AMC backed circularly polarized dual band antenna
for Wi-Fi and WLAN applications

Gande B. G. Tilak – Sarat K Kotamraju – Boddapati T. P. Madhav
– Korada C. S. Kavya – Manikoda V. Rao

   In this article the design and implementation of dual band circularly polarized antenna which is backed with AMC is presented. The proposed antenna consists of a novel heart shaped concentric ringshaped patch attached to meander line. The dimension of the antenna without AMC is 0.24 λ₀×0.140λ₀×0.012λ₀ and with AMC 0.43λ₀×0.43λ₀×0.32$λ₀ and designed on a commercial FR4 substrate. The antenna gets worked at dual band applications such as 2.4 GHz (Wi-Fi) operates from 2.3 GHz to 2.5 GHz and 5.2 GHz (WLAN) operates from 4.7 GHz to 5.9 GHz and also gets circular polarization from 2.3 GHz to 2.5 GHz (200 MHz ) and 4.95 GHz to 5.40 GHz (450 MHz) is achieved. In this article the proposed model is investigated towards circular polarization, radiation patterns and current distributions by varying parametric analysis is carried to analyze overall performance of antenna with and without AMC.

Keywords: dual band, AMC, circular polarization

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