电小准各向同性扇形磁偶极子天线

郁剑; 吕文俊

doi:10.12263/DZXB.20220276

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电小准各向同性扇形磁偶极子天线

学术论文 | 更新时间：2025-12-08

- 电小准各向同性扇形磁偶极子天线
- Electrically Small Quasi-Isotropic Circular Sector Magnetic Dipole Antenna
- 电子学报 2023年51卷第8期页码：2003-2010
- 作者机构：
  
  南京邮电大学通信与信息工程学院江苏省无线通信重点实验室，江苏南京 210003
- 作者简介：
  
  [ "郁剑男，1988年出生，江苏沭阳人.南京邮电大学博士研究生.主要研究方向为多谐天线理论与设计方法.E-mail: 2018010208@njupt.edu.cn" ]
  [ "吕文俊（通讯作者）男，1978年出生，广东江门人.南京邮电大学教授、博士生导师，物联网研究院副院长，教育部新世纪优秀人才支持计划获得者，中国电子学会天线分会委员.主要研究方向为天线理论与设计、微波技术、无线信道测量与建模. Email: wjlu@njupt.edu.cn" ]
- 基金信息：
  
  国家重点研发计划(2021YFE0205900);国家自然科学基金面上项目(61871233)
- DOI：10.12263/DZXB.20220276
  中图分类号： TN82;
- 收稿：2022-03-18，
  
  修回：2022-06-28，
  
  纸质出版：2023-08-25
- 稿件说明：
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郁剑,吕文俊.电小准各向同性扇形磁偶极子天线[J].电子学报,2023,51(08):2003-2010.

YU Jian,LÜ Wen-jun.Electrically Small Quasi-Isotropic Circular Sector Magnetic Dipole Antenna[J].ACTA ELECTRONICA SINICA,2023,51(08):2003-2010.
郁剑,吕文俊.电小准各向同性扇形磁偶极子天线[J].电子学报,2023,51(08):2003-2010. DOI： 10.12263/DZXB.20220276.

YU Jian,LÜ Wen-jun.Electrically Small Quasi-Isotropic Circular Sector Magnetic Dipole Antenna[J].ACTA ELECTRONICA SINICA,2023,51(08):2003-2010. DOI： 10.12263/DZXB.20220276.

摘要

本文提出了一种电小准各向同性扇形磁偶极子的设计方法.利用微带贴片天线模式综合设计方法，研究由不对称边界条件原型磁偶极子演化成的扇形磁偶极子，发现不对称边界条件情况下可以同时实现电小天线设计和准各向同性辐射特性.通过推导解析设计闭式而确定天线关键参数，设计了圆心角为300°的扇形磁偶极子，分别采用“同轴线+扼流套筒”和“开槽同轴线”两种馈电方式进行激励和测量.结果表明：采用开槽同轴线激励的天线可以获得最均匀的总电场方向图，其最大不圆度低于6.7 dB，辐射效率为91.2%，最终实现的准各向同性扇形磁偶极子的电尺寸为

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Abstract

A design approach to electrically small quasi-isotropic circular sector magnetic dipole antennas is advanced. Based on the mode synthesis theory of microstrip patch antennas

the circular sector magnetic dipole evolved from the prototype dipole with asymmetric boundary conditions is studied. As is validated

electrically small size and quasi-isotropic radiation characteristics can be simultaneously achieved. A set of analytical design closed-form formulas is derived from the eigen-equation and employed to determine the key parameters of the proposed antenna. As a proof of the design approach

the circular sector magnetic dipole antenna with the flared angle of 300° is designed

bricated and measured. The antenna is excited by a sleeve choke coaxial cable and a slotted coaxial cable

respectively. It has been shown that the maximum gain variation of the proposed antenna in the total space is 6.7 dB and the radiation efficiency is 91.2%. The electrical size of the proposed antenna is

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关键词

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references

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