A novel compact Tri-band antenna for WLAN application

In this research article, a novel compact tri-band antenna for WLAN communication system is presented. The structure of the antenna consists of two L shaped patches. Under the condition of ensuring antenna size, by modifying the length of the upper trapezoidal top and bottom edge and the groove in the center of the trapezoid depth width and the groove of the relative position to obtain three center frequency, form three Working frequency bands. The simulation results show that these working frequency bands of the -10 dB antenna were 2.4 GHz, 5.2 GHz and 5.8GHz. From the perspective of electromagnetic compatibility, the antenna has excellent out-band characteristics with other quoted reference antennas. The proposed antenna is steeper than other antennas at 5 GHz frequency. Thus the proposed antenna is the excellent.