Abstract
ABSTRACTA compact coplanar wave guide ‐fed elliptically tapered ultrawideband (UWB) antenna with a tunable narrow rejection band of 0.195 GHz with tunable range (5.07–5.83) GHz is presented. The proposed antenna consists of elliptically tapered patch, elliptically tapered and truncated ground plane to achieve the UWB bandwidth. A quarter wavelength stubs loaded with a varactor diode has been used to tune the notched band. The proposed antenna has been fabricated on low cost FR4 substrate with dimensions as (24 × 30 × 1.524) mm3. Both the frequency domain as well the time domain performance characterization have been carried out and discussed. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:924–928, 2015
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