A meta surface-inspired ring-shaped planar wideband antenna for 5G mm-wave applications

The pursuit of compact, high-speed, and broad-bandwidth systems has propelled communication technologies toward the fifth generation (5G). The need for extremely fast 5G speeds has led to the adoption of millimeter-wave frequencies. Technological advancements now allow the integration of mmwave into many contemporary electronic components, particularly antennas. This paper highlights a meta surface-inspired ring-shaped planar wideband antenna for 5G mm-wave applications. The antenna design includes a single resonator ring and a ground plane featuring a rectangular slot. The 1x4 antenna array is built using a thin 0.254 mm thick substrate RT/duroid 5880 material that has a relative permittivity of 2.3. The proposed design of 1x4 antenna array demonstrated a resonance frequency at 28 GHz with resonant response from 26.03 to 33.11 GHz, with a maximum gain of 9.7 dB and a radiation efficiency of 94%. The 1x4 antenna array has been placed with a ring structure meta surface (RSM) at a limited distance of 12 mm, obtaining a maximum gain of 11.4 dB. The proposed meta surface-inspired antenna array (MIAA) has obtained a 10 dB impedance bandwidth of (26.8 to 36.6 GHz), which covers the 5G NR bands n257/n258 (24.25-29.5 GHz). It stands out as a promising antenna for 5G mm-wave applications.