1. FCC 1st report and order on ultra-wideband technology, February 2002.
2. Bottom fed planar elliptical UWB antennas, in Proc. IEEE Ultra Wideband Syst. Technol. Conf., Reston, VA, November 2003, pp. 219–223.
3. Impedance characteristics of trapezoidal planar monopole antennas
4. The pentagonal planar monopole for digital mobile terminals; bandwidth considerations and modeling, in Proc. 11th Int. Antennas Propag. Conf., Boston, MA, April 2001, pp. 170–173.
5. and , Design of a planar monopole antenna for use with ultra-wideband (UWB) having a band-notched characteristic, in Proc. IEEE Antennas and Propag. Soc. Int. Symp., Columbus, OH, June 2003, pp. 830–833.