Compact Dual-Band Wide Beam Slot Antenna for WIFI Applications

In this paper, a dual-band, wide-beam compact slot antenna for 2.4/5 GHz WIFI operating bands is presented. To achieve WIFI dual-band radiation performance, the proposed antenna has two resonant modes from a multimode radiator excited by a microstrip feed structure. The proposed miniaturized slot antenna has a good dual operating band of 2.40 to 2.55 GHz and 4.87 to 5.94 GHz with $|\mathrm{S} 11|\lt -10 \mathrm{~dB}$, which covers the 2.4/5 GHz WIFI operating bands. In addition, the HPBW of the proposed antenna is about 157 degrees in the lower band and 150 degrees in the upper band. At the same time, the realized gain in the operating band is more than 4 dBi. The proposed antenna can be a good candidate for 2.4/5 GHz WIFI applications.