Simulation results show good antenna performance
in both frequency bands such as 3.65 dBi gain, 82.47 percentage
efficiency, and 22.69 dB isolation at 2.6 GHz, and 3.92 dBi gain,
79.19 percentage efficiency, and 18.43 dB isolation at 3.5 GHz.
the
antenna with a 3-dB axial ratio has the bandwidths of 36%
and 17% for lower (2150-3100MHz) and upper (5150–6100
MHz) bands, respectively. The results of this investigation
can be used to optimize the design of multiple-input–
multiple-output (MIMO) communications.