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

Figure 15

(a) Measured antenna 3D radiation patterns for the four-element MIMO antenna worn on the phantom hand. (b) Simulated 3D radiation patterns for the four-element MIMO antenna (at 5.5 GHz) worn on the wrist model. (c) Measured 2D radiation patterns (at 5.5 GHz).

(a)

(b)

(c)