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Abstract
A printed dual band notched ultra wideband monopole antenna with a single perturbed Hilbert curve slot is presented which exhibits 121% impedance bandwidth. A single modified Hilbert curve slot provides dual band notch characteristics in the range of 3.3–3.7 GHz (WiMAX), 3.7–4.2 GHz (C-Band), and 5.15–5.825 GHz (WLAN) which makes the notch design process simpler than other dual band notched antennas. The gain of the proposed antenna varies from 3 to 4 dBi over its operating frequency range, except at the rejection bands. Suitable radiation characteristics are obtained throughout its operating band. Simulation and measured results of the proposed antenna are in good agreement.
Acknowledgments
One of the authors, D.R. Poddar is grateful to All India Council for Technical Education (AICTE) for awarding him “Emeritus Fellow” and supporting this research via Grant No. 1-51 RID/EF/(04)/2009-10, dated. 06-01-2010. Rowdra Ghatak is grateful to the Department of Science and Technology, Government of India for supporting the simulation using CST Microwave Studio™ procured under Young Scientist Scheme vide Sanction No. SR/FTP/ETA-0033/2010, dated 31.08.2010 and also grateful to Department of Science and Technology, Government of India for supporting measurement using VNA procured under DST-FIST grant to ECE Dept., NIT Durgapur vide Sanction No. SR/FST/ETI-267/2012(c) Dated June 10, 2011.