November 2022
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142 Reads
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2 Citations
Wireless Networks
This work presents a 12-element 360° azimuth plane scanning planar circular antenna array for compact THz wireless devices. Proposed array comprises of 12 bow-tie Yagi-Uda directional antennas, operating within 0.235–0.322 THz band where each antenna achieves a maximum radiation beam for an angle of around 30°, arranged in a circular fashion to cover 360°. Individual antennas are stamped on a silicon dioxide (SiO2) dielectric substrate having compact dimensions of 1.35 mm × 1 mm × 0.06 mm and employ gold material of thickness 5 µm as a conducting material in the top and bottom planes. Maximum peak gain of each antenna is found to be 10.4 dBi at 0.322 THz within the operating band. Three parasitic elements are employed as directors to enhance the directional properties. Initially, a single element bow-tie Yagi-Uda antenna design is presented and then followed by a 6-element and 12-element circular antenna array design. Exhibiting compact dimensions, higher directivity, better performance and simple design lead to a suitable module for smart THz wireless scanning devices in the range of IEEE 802.15.3d (0.252–0.325 THz) standard and H-band (0.22–0.32 THz).