Octa-band reconfigurable monopole antenna frequency diversity 5G wireless

<span lang="EN-US">An octa-band frequency-reconfigurable antenna (28×14×1.5 mm<sup>3</sup>) with a broad tuning range is shown. Antenna mode1 (4.31 GHz) works in one single-band mode and two dual-band modes 2 3 (i.e., 3.91 5.9 as well tri-band 4 3.09, 5.65, 7.92 based on the switching situation of antenna. Changing capacitance for frequency reconfigurability accomplished use lumped components. The antenna’s observed spans from 3.09 GHz to GHz. all resonant bands, suggested has voltage standing waves ratio (VSWR)<1.45 except band VSWR<1.85. From 70.57% 97.93%, structure’s radiation efficiency may be calculated. For better understanding proposed far field scattering characteristics, we used CST Microwave Studio 2021. We conclude that our suitable today’s wireless applications, which need multiband multimode small antennas. Using stainless-steel wire switch, prototype design built tested verify simulation findings. reconfigurable strong concordance between simulated measured findings.</span>