心形超宽带陷波天线的设计  

Heart-shaped Band-notched UWB Antenna with U-shaped Slots

作　　者：沈菊鸿[1] 卢春兰[2] 孟凡秋[2] 杨杰[3] 

机构地区：[1]解放军理工大学通信工程学院研究生1队 [2]解放军理工大学通信工程学院 [3]中国人民解放军61123部队

出　　处：《军事通信技术》2014年第1期1-5,共5页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(61201241)

摘　　要：文章设计了一种新颖的心形超宽带陷波天线。该天线采用微带线馈电,为了获得超宽带特性,将天线的辐射贴片设计成渐变的心形形状,同时在地板上切角来获得良好的阻抗匹配。为了去除超宽带频带内的来自无线局域网(WLAN)频段的干扰,在辐射贴片上引入U形槽使其具有陷波功能。仿真结果表明该天线覆盖了3.4GHz^14GHz的频带范围,并实现了在5GHz^6GHz处形成阻带特性,结构简单,适用于超宽带系统的实际应用。A novel heart-shaped UWB antenna with low profile and simple structure was proposed.This antenna comprises of a microstrip feed line,a heart-shaped patch to achieve UWB characteristic,and a modified grounded plane with level to ensure good impedance match and stable gain over a broad frequency range.The band-notched characteristic was obtained by a Ushaped slot on the patch.The simulated results indicate that the proposed antenna yields an impedance bandwidth of 3.4~14GHz with VSWR2,except the notched band of 5~6GHz.It has a promising radiation characteristic and is suitable for UWB applications.

关 键 词：微带天线 超宽带 心形 陷波 

分 类 号：TN82[电子电信—信息与通信工程]