a multiple input multiple output antenna which has no space for isolation. The antenna operates in a frequency range of 2.4-2.48 GHz and can achieve a high channel capability as a Bluetooth antenna. The MIMO antenna consists of two planar inverted F antennas with symmetric structure. We designed the proposed antenna using HFSS simulator, and we designed the fabricated antenna using PCB fabricator. The MIMO antenna’s isolation S21 ? -10 dB and reflection coefficient S11 ? -20 dB. The proposed antenna’s specification satisfies Bluetooth antenna’s criteria and has more space than the existing MIMO antennas, which have space for isolation.