Dipole antenna with a spiral strip for WLAN applications

Abstract

This paper proposed a bent dipole antenna with a spiral strip on the other side for dual band WLAN applications. The bent dipole structure keeps the antenna with compact size and operates the IEEE 802.11 b/g (2.4 ~ 2.484 GHz) application band. In addition, the spiral strip excites higher resonant modes for the purpose of 802.11a (5.1 ~ 5.825 GHz). Beside the dual band application, the overall dimensions 38 × 8 × 0.8 mm3 can be easily applied in small-size portable devices. The simulated radiation patterns reveal omni-directional patterns in the three operating bands.