一种基于介质加载的地球覆盖波束天线设计  

Design of a Dielectric Loaded Antenna with Earth Coverage Beam

作　　者：任雪 廖绍伟 薛泉 黄衡[5] 何文龙 REN Xue;LIAO Shao-wei;XUE Quan;WONG Hang;HE Wen-long(State Key Laboratory of Radio Frequency Heterogeneous Integration,Shenzhen University,Shenzhen 518060,China;College of Electronics and Information Engineering,Shenzhen University,Shenzhen 518060,China;Institute of Microelectronics,Shenzhen University,Shenzhen 518060,China;Guangdong Provincial Key Laboratory of Millimeter-Wave and Terahertz,School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510641,China;State Key Laboratory of Terahertz and Millimeter Waves,Department of Electrical Engineering,City University of Hongkong,Hong Kong 999077,China)

机构地区：[1]射频异质异构集成全国重点实验室(深圳大学),深圳518060 [2]深圳大学电子与信息工程学院,深圳518060 [3]深圳大学微电子研究院,深圳518060 [4]华南理工大学电子与信息工程学院广东省毫米波与太赫兹重点实验室,广州510641 [5]香港城市大学电机工程系太赫兹与毫米波国家重点实验室,中国香港999077

出　　处：《微波学报》2023年第4期10-13,17,共5页Journal of Microwaves

基　　金：国家自然科学基金(62201358);深圳市科技计划资助(ZDSYS20220527171402005);深圳市高层次人才团队项目(KQTD20200820113046084)。

摘　　要：地球覆盖波束天线为低轨卫星与地面终端之间的数据传输建立了通道,文中研究了一种新型的介质加载地球覆盖波束天线。基于介质加载的方法,文中提出了一种圆极化地球覆盖波束天线设计,该天线由馈电网络、馈源和介质三部分组成,介质包括底部圆柱部分和顶部半球部分,馈源集成于介质内部。设计的地球覆盖波束天线工作在C波段,轴向0°~64°范围内增益在0 dBic以上,40°方向增益为5.2 dBic。天线尺寸紧凑,辐射波束具有较好的空间截止特性,可满足立方星应用。This paper introduces a new dielectric-loaded antenna with earth coverage beam.This type antenna provides the data transmission channel between the low earth orbit satellite and terminals on the earth.A circularly polarized earth coverage beam antenna is developed based on the dielectric-loaded method.The proposed antenna is composed of feeding network,source and loaded dielectric.The dielectric includes bottom cylindrical and top hemisphere parts.Source is embedded inside the dielectric structure.The designed antenna operates at C band.The gain is greater than 0 dBic with the axial angle ranges from 0° to 64°.The measured gain is about 5.2 dBic at the angle position of 40°.The radiation beams feature with good spatial cutoff characteristic.The size of the proposed antenna is compact enough for Cube satellite applications.

关 键 词：介质加载天线 地球覆盖波束 圆极化 

分 类 号：TN927.2[电子电信—通信与信息系统] TN820[电子电信—信息与通信工程]