1. "Report of the spectrum e±ciency working group," Tech. Rep. , FCC Spectrum Policy Task Force, 2002.
doi:10.1109/LAWP.2009.2039743
2. Deng, C., Y. J. Xie, and P. Li, "CPW-fed planar printed monopole antenna with impedance bandwidth enhanced," IEEE Antennas and Wireless Propagation Letters, Vol. 8, 1394-1397, 2009.
doi:10.1109/TAP.2005.858598
3. Liang, J., C. C. Chiau, X. Chen, and C. G. Parini, "Study of printed circular disc monopole antennas for UWB systems," IEEE Transactions on Antennas and Propagation, Vol. 53, No. 11, 3500-3504, Nov. 2005.
doi:10.1109/LAWP.2006.878882
4. Angelopoulos, E. S., A. Z. Anastopoulos, D. I. Kaklamani, A. A. Alexandridis, F. Lazarakis, and K. Dangakis, "Circular and elliptical CPW-fed slot and microstrip-fed antennas for ultra wideband applications," IEEE Antennas and Wireless Propagation Letters, Vol. 5, 294-297, 2006.
doi:10.1002/mop.27218
5. Wang, C., Z.-H. Yan, B. Li, and S. Li, "An ultra-wideband CPW fed monopole antenna with fan shaped structure," Microwave and Optical Technology Letters, Vol. 54, No. 12, 2878-2880, Dec. 2012.