Research on Pulse Radiation Characteristics of Leaf-like Ultra Wide Band Antenna  

作　　者：张春青 王均宏 陈美娥 

机构地区：[1]Key Lab of All Optical Network & Advanced Telecommunication Network of EMC,Beijing Jiaotong University

出　　处：《Defence Technology（防务技术）》2007年第2期102-105,共4页Defence Technology

基　　金：Sponsored by National Nature Science Foundation of China(60471053);the Program for New Century Excellent Talents in University of MOE,China

摘　　要：A new kind of ultra wideband antenna,which consists of a leaf-like dipole and a dielectric block,is proposed and analyzed.The dielectric block is attached in parallel with the dipole near its feed point.Thus,the near field is attracted to the side where the dielectric block is located.It leads to a focusing effect of the energy in the far zone.The finite-difference time-domain(FDTD)method combined with the perfectly matched layers(PML)technique is used in the simulation of the antenna radiation characteristics.The research shows that,with proper dielectric loading and 50 Ω feeding line,the bandwidth of the antenna can be up to 6.5 GHz,from 3.5 GHz to 10 GHz with VSWR(voltage standing wave ratio)less than 2.5.A new kind of ultra wideband antenna, which consists of a leaf-like dipole and a dielectric block, is proposed and analyzed. The dielectric block is attached in parallel with the dipole near its feed point. Thus, the near field is attracted to the side where the dielectric block is located. It leads to a focusing effect of the energy in the far zone. The finitedifference time-domain （FDTD） method combined with the perfectly matched layers （PML） technique is used in the simulation of the antenna radiation characteristics. The research shows that, with proper dielectric loading and 50 Ωfeeding line, the bandwidth of the antenna can be up to 6.5 GHz, from 3.5 GHz to 10 GHz with VSWR （voltage standing wave ratio） less than 2.5.

关 键 词：电子工艺 超频率 偶极子天线 电介质 

分 类 号：TN822.8[电子电信—信息与通信工程]