Dual wideband and low cross-polarization printed dipole antenna with h-slot for WLAN applications

A novel dual wideband and low cross-polarization printed dipole antenna for wireless local area network applications is proposed in this article.Two H-slots are etched symmetrically on the radiating arms which produce the dual band characteristic. By using the tapered U-shaped structures, good wide band impendence matching can be achieved without additional matching circuit, and then dual wideband can be obtained conveniently. Based on this concept, a prototype of this antenna has been designed, fabricated, and measured. The experimental results show that the proposed antenna yields two operating bands of 2.17–2.95 GHz and 5.05–6.46 GHz with −10 dB return loss, which can cover all the wireless local area network operating bands. Moreover, the radiation patterns are almost omnidirectional in the H-plane and low cross-polarization levels are observed in both the E- and H-plane. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2846–2848, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27173