Design and analysis of a tri-band notch UWB monopole antenna

A novel ultra-wideband (UWB) antenna with tri-band-notched characteristics is proposed. Which based on Complementary split ring resonator (CSRR) structure and slots structure. The antenna is based on circle patch monopole antenna. This paper introduce the Monopole ultra-wideband antenna etched CSRR structure and return type slot, and by turning the size of CSRR, it's easily achieved tri-band-notched characteristics. As the significant component of wireless communication system, antenna has especially importance on the whole system, also for the development of UWB systems, the research of UWB antennas has the extremely vital sign order to avoid the interference of service that work in the UWB band such as 6.9 ~ 7.1 GHz (RADIO and TELEVISION) and 11.9 ~ 12.3 GHz (Broadcast satellite communication system). It is necessary to design the UWB antennas with band-notched characteristics. Tri band-notched function in ultra-wideband is achieved by corrosion a CSRR structure on the circle radiating patch and embed slot in the feed line. The simulated and measured results indicate that the presented antenna has good radiation, ultra-wideband characteristics and has nearly omnidirectional radiation on the pass band. Besides, it is mimic in size and manufactured easily, so it can be applied for ultra-wideband communication. The frequency band of UWB is 3.0 ~ 16 GHz, bandwidth is 13 GHz. Between 4.1 ~ 4.9 GHz 6.8 ~ 7.1 GHz and 11.9 ~ 12.3 GHz realize tri-band notched function.