1. Wide-band planar monopole antennas
2. and Spiral slot patch antenna and circular disc monopole antenna for 3.1-10.6-GHz ultra-wideband communication, Proc 2004 ISAP, Sendai, Japan, 2004, pp. 85-88.
3. First report and order in the matter of revision of part 15 of the commission's rules regarding ultra-wideband transmission systems, Federal Communications Commissions, ET-Docket 98-153, 2002.
4. Planar antennas for wireless communications, Wiley, New York, 2003.
5. and A parametric study of band-notched UWB planar monopole antenna, IEEE Antennas Propagat Soc Int Symp, Monterey, CA, 2004 pp. 830-833.