Compact dual-band-printed dipole antenna with parallel-winding lines and tapered structure for WLAN applications

In this article, a compact printed dipole antenna for wideband local area network (WLAN) (2.45/5.5 GHz) applications is presented.The proposed antenna consists of two radiating patches with several slots etched on the patches, which can generate parallel-winding lines and then produce two bands. By using the unique tapered structure, good impedance matching can be achieved in a wide dual-band without external matching circuit. For the experimental study, the antenna provides 10.2% bandwidth from 2.325 to 2.575 GHz and 64.9% bandwidth from 3.225 to 6.325 GHz (RL ≤ −10 dB). In addition, the antenna has good omnidirectional radiation patterns in H-plane and low cross-polarization levels in both E- and H-planes. The measured results are in good agreement with the simulation ones, and the experiment validates the design concept. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2492–2494, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26342