Abstract
In this article, a printed ring shaped monopole ultra-wideband antenna with band-notched feature is presented and investigated. To get the band-notched characteristic, a quarter wavelength tuning stub is embedded into the ring radiator. The measured results show that the proposed antenna meets the requirement of wide working bandwidth of 3.1–10.6 GHz with VSWR < 2, while avoiding the interference with the wireless local area network band (5.150–5.825 GHz). The transfer function (amplitude of S21/group delay) and time domain characteristic (fidelity/power spectrum density) are also studied in this article. The proposed antenna has a compact size, good radiation characteristics, ultrawide bandwidth, and good time-domain behaviors to satisfy the requirement of the current wireless communications systems. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2387–2392, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27067
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