It has been shown that the sub-wavelength resonances of circular MTM cylinders also occur for polygonal MTM cylinders. This is the case for lossless and non-dispersive cylinders as well as lossy and dispersive cylinders. The sub-wavelength resonances are thus not limited to structures of canonical shapes but occurs also for other shapes and they are determined more by the material parameters than the geometrical parameters.
Ieee Aps Int. Symp. /usnc/ursi Nat. Radio Science Meeting, 2008, p. 1-4
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2008 IEEE Antennas and Propagation Society International Symposium, 2008