DOUBLE DIPOLE ANTENNA FOR DUAL-BAND WIRELESS LOCAL AREA NETWORKS APPLICATIONS

作者：Steyn Johanna M; Odendaal Johann W; Joubert Johan^*

来源：Microwave and Optical Technology Letters, 2009, 51(9): 2034-2038.

DOI：10.1002/mop.24540

• rhombus
• dipole
• dual-band
• planar antenna
• WLAN

A double-dipole antenna design is proposed for wireless local area network, (WLAN) applications. Two parallel dipoles are used to facilitate operation in both the standard WLAN frequency hands (IEEE 802.11b and IEEE 802.11a) simutaneously. The lower band dipole is rhombus shaped and radiates above a planar ground plane, whereas radiation from the rectangular higher band dipole is directed through the use of a passive director. The antenna is characterised in terms of impedance bandwidth, gain and radiation patterns through simulations and measurements. The design addresses the need for dual-band operation, whereas delivering directional radiation patterns with adequate gain, low cross-polarization, and good front-to-back ratio. The 2.4/5 GHz WLAN bonds are covered with an impedance bandwidth of 17.8 and 26.4%, respectively, for a VSWR better than 2:1.

• 出版日期2009-9