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Article

Modified Finite-Difference Time-Domain Method for Hertzian Dipole Source under Low-Frequency Band

by 1 and 2,*
1
Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Korea
2
College of Information and Communication Engineering, Daegu University, Gyeongsan 38453, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Ewa Korzeniewska and Mariusz Tomczyk
Electronics 2021, 10(22), 2733; https://doi.org/10.3390/electronics10222733
Received: 27 September 2021 / Revised: 4 November 2021 / Accepted: 8 November 2021 / Published: 9 November 2021
In this paper, a modified finite-difference time-domain (FDTD) method is proposed for the rapid analysis of a Hertzian dipole source in the low-frequency band. The FDTD technique is one of the most widely used methods for interpreting high-resolution problems such as those associated with the human body. However, this method has been difficult to use in the low-frequency band as the required number of iterations has increased significantly in such cases. To avoid this problem, FDTD techniques using quasi-static assumptions in low-frequency bands were used. However, this method was applied only to plane wave excitation, making it difficult to apply to near-field problems. Therefore, a modified approach is proposed, involving the application of the FDTD technique with a quasi-static approximation to an electric and magnetic dipole problem. The results when using the proposed method are in good agreement with those from a theoretical solution. An example of comparison with the standard FDTD method is shown for illustrating the proposed method’s performance. View Full-Text
Keywords: finite-difference time-domain method; quasi-static analysis; wireless power transfer; dosimetry finite-difference time-domain method; quasi-static analysis; wireless power transfer; dosimetry
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MDPI and ACS Style

Kim, M.; Park, S. Modified Finite-Difference Time-Domain Method for Hertzian Dipole Source under Low-Frequency Band. Electronics 2021, 10, 2733. https://doi.org/10.3390/electronics10222733

AMA Style

Kim M, Park S. Modified Finite-Difference Time-Domain Method for Hertzian Dipole Source under Low-Frequency Band. Electronics. 2021; 10(22):2733. https://doi.org/10.3390/electronics10222733

Chicago/Turabian Style

Kim, Minhyuk, and SangWook Park. 2021. "Modified Finite-Difference Time-Domain Method for Hertzian Dipole Source under Low-Frequency Band" Electronics 10, no. 22: 2733. https://doi.org/10.3390/electronics10222733

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