Slow waves caused by cuts perpendicular to a single subwavelength slit in metal
Suckling, James R.
Sambles, J. Roy
University of Exeter
New Journal of Physics
Institute of Physics and Deutsche Physikalische Gesellschaft
Resonant transmission of microwaves through a subwavelength slit in a thick metal plate, into which subwavelength cuts have been made, is explored. Two orientations of the cuts, parallel and perpendicular to the long axis of the slit, are examined. The results show that the slits act as though filled with a medium with anisotropic effective relative permeability which at low mode numbers has the two values ~(1, 9.1), increasing to ~(1, 14.4) for higher mode numbers.
Copyright © 2007 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. This is the published version of an article published in New Journal of Physics Vol. 9, article 1. DOI: 10.1088/1367-2630/9/1/001
9, article 1