具有双陷波特性的六边形分形超宽带缝隙天线  

Hexagonal Fractal Ultra-Wideband Slot Antenna with Double Band-Notched Characteristics

作　　者：南敬昌[1] 李文佳 高明明[1,2] NAN Jing-chang;LI Wen-jia;GAO Ming-ming(School of Electronics and Information Engineering,Liaoning Technical University,Huludao 125105,China;Dalian Maritime University,Dalian 116086,China)

机构地区：[1]辽宁工程技术大学电子与信息工程学院,葫芦岛125105 [2]大连海事大学,大连116086

出　　处：《微波学报》2021年第2期42-48,共7页Journal of Microwaves

基　　金：国家自然科学基金(61971210);国家自然科学基金青年科学基金(61701211);辽宁省特聘教授项目(551710007004)。

摘　　要：提出一款具有双陷波特性的六边形分形超宽带缝隙天线,天线总尺寸为32 mm×16 mm×1.6 mm,采用六边形和三角形迭代嵌套的3阶分形结构作为辐射贴片,并采用缺陷地结构作为接地板,实现了3.0~15.26 GHz的超宽带带宽。在馈线两侧引入对称L形开路枝节,并在接地板上刻蚀U形窄缝隙产生了4.71~5.87 GHz和7.06~7.81 GHz两个频段的陷波特性,有效抑制WLAN(5.150~5.825 GHz)和下行卫星系统频段(DSS:7.25~7.75 GHz)的干扰。在通带频段内的增益范围为2~7.5 dBi。仿真和实测结果基本吻合,表明该天线可用于超宽带通信系统。A hexagonal fractal ultra-wideband slot antenna with double band-notched characteristics is proposed. The overall size of the antenna is 32 mm×16 mm×1.6 mm. A hexagonal and triangular iteratively nested 3 rd order fractal structure is used as the radiation patch, and a defective ground structure is used as the ground plate to achieve an ultra-wide band of 3.0-15.26 GHz. By introducing symmetrical L-shaped open branches on both sides of the feeder and etching the U-shaped narrow gap on the ground plate, the notch characteristics of the two frequency bands of 4.71-5.87 GHz and 7.06-7.81 GHz are generated, effectively suppressing WLAN(5.150-5.825 GHz) and the downlink satellite system frequency band(DSS: 7.25-7.75 GHz). The gain range in the passband band is 2-7.5 dBi. The simulation and actual measurement results basically agree, indicating that the antenna can be used in ultra-wideband systems.

关 键 词：超宽带天线 双陷波 分形结构 缝隙结构 L形枝节 

分 类 号：TN823.24[电子电信—信息与通信工程]