On the Use of Subwavelength Radial Grooves to Support Spoof Surface-Plasmon-Polariton Waves

This letter introduces radial grooves as a feasible geometry to support spoof surface-plasmon-polariton (SPP) waves propagating along a vacuum-metallic interface. Through the analytical derivation of a dispersion relation, validated also with full-wave simulations, the ability of radial grooves to o...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2016-11, Vol.26 (11), p.861-863
Main Authors: Pantoja, Mario F., Zhi Hao Jiang, Werner, Pingjuan L., Werner, Douglas H.
Format: Article
Language:English
Subjects:
Dispersion
Electromagnetic waveguides
Grooves
Microwave propagation
Plasmons
Polaritons
Surface impedance
Surface waves
Wave propagation
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Summary:This letter introduces radial grooves as a feasible geometry to support spoof surface-plasmon-polariton (SPP) waves propagating along a vacuum-metallic interface. Through the analytical derivation of a dispersion relation, validated also with full-wave simulations, the ability of radial grooves to operate in the fundamental mode at the microwave regime is demonstrated. Also, results demonstrate the utility of radial geometries to decrease the depth of the grooves, in comparison with the widely used rectangular grooves, thereby providing a superior methodology for generating spoof SPPs.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2016.2614970