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A sophisticated rectangular patch antenna has been conscientiously designed for a variety of wireless applications. This proposed antenna achieves a multi-band resonant frequency response, seamlessly covering 6. 97 GHz, 9. 58 GHz, 14. 31 GHz, 16. 29 GHz, 17. 57 GHz, 19. 86 GHz, and 21. 6 GHz. The simulation design is crafted using CST software and a high-frequency Rogers RO 4350B substrate with a slender thickness is utilized to construct a compact patch volume of 0. 604 ₀ 0. 256 ₀ 0. 035 ₀ ~mm^3, where ₀ is a free space wavelength at 6. 97 GHz. This patch employed two slotted insets along with L shape slot in the ground to provide better return loss < −10 dB for all the resonant frequencies. It also provides nearly a perfect VSWR of less than 2 to the respective bands. The resonant frequencies nestle comfortably within the C, X, Ku, and K bands, opening doors to a wide array of 5G wireless applications, particularly in WiMAX, radar and satellite communications, scientific endeavors, and industrial communication networks.
Akter et al. (Thu,) studied this question.