Reflectionless sharp bends and corners in waveguides using epsilon-near-zero effects
J. Appl. Phys. 105, 044905 (2009); doi:10.1063/1.3074506
Published 18 February 2009
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Following our recent theoretical and experimental results that show how zero-permittivity metamaterials may provide anomalous tunneling and energy squeezing through ultranarrow waveguide channels, here we report an experimental investigation of the bending features relative to this counterintuitive resonant effect. We generate the required effectively zero permittivity using a waveguide operating at the cutoff of its dominant mode, and we show how sharp and narrow bends may be inserted within the propagation channel without causing any sensible reflection or loss and without affecting its tunneling properties.
©2009 American Institute of Physics
| History: | Received 25 July 2008; accepted 19 December 2008; published 18 February 2009 |
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http://link.aip.org/link/?JAPIAU/105/044905/1 |
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