title: Microwave transmission through a metal capped array of holes in a metal sheet.
abstract: The microwave response of a square array of "metal capped" holes in a metal sheet is explored both experimentally and numerically. Above each circular aperture are concentrically placed metallic discs, separated by a fraction of the wavelength, with discs having radii larger than the apertures. The volume bound by the overlap supports a family of resonances that mediate transmission with the fundamental resonant mode being a factor of ~2.3 lower in frequency than the bare aperture resonance.
authors.affiliation: School of Physics, University of Exeter, Exeter, EX4 4QL, UK. m.p.biginton@ex.ac.uk
authors.forename: Matthew P
authors.initials: MP
authors.lastname: Biginton
authors.forename: Alastair P
authors.initials: AP
authors.lastname: Hibbins
authors.forename: J Roy
authors.initials: JR
authors.lastname: Sambles
authors.forename: Ian J
authors.initials: IJ
authors.lastname: Youngs