Abstract
A transparent dual octagonal split ring-shaped resonator connected by a horizontal strip is proposed for tri-band applications. Stub-loaded microstrip line fed structural design of radiator consists of two slotted octagonal-shaped rings connected via a strip on the top with the partial ground at the back. The low profile (40×25 mm2) radiator achieves impedance bandwidth of (46.08%) 1.62-2.59,(7.78%) 3.95-4.27, and (12.60%) 5.13-5.82, respectively. A bi-directional (dipole shaped) radiation pattern with maximum gain and minimum efficiency of 2.5 dBi and 52%, respectively is achieved. Transparency above 80%, low profile structure, and tri-band operation make the antenna a good contender for WLAN and Sub-6 GHz 5G applications. Good correlation is observed for the modeled and experimental parameters. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.
Highlights
Wireless Communication has become a crucial part of today's era of 4G and 5G technology
A rectangular tri-band antenna is designed for an application covering WiMAX and WLAN, that received problems while fabricating small shorts without the presence of air and got 0.8 GHz deviation w.r.t simulated results [13]
The lightweight transparent structure consists of a Plexiglas (thickness = 1.48 mm, dielectric constant = 2.3 and tan δ = 0.003) that serves as a substrate and AgHT-8 as patch and ground material, respectively
Summary
Wireless Communication has become a crucial part of today's era of 4G and 5G technology. A rectangular tri-band antenna is designed for an application covering WiMAX and WLAN, that received problems while fabricating small shorts without the presence of air and got 0.8 GHz deviation w.r.t simulated results [13]. It exhibits multiband matching but does have a complex structure. The transparent antenna in [25], is a slotted split ring resonator with the slot line extended to the patch which covers bands of 2.4 and 5.26 GHz, respectively It is capable of indoor WLAN applications whereas the opaqueness issue has been raised. The satisfactory agreement between the measurement and numerical computations of RF performance indicates the technical potential of an octagonal ring-shaped transparent antenna for interfacing the antenna in devices using WLAN and sub-6 GHz 5G applications
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