1. , Antenna, U.S. Patent no. 2,430,353, 1947.
2. Federal Communications Commission, First report and order, revision of part 15 of the commission's rules regarding ultra-wideband transmission systems, ET Docket 98-153, 2002.
3. A wideband and dual-frequency shorted-patch antenna with compact size
4. , Planar elliptical element ultra-wideband dipole antennas, Proc 2002 IEEE APS/URS Conf, San Antonio, TX, 2002, pp. 16-21.