Design of a Multi-Band Antenna for WLAN Application

Abstract

In this paper, a miniaturized tri-band antenna is proposed and it is composed of a rectangular ring, a trapezoidal ring and a trapezoidal branch. The antenna is simulated by high-frequency structure simulator (HFSS)software. Through simulation, it can be known that adjusting the trapezoidal ring and the trapezoidal branch can adjust the second and the third resonant frequencies. According to the ultimate size obtained by the simulation, an actual multi-band antenna is made and measured. The simulated result of the multi-band antenna is basically consistent with the measured result. The design of the tri-band antenna is verified and the antenna is suitable for wireless local area network (WLAN)application.