Theoretical proposal for the experimental realisation of a monochromatic electromagnetic knot

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dc.contributor.authorCameron, R. P.
dc.contributor.authorLoffler, W.
dc.contributor.authorStephan, Karl D.
dc.date.accessioned2021-08-24T18:51:27Z
dc.date.available2021-08-24T18:51:27Z
dc.date.issued2021-05
dc.description.abstractWe propose an antenna designed to generate monochromatic electromagnetic knots and other 'unusual electromagnetic disturbances' in the microwave domain. Our antenna is a spherical array of radiating dipolar elements configured to approximate the desired electromagnetic field near its centre. We show numerically that a specific embodiment of the antenna with a radius of 61.2 cm and only 20 element pairs driven at a frequency of 2.45 GHz can yield linked and torus-knotted electric and magnetic field lines approximating those of an 'electromagnetic tangle': a monochromatic electromagnetic knot closely related to the well-known Rañada–Hopf type electromagnetic knots but simpler in its construction. The antenna could be used to locally excite plasmas.
dc.description.departmentEngineering
dc.formatText
dc.format.extent7 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationCameron, R. P., Löffler, W., & Stephan, K. D. (2021). Theoretical proposal for the experimental realisation of a monochromatic electromagnetic knot. Journal of Optics, 23, 06.
dc.identifier.doihttps://doi.org/10.1088/2040-8986/abfc33
dc.identifier.issn2040-8986
dc.identifier.urihttps://hdl.handle.net/10877/14443
dc.language.isoen
dc.publisherIOP Science
dc.rights.holder© 2021 The Author(s).
dc.rights.licenseThis work is licensed under a Creative Commons Attribution 4.0 International License.
dc.sourceJournal of Optics, May 2021, Vol. 23, No. 6, Article 064006.
dc.subjectelectromagnetic knots
dc.subjectmicrowaves
dc.subjectantenna theory
dc.subjectIngram School of Engineering
dc.titleTheoretical proposal for the experimental realisation of a monochromatic electromagnetic knot
dc.typeArticle

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