Coupled re-entrant cavity system for electromagnetic levitation

A. J. Sangster, E. McErlean, G. Beale, M. Kelly, P. Smith

Research output: Contribution to journalLiterature review

4 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)815-831
Number of pages17
JournalJournal of Electromagnetic Waves and Applications
Issue number6
Publication statusPublished - 2001

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    Sangster, A. J., McErlean, E., Beale, G., Kelly, M., & Smith, P. (2001). Coupled re-entrant cavity system for electromagnetic levitation. Journal of Electromagnetic Waves and Applications, 15(6), 815-831.