2 × 2 MIMO Asymmetric U-Shaped Nonuniform Slot Antenna for the 4G LTE Metal-Housing Mobile Handsets

Figure 1

(a). Geometry of the proposed antenna for 2 × 2 MIMO 4G LTE full-band operation. (b). The proposed antenna chiseled in the metal-housing mobile handset (three-dimensional structure). (c). Planar dimensions of the proposed antenna (unit: mm). (d). Implemented prototype of the proposed antenna.

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