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基于分形的宽带漏波天线研究
Alternative TitleDesign and Analysis of a W ide Band Leaky Wave Antenna Based on Fractal
张立芳; 王宏建; 刘洋
Department微波遥感部
Source Publication空间科学学报
2019
Volume39Issue:5Pages:677-683
Language中文
Keyword漏波天线 分形 Minkowski准分形 宽带
Abstract设计了一种新型的具有宽频带特性的微带平面漏波天线.该天线由基片集成波导喇叭、抛物面结构和一组30*10单元的微带贴片阵列组成.分析比较了普通贴片和分形结构贴片天线的带宽和辐射特性,发现具有分形结构单元的天线具有更宽的频带和更好的辐射特性.仿真结果表明,采用Minkowski准分形结构贴片单元的漏波天线在18~22 GHz内回波损耗都大于10 dB,带内增益可达17 dB.实测结果表明,天线在18~22GHz内回波损耗大于10 dB,在20 GHz增益为14 dB,适合于卫星应用.这为将其用作对地观测卫星数传天线提供了新的理论支撑.该新型微带平面漏波天线具有高增益、宽频带、小体积、轻质量和波束扫描等优势,可作为航天器天线的优选.
Other AbstractA planar wide band Leaky Wave Antenna (LWA) is proposed in this paper. The antenna is composed of two substrate integrated waveguide horns, the paraboloid structure and a microstrip patch array with 30*10 units. In order to obtain wide bandwidth and high gain, a Minkowski quasi-fractal is properly designed in each unit cell of the patch array. A comparison between two different designs of conventional patch and fractal patch has been done.The simulated results indicate that the LWA with fractal patches has the impedance characteristics with a frequency bandwidth of 18~22 GHz for input return loss more than 10 dB and a max gain of 17 dB at 20 GHz. The measured results show that the return loss of 18~22 GHz is greater than 10 dB and the peak gain at 20 GHz is 14 dB. The antenna has the advantages of small size, easy integration, high gain, wide band and beam scanning. It can be widely used in data transmission antenna of satellite.
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7226
Collection微波遥感部
Recommended Citation
GB/T 7714
张立芳,王宏建,刘洋. 基于分形的宽带漏波天线研究[J]. 空间科学学报,2019,39(5):677-683.
APA 张立芳,王宏建,&刘洋.(2019).基于分形的宽带漏波天线研究.空间科学学报,39(5),677-683.
MLA 张立芳,et al."基于分形的宽带漏波天线研究".空间科学学报 39.5(2019):677-683.
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