Dual-band Artificial Magnetic Conductor for Wi-Fi Antenna

This paper presents a dual-band Artificial Magnetic Conductor (AMC) for Wi-Fi antenna operating at 2.4 GHz and 5.8 GHz. The proposed AMC reflector is substituted for traditional PEC reflector to achieve a low-profile antenna configuration. The proposed AMC demonstrates dual-band in-phase reflection in the 2.32–2.48 GHz and 5.49–6.09 GHz bands, effectively covering the Wi-Fi application bands. The distance between WiFi antenna and the AMC reflector can be decreased from 0.25λ to 0.125λ (λ is free-space wavelength at 5.8 GHz). Simulated results show that the |S
11
| < −10 dB operating bands of WiFi antenna are 2.35–2.55 GHz and 5.75–5.95 GHz.