Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones

Figure 2

Comparison of the antenna pairs proposed in Case 1–Case 3. (a) S parameter. (b) Z11. (c), (d) Simulated surface current distributions of the antenna pair in Case 1 and Case 3.

(a)

(b)

(c)

(d)