A New Compact Slot Antenna for Dual-band WLAN Applications

The design of a simple two patch slotted antenna with an offset microstrip feed line is presented as a candidate for use in 2.4/5.2 GHz wireless local area network, WLAN, applications. The first patch has been designed as a rectangular shape and the other has been designed as an inverted L shape with a protruding stub. The proposed antenna has been supposed to be printed on an FR4 substrate with a thickness of 0.8 mm and relative permittivity of 4.6. The resulting antenna has been found to have a compact size of 25.75x22 mm 2 . The antenna offers dual -band characteristics with -10 dB return loss bandwidt hs of 2.3996 - 2.6309 GHz and 5.1335 - 5.8065 GHz for the lower and the upper resonating bands respectively. This dual- band resonant behavior makes the proposed antenna covering many communication services such as ISM, RFID, WLAN and WiFi applications. Modeling and performance evaluation of the proposed antenna have been carried out using a method of finite integration technique (FIT) based EM simulator, the CST MICROWAVE STUDIO.