Investigation of a Dual-Layer Metasurface-Inspired Fractal Antenna with Dual-Polarized/-Modes for 4G/5G Applications

In this research article, a dual-polarized compact bow-tie-shaped irregular fractal antenna with dual metasurface (DMS) for directional radiation applications is designed using dual-mode simple feeding mechanism. A short-circuited strip linked between the impedance transformation feed and radiating patch activates induced coupling modes, which are capacitive (C-mode) inductive (L-mode), respectively. The C-mode operates at 2.39–2.53 GHz, whereas L-mode 2.88–4.49 GHz. It comprises DMS positioned 0.22λ∘ from 0.016λ∘ separation 4 × array of checkerboard type hole-injected tiny unit cells on each metasurface. rectangular cavity-backed slot was employed as ground plane to emulsify reflected energy waves DMS, in order start process boresight radiation, resulting high gain suppressed backward radiations. 6.74 dBi, 7.7 dBi. For validation, miniaturized overall size 0.32λ∘ (where λ∘ free-space wavelength 2.45 GHz) fabricated measured. measured outcomes highlight its potential 4G/5G wireless applications.