Abstract
This article presents a quad-band multiple-input-multiple-output (MIMO) antenna for the Internet of Things (IoT) applications. The proposed antenna consists of four quarter-wavelength asymmetrical meandered radiators, microstrip feed lines, and modified ground planes. The antenna elements are arranged in a chiral pattern to improve isolation between them, with two radiators and two ground planes placed on the front side of the substrate and the other two on the back side. The MIMO antenna has an operating bandwidth (S11 ≤ −10 dB) of 1.76–1.84 GHz, 2.37–2.56 GHz, 3.23–3.68 GHz, and 5.34–5.84 GHz, covering GSM, WLAN, WiMAX, and 5G frequency bands. The isolation between the radiating elements is greater than 18 dB in the operating bands. The peak gain of the antenna is 3.6 dBi, and the envelope correlation coefficient (ECC) is less than 0.04. Furthermore, the proposed antenna is validated for IoT-based smart home (SH) applications. The prototype MIMO antenna is integrated with a commercially available ZigBee device, and the measured values are found to be consistent with the expected results. The proposed MIMO antenna could be a good candidate for IoT systems/modules due to its low profile, compact size, lightweight, and easy integration with wireless communication devices.
Highlights
The Internet of Things (IoT) is a fast-growing technology that connects physical objects, household appliances, wearable devices, sensors, servers, and other wired or wireless networks [1]
The antenna element consists of a radiator, composed of four top view and bottom view of the proposed antenna element are shown in strips varying lengths, a microstrip line consists feed, and taperedcomposed ground plane
Figure 9photographs shows the measured coefficients of the proposedand me MIMO antenna
Summary
The Internet of Things (IoT) is a fast-growing technology that connects physical objects, household appliances, wearable devices, sensors, servers, and other wired or wireless networks [1]. These devices can process data and send it to each other without manual intervention. Various types of multi-band antennas, such as dipole, patch, monopole, and dielectric resonator, have been proposed in the literature [3,4,5,6,7,8,9,10,11,12]. A Y-shaped radiator with a dual ring resonator [13], a Y-shaped radiator with an L-shaped slit etched from the ground plane [14], a rectangular patch integrated with a step-shaped microstrip feed line [15], L-shaped and
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
