Simple-Design Slot-Cut Quad-Band Antenna for mm-Wave 5G Applications

This article presents a novel quad-band antenna for mm-wave
$\boldsymbol{5\mathrm{G}}$
applications. The quad-band characteristics have been achieved by etching the u-slot along with the two open-ended slots from the top of the rectangular patch. The antenna is having a patch size of 2.25
$\boldsymbol{\times 3.04}$
mm
²
. The designed antenna is having a maximum efficiency of 99.24% and the AR value
$\boldsymbol{ < 3\text{dB}}$
in the range (43.270-43.673) GHz. The proposed simple structure compact antenna has been designed using Ansys HFSS software and is useful for the mm-wave
$\boldsymbol{5\mathrm{G}}$
communications.