Abstract
A dual-port transparent multiple-input multiple-output (MIMO) antenna resonating at sub-6 GHz 5G band is proposed by using patch/ground material as transparent conductive oxide (AgHT-8) and a transparent Plexiglas substrate. Two identical circular-shaped radiating elements fed by using a microstrip feedline are designed using the finite element method (FEM) based high-frequency structure simulator (HFSS) software. The effect of the isolation mechanism is discussed using two cases. In case 1, the two horizontally positioned elements are oriented in a similar direction with a separate ground plane, whereas in case 2, the elements are vertically placed facing opposite to each other with an allied ground. In both cases, the transparent antennas span over a −10 dB band of 4.65 to 4.97 GHz (300 MHz) with isolation greater than 15 dB among two elements. The diversity parameters are also analyzed for both the cases covering the correlation coefficient (ECC), mean effective gain (MEG), diversity gain (DG), and channel capacity loss (CCL). The average gain and efficiency above 1 dBi and 45%, respectively with satisfactory MIMO diversity performance, makes the transparent MIMO antenna an appropriate choice for smart IoT devices working in the sub-6 GHz 5G band by mitigating the co-site location and visual clutter issues.
Highlights
The advent of 5G that leads to delivering minimal lag and allowing data transfer at a larger volume is emerging as the best choice for wireless communications in recent times.A lot of new opportunities are provided by this technology, and it is capable of doing much more than improving the network connection. 5G is divided into sub-6 GHz and mm-wave bands where both have their perks [1]. 5G will enable the existing technology for communication to move a lot further
The antenna design with vertically positioned elements (Case 2) with connected ground shows an almost similar performance when compared to the horizontally positioned multiple-input multiple-output (MIMO)
The −10 dB impedance bandwidth (IB), ranging from (5.61%) 4.67 to 4.94 GHz with isolation greater than 15 dB is achieved between inter-elements in case 2
Summary
The advent of 5G that leads to delivering minimal lag and allowing data transfer at a larger volume is emerging as the best choice for wireless communications in recent times.A lot of new opportunities are provided by this technology, and it is capable of doing much more than improving the network connection. 5G is divided into sub-6 GHz and mm-wave bands where both have their perks [1]. 5G will enable the existing technology for communication to move a lot further. The advent of 5G that leads to delivering minimal lag and allowing data transfer at a larger volume is emerging as the best choice for wireless communications in recent times. The antennas for advanced technology will have to be upgraded and with devices becoming more and more compact, the need for antennas with compact structure along with fulfilling the higher user capacity is in very much demand. One such solution for overcoming the space requirements, transparent antennas, which are optically transparent and causes no visual clutter that can be interfaced anywhere without any location issues, can be very well utilized [2,3]. Transparent antennas are a good alternative to their conventional counterparts, as they provide a good value of conductivity along with optical transparency
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