New Approximate Expressions for Evaluating the Fields of a Vertical Magnetic Dipole in a Dissipative Half Space

Authors

  • Hongyun Deng Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High Speed Electronic Systems, Shanghai Jiao Tong University, Shanghai 200240, China
  • Gaobiao Xiao Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High Speed Electronic Systems, Shanghai Jiao Tong University, Shanghai 200240, China
  • Shifeng Huang Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High Speed Electronic Systems, Shanghai Jiao Tong University, Shanghai 200240, China

DOI:

https://doi.org/10.13052/2021.ACES.J.361101

Keywords:

Dissipative medium, lateral wave, spectral method, surface wave, magnetic dipole

Abstract

In this paper, a set of new asymptotic approximate expressions for evaluating the electromagnetic (EM) fields generated by a vertical magnetic dipole placed in a dissipative half space is proposed. The lateral wave that guarantees the continuity of the EM fields at the interface is discussed in detail. Using the spectral method, the integral expressions of the field components are obtained. The dominant part is extracted from the lateral wave for large radial distance so that all field components in this situation can be approximately expressed with explicit expressions, which makes the method efficient. Besides, the proposed method has no restriction condition on the parameter choices of different half spaces, so it can be applied in more general situations. Some calculation results and comparisons are given to validate the effectiveness of this extraction method.

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Author Biographies

Hongyun Deng, Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High Speed Electronic Systems, Shanghai Jiao Tong University, Shanghai 200240, China

Hongyun Deng received the B.S. degree from Shanghai Jiao Tong University, Shanghai, China, in 2020. He is currently working toward the M.S. degree in electronic engineering with Shanghai Jiao Tong University. His research interests include computational electromagnetics and electromagnetic theory.

Gaobiao Xiao, Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High Speed Electronic Systems, Shanghai Jiao Tong University, Shanghai 200240, China

Gaobiao Xiao received the B.S. degree from Huazhong University of Science and Technology, Wuhan, China, in 1988, the M.S. degree from the National University of Defense Technology, Changsha, China, in 1991, and the Ph.D. degree from Chiba University, Chiba, Japan, in 2002. He has been a faculty member since 2004 with the Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, China. His research interests are computational electromagnetics, coupled thermo-electromagnetic analysis, microwave filter designs, fiber-optic filter designs, phased array antennas, and inverse scattering problems.

Shifeng Huang, Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High Speed Electronic Systems, Shanghai Jiao Tong University, Shanghai 200240, China

Shifeng Huang received the B.S. and M.S. degrees from Wuhan University, Wuhan, China, in 2014 and 2017, respectively. He is currently working toward the Ph.D. degree in electronic engineering with Shanghai Jiao Tong University, Shanghai, China. His current research interests include computational electromagnetics and its application in electromagnetic compatibility and scattering problems.

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Published

2021-12-30

How to Cite

[1]
H. . Deng, G. . Xiao, and S. . Huang, “New Approximate Expressions for Evaluating the Fields of a Vertical Magnetic Dipole in a Dissipative Half Space”, ACES Journal, vol. 36, no. 11, pp. 1393–1400, Dec. 2021.

Issue

2021: Vol 36 Iss 11

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