清晨好,您是今天最早来到科研通的研友!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您科研之路漫漫前行!

Research on electromagnetic field characteristics of rotating-magnet based mechanical antenna through the earth

磁铁 物理 电磁场 叠加原理 偶极磁铁 偶极子 声学 磁偶极子 计算物理学 超导磁体 量子力学
作者
Lipeng Wu,Wenwei Zhang,Xianjin Song,Guoqiang Liu,Jing Liu,Hui Xia,Liguo Fan
出处
期刊:International Journal of Applied Electromagnetics and Mechanics [IOS Press]
卷期号:74 (2): 123-139
标识
DOI:10.3233/jae-230080
摘要

Conventional low-frequency electromagnetic wave (LFEM) transmitting antennas are enormous in size, which limits the application of LFEM in underground space. Rotating-magnet Based Mechanical Antennas can realize the miniaturization of low-frequency antennas, which is expected to bring new possibilities for underground electromagnetic detection or ground penetration communication. Firstly, this paper establishes a synthetic field method for solving the electromagnetic field of a rotating permanent magnet in the air-earth cross-domain case. The method equates the magnet as an orthogonal superposition of vertical and horizontal dipole sources, and the phase difference between vertical and horizontal dipole sources is 𝜋/2. Based on the half-space theory of multilayer planar media, the quasi-analytical solution of the electromagnetic field of the magnetic dipole in the case of air-earth trans dimensionality can be found by superposition. Secondly, based on the finite element numerical model, the trans-earth propagation characteristics of the electromagnetic field excited by the rotating permanent magnet across the air-earth dual domain are studied. At the same time, the radiation characteristics in the rotating plane of the permanent magnet are also studied. Again, this paper systematically investigates the influence of parameters such as earth conductivity, emission frequency, and propagation distance on the electromagnetic field propagation. Finally, the principle prototype is developed and experiments are carried out. The results show that the finite element numerical model established in this paper is correct, the experimental results are consistent with the theoretical values, and a field strength signal of 0.9 nT can be received at 20 m. The research work in this paper lays the foundation for the future use of mechanical antennas for electromagnetic detection and ground penetration communication.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
朵朵完成签到,获得积分10
7秒前
ggg完成签到 ,获得积分10
12秒前
myth完成签到,获得积分10
26秒前
LuciusHe完成签到,获得积分10
33秒前
Tong完成签到,获得积分0
57秒前
乐观的星月完成签到 ,获得积分10
1分钟前
落落完成签到 ,获得积分0
1分钟前
momoni完成签到 ,获得积分10
1分钟前
1分钟前
rpe发布了新的文献求助10
1分钟前
Lyanph完成签到 ,获得积分10
1分钟前
1分钟前
领导范儿应助科研通管家采纳,获得10
1分钟前
CC发布了新的文献求助10
1分钟前
Dreamhappy完成签到,获得积分10
2分钟前
chichenglin完成签到 ,获得积分0
2分钟前
2分钟前
gszy1975发布了新的文献求助10
2分钟前
凤里完成签到 ,获得积分10
2分钟前
fogsea完成签到,获得积分0
3分钟前
yao完成签到 ,获得积分10
3分钟前
韩寒完成签到 ,获得积分10
3分钟前
王佳豪完成签到,获得积分10
3分钟前
路路完成签到 ,获得积分10
3分钟前
3分钟前
曹国庆完成签到 ,获得积分10
4分钟前
StonesKing完成签到,获得积分20
4分钟前
tmobiusx完成签到,获得积分10
4分钟前
xun完成签到,获得积分10
4分钟前
zzgpku完成签到,获得积分0
4分钟前
4分钟前
搜集达人应助ceeray23采纳,获得20
4分钟前
CC发布了新的文献求助10
5分钟前
愤怒的小鸟完成签到,获得积分10
5分钟前
清脆钧完成签到,获得积分20
5分钟前
风清扬完成签到,获得积分0
5分钟前
勤劳的颤完成签到 ,获得积分10
5分钟前
5分钟前
ceeray23发布了新的文献求助20
5分钟前
亭2007完成签到 ,获得积分10
5分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3990629
求助须知:如何正确求助?哪些是违规求助? 3532220
关于积分的说明 11256552
捐赠科研通 3271057
什么是DOI,文献DOI怎么找? 1805229
邀请新用户注册赠送积分活动 882302
科研通“疑难数据库(出版商)”最低求助积分说明 809234