Abstract
Broadband planar antennas are useful for mobile communications. The UWB systems are worried about interferes in the 5GHz band, assigned for IEEE802.11a. In this paper, UWB antenna with a parasitic element is proposed in order to make a stop band in the 5GHz band and is analyzed by using the FDTD method. The characteristics are shown in figures. This result will apply to development of broadband planar antenna with stop band for mobile communications.
