Coupled Re-Entrant Cavity System for Electromagnetic Levitation

This paper describes a coupled re-entrant cavity system which is designed to provide an electric field distribution capable of generating levitation forces on a conducting plate located in the near-field of two or more non-radiating coupling apertures. Re-entrant cavities are used to maximise the le...

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Bibliographic Details
Published in:Journal of electromagnetic waves and applications 2001-01, Vol.15 (6), p.815-831
Main Authors: Sangster, A.J., McErlean, E., Beale, G., Kelly, M., Smith, P.
Format: Article
Language:English
Subjects:
Applied classical electromagnetism
Electromagnetism
electron and ion optics
Electrostatics. Poisson and laplace equations, boundary-value problems
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
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Summary:This paper describes a coupled re-entrant cavity system which is designed to provide an electric field distribution capable of generating levitation forces on a conducting plate located in the near-field of two or more non-radiating coupling apertures. Re-entrant cavities are used to maximise the levitation field at these apertures which are placed at the re-entrant cavity gap. The system represents a particularly complex electromagnetic boundary value problem and consequently the arrangement has had to be modelled using a finite element simulation package in order to secure a design. Simulation results from the finite element model are compared with the measured results from the final design.
ISSN:0920-5071
1569-3937
DOI:10.1163/156939301X01048