A Low Profile Dual-Band High Gain Directional Antenna for Anti-Interference WLAN Station Applications

This paper presents a low-profile dual-band antenna with directional radiation characteristics for wireless local area network (WLAN) applications. The proposed directional antenna is composed of a coupling microstrip line, two F-shaped strips, two rectangular strips, and a defected ground plane. The measured impedance bandwidth of the proposed antenna is 180 MHz (2.33-2.51 GHz) and 830 MHz (5.09-5.92 GHz), which can cover Institute of Electrical and Electronic Engineers (IEEE) 802.11 a/b/g frequency bands. The dual-band antenna exhibits a desirable directional radiation patterns in the vertical and horizontal planes with the peak gain of 6.55 dBi in the lower frequency band and 8.1 dBi in the higher frequency band. The measured antenna efficiency is 70% at 2.4 GHz and 84.5% at 5.5 GHz. The proposed dual-band WLAN station antenna is designed on a FR4 substrate with overall dimensions of 69 mm x 50 mm x 1.6 mm.

Automated summary

This paper introduces a low-profile dual-band antenna for WLAN applications with directional radiation characteristics. The antenna has an impedance bandwidth of 180 MHz (2.33-2.51 GHz) and 830 MHz (5.09-5.92 GHz), covering IEEE 802.11 a/b/g frequency bands. The antenna exhibits desirable directional radiation patterns and peak gains of 6.55 dBi in the lower frequency band and 8.1 dBi in the higher frequency band.