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Electromagnetic Energy Balance Equations and Poynting Theorem

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posted on 25.06.2020 by gaobiao xiao

Poynting theorem plays a very important role in analyzing electromagnetic phenomena. The electromagnetic power flux density is usually expressed with the Poynting vector. However, since Poynting theorem basically focuses on the power balance in a system, it is not so convenient in some situations to use it for evaluating the electromagnetic energies. The energy balance issue for time varying fields is revisited in this paper, and a set of energy balance equations are introduced, and a modified method for evaluating power flux is proposed.

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Email Address of Submitting Author

gaobiaoxiao@sjtu.edu.cn

ORCID of Submitting Author

https://orcid.org/0000-0001-5547-9475

Submitting Author's Institution

Shanghai Jiao Tong University

Submitting Author's Country

China

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