A Low-Profile Wide-Band Directional Antenna using A Dual-Layer Tapered Shape Artificial Magnetic Conductor Surface

In this paper the design of a low-profile wide-band directional antenna using a dual layer tapered shape artificial magnetic conductor conductor is presented. It consists of a wideband bow-tie slot antenna backed by $5 \times 5$ unit cell array of artificial magnetic conductor. The proposed antenna leverages the advantages of dual-layer AMC configuration, combining their effects to achieve enhanced bandwidth and radiation characteristics. The dual-layer AMC provides the ±90 degrees reflection phase bandwidth of 1.92 GHz. The proposed wide-band directional antenna operates from 4.04 GHz to 10.62 GHz thus exhibits −10 dB impedance bandwidth of 89.68%. The overall dimensions of the proposed antenna are $60 \mathrm{~mm} \times 60 \mathrm{~mm} \times 6.7 \mathrm{~mm}$. It also exhibits peak gain improvement of 3.57 dB at 5.0 GHz and 4.32 dB at 7.6 GHz when compared to the antenna without AMC.