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

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">825 MHz</td><td class="align_center">960 MHz</td><td class="align_center">2200 MHz</td><td class="align_center">2690 MHz</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Maximum gain (dBi)</td><td class="align_center">1.49</td><td class="align_center">2.5</td><td class="align_center">2.55</td><td class="align_center">3.1</td></tr><tr><td class="align_left">Efficiency (%)</td><td class="align_center">52</td><td class="align_center">48</td><td class="align_center">50</td><td class="align_center">48</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Measured antenna gains and total efficiency of #1.</div>

International Journal of Antennas and Propagation

tab1

Table 1

Table 1: 2 × 2 MIMO Asymmetric U-Shaped Nonuniform Slot Antenna for the 4G LTE Metal-Housing Mobile Handsets 