Universiti Teknologi Malaysia Institutional Repository

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 Engineering, 6 (1). pp. 17-20. ISSN 2180-1843

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Official URL: http://journal.utem.edu.my/index.php/jtec/article/...

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(κr -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 ′ =ω 0t -ω 0t' =ω 0r /c ·

Item Type:Article
Uncontrolled Keywords:angular momentum, electric field, magnetic field, rotating dipole
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:51866
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:01 Feb 2016 03:53
Last Modified:31 Oct 2018 12:39

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