Design of a Novel Microstrip-fed Dual-band Slot Antenna for Wlan Applications

In this paper, a novel dual-band rectangular slot antenna for wireless local area network (WLAN) applications in IEEE 802.11b/g/a systems is presented. The proposed antenna, fed by a 50 Ω microstrip line, has size of 32mm × 28mm × 1.6mm. By introducing a pair of U-shaped strips, the proposed antenna can generate two separate impedance bandwidths. The prototype of the proposed antenna has been successfully constructed and tested. The low-band resonant frequency is located at about 2.4GHz, with −10 dB impedance bandwidth from about 2.3 to 2.5GHz. The highband resonant frequency is located at about 5.7GHz, with −10 dB impedance bandwidth from about 4.9 to 6.0 GHz. In addition, the measured results show good radiation characteristics at the two operating bands, proving the dual-band operation of the proposed antenna.