Microstrip Array Antenna Using Proximity Coupled and Dolph Chebyshev Distribution for Wi-Fi 6E

This article investigates the power distribution of square patch antennas as described by Dolph Chebyshev. Experimental research methodologies, including fabrication, measurement, and optimization of antenna parameters, were utilized in this study. By applying the Dolph Chebyshev distribution, the sidelobe caused by an antenna modification involving multiple elements can be pressed. Three elements of square-shaped configuration comprise the arrangement antenna, which functions at a frequency of 6.175 GHz. In order to achieve an expanded frequency range, every patch element is coupled via proximity coupling to a 50 Ω SMA connector. The configuration antenna is constructed utilizing two strata of FR-4 dielectric substrate, each measuring 0.8 mm in thickness and measuring 68.7 mm by 50.8 mm. The simulation yielded a bandwidth of 252 MHz, whereas the measurements indicated a bandwidth of 159 MHz. The simulation demonstrated a gain exceeding 8 dB, whereas the measurements indicated a gain of 11 dB, and the sidelobe was −14.8 dB.