Novel compact dual-band artificial magnetic conductors for Wi-Fi applications

Dual-band compact artificial magnetic conductors AMC have been presented for Wi-Fi frequency bands. The periodicity of both the structure is less than 0,13λ₀, where λ₀ is the free space wavelength of the lower resonant frequency, making it very compact. The structures act as AMC for 2.5 and 5.5 GHz WLAN bands providing good frequency stability for both TE and TM polarizations when the angle of incidence is varied from 0 to 60°. A comparison between the two designs i.e. one with via and other without via has been presented and these are compared with a third AMC given in literature. The proposed AMCs have increased bandwidth performance, better frequency stability at oblique incidence and are ultra compact for practical communication application.