L-slotted microstrip fed monopole antenna for triple band WLAN and WIMAX applications

Abstract

In this paper, a monopole antenna is presented for triple band WLAN and WiMAX applications. The antenna consists of four L-slots on a radiating rectangular patch and a truncated ground plane. The multiband characteristic of the antenna is achieved by a rectangular patch with four L-slots and bandwidth of the antenna is improved by cutting slots on truncated ground plane. The entire volume of the antenna is 29 × 34 × 0.8 mm3 which is very compact with operating bands of (2.276–2.58 GHz)/2.411 GHz, (3.585–3.623 GHz)/3.609 GHz and (5.508– 5.765)/5.56 GHz which covers operating bands for WLAN as per IEEE 802.11 a/b/g/n standards with 12 %, 1 % and 4.5 % impedance bandwidth respectively.