Study of the electromagnetic field generated by a magnetic pendulum

Autor: Buyun Wang, Penghao Feng, Guy A.E. Vandenbosch, Zicai Zhu, Sen Yan
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Results in Physics, Vol 64, Iss , Pp 107914- (2024)
Druh dokumentu: article
ISSN: 2211-3797
DOI: 10.1016/j.rinp.2024.107914
Popis: In this paper the electromagnetic (EM) field expressions for a magnetic pendulum are derived. The mechanical frequency and the magnetic dipole moment are found by applying mechanical-kinetic theory. A study of the expressions reveals that the electromagnetic field contains both the fundamental and higher order harmonic waves, which is quite different from a magnet with simple harmonic motion, and their amplitude ratios are governed by Bessel Functions of the first kind. 1 Hz radiator system is used for the experimental verification. The radiation pattern, the efficiency and the Q factor of the pendulum are discussed in detail. This paper provide the theoretical basis with the experimental verification of the pendulum antenna.
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