Dual-band Omnidirectional Antenna for WiFi Applications

In this paper, the design of a dual-band omnidirectional patch antenna with stable ellipticity of less than 1.8dB is introduced. This antenna is designed for the WiFi application operations at 2.4 GHz and 5.0 GHz. It has an advantage of a much smaller and simpler structure compared with traditional dual-band WiFi antennas. Details of design, simulated results of this dual-band omnidirectional antenna are presented and discussed. The results confirm the validity of this design, which meet the requirement of WiFi application.