Design of low Profile, High Bandwidth Circular Patch Antenna at 28 GHz for Fifth Generation Wireless Technology

This article introduces a novel technique to develop a circular patch antenna specifically tailored for 5G wireless technology operating in the 28 GHz frequency range. By thought-fully incorporating a rectangular slot into the design on a Rogers substrate, not only does the antenna's performance get enhanced, but its bandwidth also gets expanded. This expansion in bandwidth allows the antenna to effectively cover a broader frequency range, which holds immense significance for practical applications. The compact design occupies only 8.3×8.5 mm
²
of space. Through simulations and measurements, it is demonstrated that the antenna achieves a 10 dB higher gain, ensuring a significant improvement in signal power. It delivers a bandwidth of 2.23 GHz, extending across the spectrum from 27.77 GHz to 30 GHz. The resonance analysis reveals a good return loss of -34.3 dB, indicating excellent signal matching. Furthermore, the antenna achieves a voltage standing wave ratio (VSWR) of 1.11, facilitating the effective transfer of radio frequency energy. The results indicate satisfactory performance in terms of matching, losses, and efficiency, positioning this design as a promising candidate for efficient communication in 5G networks.