Journal Title: International Journal of Modern Trends in Engineering and Science
Author’s Name : A.Douceut, S.Skolnik
Volume 01 Issue o2 February 2014
ISSN no: 2348-3121
Page No: 6-8
Abstract—This paper presents an antenna scheme suitable for cognitive radio applications. The omni directional c-shaped monopole disc antenna is designed to achieve impedance matching for ultra wide band range The proposed antenna uses FR-4 substrate having thickness of 1.6mm and dielectric constant 4.4 The antenna achieves an enhanced impedance bandwidth of 121.36 % covering from 4.666 to 12 GHz with a stable radiation performance and omnidirectional radiation pattern. The radiated patch occupied a total volume of 50 x 60 x 1.6 mm. The antenna suitable for cognitive radio applications was designed and analyzed by means of an e.m. design tool cad-feko.)
Keywords—Ultra Wideband, circular monopole disc
 “Report of the Spectrum Efficiency Working Group,” FCC Spectrum Policy Task Force, FCC, Tech. Rep.,(2002).
 J. Mitola, Ph.D. dissertation, “Cognitive radio: An integrated agent architecture for software defined radio,” Royal Institute of Technology(KTH), Stockholm, Sweden,(2000).
 Gardner, P., Hamid, M.R., Hall, P.S., Kelly, J., Ghanem, F.,and Ebrahimi, “Reconfigurable antennas for cognitive radio: requirements and potential design”, E. IET seminar on wideband, multiband, antennas and arrays for civil or defence applications, March 2008, London, UK
 Malik, Q.M., and Edwards, “Cognitive techniques for ultra wideband communications”, D.J. IET seminar on ultra wideband systems, technologies and applications, London,UK, April (2006)
 Cabric, D., Mishra, S.M., Willkomm, D., Brodersen, R., and Wolisz, “A Cognitive radio approach for usage of virtual unlicensed spectrum”, A,14th IST Mobile Wireless Communications Summit, Dresden, Germany, June(2005).
 Aberle, J., et al Proc, “Automatically tuning antenna for software defined and cognitive radio”, Software Defined Radio Technical Conf., Orange County, CA, USA, November (2005).
 F. Ghanem, P.S. Hall and J.R. Kelly, “Two port frequency reconfigurable antenna for cognitive radios”,ELECTRONICS LETTERS 21st May (2009) Vol. 45 No. 11M.
 Y. Tawk, and C. G. Christodoulou, “A new reconfigurable antenna design for cognitive radio”, IEEE Antennas an wireless PropagationLetters, Vol. 8, pp. 1378-1381,(2009).
 S. Haykin Selected Areas in Communications, “Cognitive radio brain empowered wireless communications”, IEEE Journal on, Vol. 23, No. 2 (2005), pp. 201-220.
 M. Dillinger, N. Alonistioti, and K. Madani, Software Defined Radio:Architectures, Systems and Functions, Wiley, (2003).