一种基于近场加载技术的双频天线设计

赵显超; 张洪林; 沈斌松; 赵强; 任文成

doi:10.13756/j.gtxyj.2025.240083

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一种基于近场加载技术的双频天线设计

无线通信技术 | 更新时间：2025-06-18

- 一种基于近场加载技术的双频天线设计
- Design of Dual-band Antenna based on Near-field Loading Technology
- 光通信研究 2025年第3期
- 作者机构：
  
  1.空军装备部驻石家庄地区军事代表室，石家庄　 050081
  2.中国电子科技集团公司第五十四研究所，石家庄　 050081
- 作者简介：
  
  赵显超（1980-），男，河北石家庄人。工程师，硕士，主要研究方向为后方专业勤务。
  张洪林，高级工程师。E-mail：zhlandhsl@163.com
- 基金信息：
- DOI：10.13756/j.gtxyj.2025.240083
  中图分类号： TN82
- 收稿日期：2024-04-22，
  
  修回日期：2024-07-10，
  
  纸质出版日期：2025-06-10
- 稿件说明：
移动端阅览
赵显超，张洪林，沈斌松，等. 一种基于近场加载技术的双频天线设计[J]. 光通信研究，2025(3): 240083.

Zhao X C, Zhang H L, Shen B S, et al. Design of Dual-band Antenna based on Near-field Loading Technology[J]. Study on Optical Communications, 2025(3): 240083.
赵显超，张洪林，沈斌松，等. 一种基于近场加载技术的双频天线设计[J]. 光通信研究，2025(3): 240083. DOI： 10.13756/j.gtxyj.2025.240083.

Zhao X C, Zhang H L, Shen B S, et al. Design of Dual-band Antenna based on Near-field Loading Technology[J]. Study on Optical Communications, 2025(3): 240083. DOI： 10.13756/j.gtxyj.2025.240083.

摘要

【目的】

文章旨在解决数据链通信中对多模式、多频段天线的应用需求，提出了一种基于近场加载技术的双频天线。

【方法】

文章所提天线由空间分布为顶层为阶跃阻抗发夹谐振器（SIHR）、中间层为印制板单极和底层为结构相同尺寸不同的SI-HR组成。通过采用近场加载技术，在印制板单极的近场加载两个SIHR，引入了两个谐振频率，实现了该天线的双频特性。同时，通过调整SIHR与印制板单极的辐射贴片之间的耦合距离，可以调谐谐振频率。在阐明设计原理之后，利用电磁场三维仿真软件CST工作室套装（CST Studio Suite）对天线的关键参数进行了仿真分析。

【结果】

从实测结果可以得出，该天线的工作中心频率为2.5和3.1 GHz，其回波损耗小于-20 dB，天线的最大增益达到2.35 dBi，交叉极化优于-18 dB。

【结论】

通过在印制板单极近场加载一对不同尺寸的SIHR，实现具有良好的双频特性和全向性的小型化天线，为双频平面天线设计提供了一个新颖的设计思路。

Abstract

【Objective】

The objective of this paper is to address the application requirements for multi-mode and multi-band antennas in data link communications

proposing a dual-frequency antenna based on near-field loading technology.

【Methods】

The antenna consists of a spatial distribution: a Stepped Impedance Hairpin Resonator (SIHR) on the top layer

a printed monopole in the middle layer

and SIHRs with different sizes on the bottom layer. By employing near-field loading technology

two SIHR are loaded in the near-field of the printed monopole

introducing two resonant frequencies and thereby achieving the dual-frequency characteristic of the antenna. At the same time

the resonant frequency can be tuned by adjusting the coupling distance between the SIHRs and the radiation patch of the printed monopole. After elucidating the design principle

the key parameters of the antenna are simulated and analyzed using the 3D electromagnetic field simulation software CST.

【Results】

From the measured results

it can be concluded that the antenna operates at center frequencies of 2.5 and 3.1 GHz

with a return loss of less than -20 dB. The maximum gain of the antenna reaches 2.35 dBi

and the cross-polarization is better than -18 dB.

【Conclusion】

By loading a pair of SIHRs of different sizes in the near-field of a printed monopole

a miniaturized antenna with good dual-frequency characteristics and omnidirectional properties is achieved

providing a novel design concept for dual-frequency planar antennas.

关键词

Keywords

references

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