Design and Development of Additive Manufactured 5G IoT Antenna for High Performance Wireless Sensor Application
DOI:
https://doi.org/10.15662/IJEETR.2026.0802220Keywords:
Additive Manufacturing, 3D Printing Technology, 5G Communication Systems, Internet of Things (IoT), Wireless Sensor Networks (WSN),, Dielectric Resonator Antenna (DRA), Sub-6 GHz Frequency Band, Antenna Design and Optimization, High-Gain Antenna, Wideband Antenna, Electromagnetic Simulation, Rapid Prototyping, Smart Agriculture Applications, Industrial IoT, Low-Power Communication SystemsAbstract
In this work, the inverted micro-Stereolithography (SLA) is used to show the potential of such additive manufacturing (AM) technology at prototyping super-shaped dielectric resonator antennas (S-DRAs) rapidly and accurately. The S-DRAs, which exhibit 3D complex geometries, were designed to operate at 3.5 GHz, suitable for the assessment of 5G communications in the mid band. Initially, a cross-starred-shaped S-DRA was designed and manufactured via the inverted micro-SLA by means of a photopolymer resin as material. As no information about the used material was available from literature and supplier, the dielectric properties of the photopolymer resin were characterized. Moreover, in the view of challenging further the SLA capability, several prototypes, based on the cross star shaped geometry but exhibiting a twist of variable angles along the longitudinal axis, were fabricated and tested.In order to compare the antennas performance in relation to the material volume and sizes, rectangular and cylindrical DRAs were also realized using same material and technology. Scattering parameter S11, gain, bandwidth (BW), efficiency and co- and cross-polarization of all antennas were measured. The experimental results showed that twisted S-DRAs exhibit same performance of the basic cross-starred-shaped antenna, due to the invariance to symmetry of the basic Gielis geometry. The measured gain is about 2.5 dB over a range of 1 GHz in the frequency range of interest; the BW measured for all S-DRAs is about 10%, whereas the efficiency is about 80% at 3.5 GHz. Finally, better performance in terms of bandwidth is shown by the S-DRAs, considering their dramatic volume reduction (85%) compared to classic rectangular and cylindrical DRAs and other DRA examples already reported in the state of the art.
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