A Novel dual-band microstrip antenna for WLAN applications

Abstract

A novel compact microstrip fed dual-band microstrip antenna for wireless local area network is presented. The antenna generates two separate resonant modes to cover 2.4/5.2 GHz WLAN bands. The lower resonant mode of the antenna has an impedance bandwidth (S11<-10 db) of 220 MHz (2340-2560 MHz), which easily covers the required bandwidth of the 2.4 GHz WLAN, and the upper resonant mode has a bandwidth of 380 MHz (5040-5420 MHz), covering 5.2 GHz WLAN band. The proposed antenna will have smaller size (16 mm times 16 mm, epsivr = 2.45) due to no ground plane extension.