Sidelobe Reduction Using Proximity Coupled Dolph Tschebyscheff Array Antenna for Wi-Fi 6E

This paper examines the configuration of an array antenna featuring a rectangular patch and a power distribution technique known as Dolph Tschebyscheff. The application of Dolph Tschebyscheff distribution aims to suppress unwanted sidelobes that arise from modifying the antenna with multiple elements. The array antenna consists of three rectangular elements and operates at a frequency of 6.175 GHz. Each patch element is supplied using a proximity coupling technique to achieve a broad bandwidth. The stacked antenna is constructed using two layers of FR-4 dielectric substrate, each measuring 68.7 mm $\times 50.8$ mm with a thickness of 0.8 mm. The simulation results demonstrate a bandwidth of 295 MHz, a sidelobe level of -14.8 dB, and a gain exceeding 8 dBi at approximately 6.175 GHz. With its wide bandwidth, desirable gain, and low sidelobe characteristics, the designed stacked antenna is suitable for applications in Wi-Fi 6E.