Capacitors can radiate - some consequences of the two-capacitor problem with radiation

Details Capacitors can radiate - some consequences of the two-capacitor problem with radiation Capacitors can radiate - some consequences of the two-capacitor problem with radiation

2003-05-14

arxiv.org/abs/physics/0305062v1

Am. J. Phys. Vol 72 no 5, page 663 (2004)

Physics

Classical Physics

5 Pages with No figures

Scientific paper

We fill a gap in the arguments of Boykin et al [American Journal of Physics, Vol 70 No. 4, pp 415-420 (2002)] by not invoking an electric current loop (i.e. magnetic dipole model) to account for the radiation energy loss, since an obvious corollary of their results is that the capacitors should radiate directly even if the connecting wires are shrunk to zero length. That this is so is shown here by a direct derivation of capacitor radiation using an oscillating electric dipole radiator model for the capacitors as well as the alternative less widely known magnetic 'charge' current loop representation for an electric dipole [see for example "Electromagnetic Waves" by S.A.Schlekunoff, van Nostrand (1948)]. Implications for Electromagnetic Compliance (EMC) issues as well as novel antenna designs further motivate the purpose of this paper.

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