Design of a Modified L Slot CPW Feed Multiband Antenna for Wireless Application

Abstract: In this paper a new multiband compact CPW feed complementary antenna has been proposed which is suitable for wireless communication. This multiband characteristic is achieved with the help of one L-shaped slot on the radiating patch. By controlling the position and length of the slot multiband position can be varied. The size of the antenna is 27.4�23.6 mm2 and it is printed on FR4 EPOXY substrate with height of 1.6 mm, dielectric constant 4.4. Simulation result shows the proposed antenna exhibits a good impedance matching over a wide frequency range of 2.41to2.46GHz and 4.79 GHz to 6.67 GHz with a gain of 1.5dBi and 2.6dBi respectively. This proposed antenna produces good performance, and small size.

Keywords: WLAN, CPW Feed, Microstrip Antenna.