Design of a planar half‐circle‐shaped UWB notch antenna

Abstract

Abstract In this paper, we propose a small, lightweight, and low‐cost ultra‐wideband (UWB) antenna that exhibits a notch characteristic in the 5‐GHz WLAN band (5.15–5.825 GHz) using a planar half‐circle shape patch, a two‐step matching stub, a coplanar waveguide (CPW)‐type feed, and a hat‐shaped slot. The notch frequency of the proposed antenna can be adjusted by controlling the slot length. The measured results are in reasonably good agreement with the simulated results. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 9–11, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21065