Wideband textile multiple-input-multiple-output antenna for industrial, scientific and medical (ISM)/wearable applications

摘要

A compact, wideband, two-element textile multiple-input-multiple-output(MIMO) antenna is presented for industrial, scientific and medical (ISM)/wearable applications. The proposed structure is composed of the Felt materialsubstrate, and the ground plane and radiating patch are formed usingShieldit~(TM) Super conductive material. The designed MIMO antenna offers awide impedance matching bandwidth (S_(11) ≤ −10 dB) of 2.00−6.23 GHz, a verylow mutual coupling of (S_(21,max)) −29.26 dB, low envelope correlation coefficient<0.01, high diversity gain ～9.95 dB, and realized gain of more than2.88 dBi, over the entire band. The prototype of the proposed antenna geometryis fabricated, and it has a size of 76 × 37 mm~2. The proposed antenna couldbe a good candidate for wearable electronic devices due to its compact size, alltextile layers, easy integration, robustness, and reasonable on-bodyperformance.