1. Federal Communications Commission: ‘First Report and Order’, Revision of Part 15 of the Commission's Rules Regarding Ultra-Wideband Transmission Systems, Feb. 2002
2. Planar miniature tapered-slot-fed annular slot antennas for ultrawide-band radios
3. A Planar Monopole Antenna Design With Band-Notched Characteristic
4. Powell, J.: ‘Antenna design for ultra wideband radio’, 7, May, 2004, M.Sc., Massachusetts Institute of Technology, Cambridge, MA