Plasma and Fusion Research

Volume 14, 2406008 (2019)

Regular Articles


Study of Spoof Plasmon Formed on Periodically Corrugated Metal Surface Based on Cavity Resonance Method
Kazuo OGURA, Kei SEKINE, Yuta ANNAKA and Min Thu SAN1)
Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
1)
West Yangon Technological University, Yangon, Myanmar
(Received 26 September 2018 / Accepted 18 November 2018 / Published 29 January 2019)

Abstract

We experimentally studied spoof plasmons developed on a metal cylinder with rectangular corrugations. Cavity resonance method using vector network analyzer is employed to examine electromagnetic properties of the spoof plasmon. The dispersion characteristics are obtained using resonance frequencies and can be recognized as two regions: bounded and hybrid surface-wave regions. The bounded surface wave is formed near the upper cutoff frequency, while the hybrid surface wave similar to a Sommerfeld wave is formed away from the upper cutoff frequency. In addition to the dispersion characteristics, the reflectance of spoof plasmon at the corrugation end is examined, based on quality factors of resonant modes.


Keywords

periodic structure, surface wave, spoof plasmon, cavity resonance method, dispersion characteristic, quality factor, end reflectance

DOI: 10.1585/pfr.14.2406008


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