Watchstrap-Embedded Four-Element Multiple-Input–Multiple-Output Antenna Design for a Smartwatch in 5.2–5.8 GHz Wireless Applications

<div>Comparison of the S-parameters obtained when simulation is conducted by using a wrist model, measurement is conducted by using a phantom hand, and measurement is conducted by using a human wrist: (a) <i>S</i>11 and <i>S</i>21 and (b) <i>S</i>31 and <i>S</i>41.</div>

International Journal of Antennas and Propagation

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Figure 13

Figure 13: Watchstrap-Embedded Four-Element Multiple-Input–Multiple-Output Antenna Design for a Smartwatch in 5.2–5.8 GHz Wireless Applications 