Small WIFI/WLAN antenna for narrow boarder design

This paper presents small size and narrow border antenna for Wireless LAN (WLAN) and WIFI for laptop. The antenna occupies only 38.5×3×0.4 mm
³
, and the antenna is combined with 200×260 mm
²
copper plate to simulated system ground plane. PCB uses two layer and two components of direct-fed arm (front side) and coupled arm (bottom side). In bottom side couple arm form 1/4-λ fundamental at 2.4 GHz and its higher mode at 5.75 GHz. In front side direct-fed arm form 1/4-λ fundamental at 5.5 GHz. In far field measured, peak gain and efficiency in low and high band are 1.9-2.4 dBi and 45–61 %. Finally, experiments demonstrate that the present antenna exhibits a good performance for Narrow boarder.