Angular Momentum of a Rotating Dipole

Ahmad, Mohd Riduan and Mohd Esa, Mona Riza (2014) Angular Momentum of a Rotating Dipole. Journal of Telecommunication Electronic and Computer, 6. pp. 17-20. ISSN 2180-1843

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Abstract

In this paper, we derive the far field electromagnetic fields of a rotating half-wave dipole antenna. Theoretically, we have demonstrated that the far electromagnetic fields of a rotating half-wave dipole carry angular momentum in the term of φ - φ′, which is absent from the stationary half-wave dipole antenna. The term sin(kr−ωt+[φ−φ']) tells us that the electromagnetic wave propagates outward with the speed of light c (evidence from k = ω/c) from the dipole along the r axis and both electric and magnetic fields are spinning (oscillate with ω rad/s) and orbiting (rotating with ω0 rad/s) along the r axis with the speed of light. The orbital frequency is evidence from the term φ−φ'=ω0t−ω0t'=ω0r/c

Item Type:	Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Electronics and Computer Engineering > Department of Computer Engineering
Depositing User:	En. Mohd Riduan Ahmad
Date Deposited:	17 Sep 2014 12:00
Last Modified:	28 May 2015 04:28
URI:	http://eprints.utem.edu.my/id/eprint/12903
Statistic Details:	View Download Statistic

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