Abstract
In this work, using characteristic mode analysis, a multi-layered nonuniform metasurface structured antenna has been optimized. The driven patch of square structure and the parasitic patch elements of circular radiating cross-slotted meta-structure are used in the proposed model. The modal significance characteristic angles and surface currents are analyzed based on characteristic mode to optimize the nonuniform structures. The antenna is resonating between 5.5–6.1 GHz, covering WLAN applications with an average gain of 7.9 dBi and efficiency greater than 90%. Transient mode, terminal mode, and eigenmode-based analyses are performed on the proposed design, and comparative analysis has been presented in this work. The prototype model fabrication and real-time measurement analysis with simulation results matching are presented for application validation.
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