Investigations into Helix Slow-Wave Structure Assisted by Double-Negative Metamaterial
| Autor: | Amit Kumar Varshney, Raktim Guha, A.K. Bandyopadhyay, B N Basu, Subrata Kumar Datta |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Permittivity Materials science Condensed matter physics Amplifier Lorentz transformation Metamaterial Double negative metamaterial 01 natural sciences Rod 010305 fluids & plasmas Electronic Optical and Magnetic Materials symbols.namesake 0103 physical sciences Miniaturization symbols Electrical and Electronic Engineering Electrical impedance |
| Zdroj: | IEEE Transactions on Electron Devices. 65:5082-5088 |
| ISSN: | 1557-9646 0018-9383 |
| DOI: | 10.1109/ted.2018.2869831 |
| Popis: | A helical slow-wave structure consisting of a metallic helix supported by double-negative metamaterial (DNG-MTM) rods, symmetrically arranged around the helix, in a metal envelope was analyzed, considering the frequency-dependent permeability and the permittivity of the DNG-MTM following Lorentz and Drude models. The analysis was validated against the 3-D electromagnetic simulation using CST Studio and was extended for studying the effects of the DNG-MTM parameters on the dispersion and interaction impedance of the structure. Tunability of the structure over multiple-frequency bands was also demonstrated. The possible means of metal MTM layering of the radial faces of the discrete support rods were suggested in a more realistic structure configuration. The structure exhibited a high value of interaction impedance as compared to its traditional counterpart, promising enhanced device efficiency and miniaturization. The structure has potential applications in backward-wave amplifiers and backward-wave oscillators. |
| Databáze: | OpenAIRE |
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