The developments of ultra-wideband(UWB) radio communication technology have received growing attention and interest in recent years.The design of ultra-wideband antenna is a challenging task.

• 摘要近年来，超宽带(UWB)无线通信技术的发展日益引起人们的关注和兴趣，超宽带天线设计是一个具有挑战性的课题。