LAUSR

In this letter, we propose a novel highly isolated transparent 2 × 2 multiple‐input multiple‐output (MIMO) antenna based on a micro metal mesh film. The conductive material of the MIMO antenna comprises a micro‐metal mesh structure made of thin copper strips, providing a sheet resistance of 0.05 Ω/sq and a transparency of 75%. The radiating patches of the MIMO antenna are fixed onto one side of an acrylic substrate, while the ground plane is attached to the opposite side. High isolation can be attained by arranging the radiating patches orthogonally and etching a novel cross‐shaped slot on the ground. The transparent 2 × 2 MIMO antenna is successfully fabricated. The results of the fabricated antenna demonstrate a center frequency of 4.9 GHz, a bandwidth of 200 MHz, and a gain of 5 dBi. The isolation between the orthogonal antennas is 33 dB, while the parallel antennas exhibit an isolation of 44 dB. The correlation between the wireless channels is less than 0.003 over the bandwidth.