Abstract
In order to keep pace with the growing research and development on next-generation reconfigurable 5G wireless devices, this research presents a new design of flexible and low-cost 5G antenna. Instead of a conventional design, two identical back to back bow-tie antenna elements have been used on the same side of the Polyethylene terephthalate (PET) substrate with a dielectric permittivity of 3.2, loss tangent of 0.022, and a thickness of 135μm. The proposed coplanar waveguide (CPW) fed antenna is fabricated by inkjet printing using silver nanoparticles ink. The designed single element antenna is of dimensions 18.5 mm x 9.4 mm. The proposed antenna shows that it operates over a 24.2-31.5 GHz (26% fractional bandwidth, FBW) range with a return loss of 10 dB or less. The solo-element exhibits an average 5dB peak gain within the entire frequency spectrum and 99.34% of radiation efficiency with the consistent radiation pattern. The fabricated antenna was tested under different bending conditions and showed satisfactory performance. Based on the mentioned attractive results and reconfigurable characteristics of the PET substrates, the proposed antenna was found to be suitable for the 5G flexible, conformal, and body-centric applications.
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