Novel numerical analysis of electric fields in the near field of very-low-frequency antennas based on the charge simulation method

IF 1.1 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Microwaves Antennas & Propagation Pub Date : 2024-06-24 DOI:10.1049/mia2.12488

Bo-Yu Ren, Xian-Qiang Li, Yuan-Cheng Qin, Hao Du, Liang-Chang Fei, Rui Huang

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Abstract

Very-low-frequency (VLF) transmitting antennas have a crucial influence on the nearby electromagnetic environment. Commercial software packages, such as CST Studio Suite (CST) or Altair FEKO (FEKO), are always utilised to calculate the electric fields of VLF antennas, which consume considerable computing resources and time. The classical method of electric field calculation, the charge simulation method (CSM), is first applied to the calculation of electric field near the VLF transmitting antenna. The distribution characteristics of three-dimensional electric fields were analysed. The electric field surrounding the antenna exhibited axial symmetry. The highest electric field strength was at the top of the antenna, and as the distance from the antenna increased, the electric field strength exponentially decreased. The comparisons are performed between the results of the CSM and those of commercial software, the average relative errors of CSM on two observation paths are very small, 2.20% and 2.21%, respectively. Meanwhile, the CSM shows considerable advantages in saving calculation resources and improving efficiency. Additionally, the comparison between CSM calculation and the measured data is carried out. The results show that this method can accurately calculate the electric field near VLF transmitting antenna and offer valuable insights and a new solution.

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基于电荷模拟法的极低频天线近场电场数值分析新方法

甚低频（VLF）发射天线对附近的电磁环境有着至关重要的影响。商用软件包，如 CST Studio Suite (CST) 或 Altair FEKO (FEKO) 通常用于计算甚低频天线的电场，这需要消耗大量的计算资源和时间。电场计算的经典方法是电荷模拟法（CSM），首先应用于计算甚低频发射天线附近的电场。分析了三维电场的分布特征。天线周围的电场呈轴对称分布。天线顶部的电场强度最高，随着与天线距离的增加，电场强度呈指数下降。通过比较 CSM 和商业软件的结果，CSM 在两条观测路径上的平均相对误差非常小，分别为 2.20% 和 2.21%。同时，CSM 在节省计算资源和提高效率方面表现出相当大的优势。此外，还对 CSM 计算结果和测量数据进行了比较。结果表明，该方法可以精确计算 VLF 发射天线附近的电场，并提供了有价值的见解和新的解决方案。

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来源期刊

Iet Microwaves Antennas & Propagation 工程技术-电信学

CiteScore

4.30

自引率

5.90%

发文量

109

审稿时长

7 months

期刊介绍： Topics include, but are not limited to: Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques. Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas. Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms. Radiowave propagation at all frequencies and environments. Current Special Issue. Call for papers: Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf