Bandwidth enhancement of a printed dipole antenna for wideband applications

The design of a novel printed dipole antenna with bandwidth enhancement is proposed for wideband applications. The antenna consists of an integrated balun, two rectangular radiating arms and a modified inductive coplanar stripline (CPS) impedance tuner. By adjusting the parameters of the CPS-tuner and the balun properly, a good performance of bandwidth enhancement is achieved. The measured results indicate that the impedance bandwidth of the proposed antenna, defined by 10-dB return loss, is about 73.9% from 2.54 to 5.52GHz. In addition, good omnidirectional radiation characteristics are also obtained over the whole operating band. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1585–1590, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26883