Compact Dual-band Slot Antenna for WIFI Applications

This paper proposes a new type of miniaturized dual-band slot antenna that can be used in the WIFI band. It is proposed that the antenna is fed by the L-type microstrip, and three consecutive slots are opened in the floor to make resonance at 2.45 GHz and 5.8 GHz. The slots in the floor cut off the current and extend the current path. The proposed antenna is in the form of standing wave resonance at two frequencies. The resonant frequency of the antenna can be adjusted by changing the length of the slot. The low frequency band is 2.42-2.49 GHz, and the high frequency band is 5.63-6.22 GHz, and the size of the antenna is 20*21 mm² (0.29*0.31λ@ 2.45 GHz). The antenna structure is simple and easy to integrate.