References
[1]. FCC,”Report of the spectrum efficiency working group”, Policy Taskforce, Technology. Rep ,Nov2000.
[2]. J. Mitola, “Cognitive radio: an integrated agent architecture for software designed radio”, PhD dissertation Royal Institute of Technology (KTH), Stockholm. Sweden. 2000.
[3]. K.R. Boyle, et al.”Reconfigurable antenna for SDR and cognitive radio”, The second European conference on Antenna and Propagation, pp.1-6,Nov 2007.
[4]. E. Ebrahim and P.S. Hall, ”A dual port wide narrow band antenna for cognitive radio” The third European Mar. 2009.
[5]. Y. Tawk, and C.G. Christodoulou, "A New reconfigurable antenna design for cognitive radio", IEEE , May, 2009.
[6]. T. Wu, E.L. Li, S.Y. Eom, K. lim, S,I. Jeon, J. Laskar, and M.M.Tentzeris "A multiband/ scalable reconfigurable antenna for cognitive radio base stations",. IEEE,Trans,2008.
[7]. Y. Zhang, W. Hong, C. Yu J.-Y. Zhou Z.-Q. KuaiW. TuttleBee, "Design and implementation of planar, ultra-wideband antennas with multiple notched bands based on stepped impedance resonators, IET Microw. Antennas Propag., 2009, Vol. 3, Iss. 7, pp. 1051–1059.
[8]. P.H. Rao, V.F.Fusco and R. Cahill, “ Wideband Linear and Circularly Polarized Patch Antenna using a Printed Stepped T-Feed,” IEEE Trans. Antennas Propag. Vol. AP- 50, pp. 356-361, March 2002.
[8]. A. Amsaveni, Antennas and Wave Propagation, Anuradha Publications, Chennai 2010.
[9]. C.A Balanis, Antenna Theory, Analysis and design, 3rd edition, John Wiley and sons. New York,2005A.
[10]. Gunavathi, N., Pandeeswari,. R., Raghavan, S “A CPW Fed Octagon Shaped Aperture Antenna For lower Band UWB applications”Indiaconference (INDICON)., Dec2009, Annual IEEE conference.