Non-thermal plasma potentialities for microwave device reconfigurability

Sokoloff, J. B.; Pascal, Olivier; Callegari, Thierry; Pascaud, Romain; Pizarro, Francisco; Liard, Laurent; Lo, Juslan; Kallel, Asma

doi:10.1016/j.crhy.2014.02.006

Cited by 13 publications

(6 citation statements)

References 33 publications

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“…Replacing metallic pieces of traditional antennas by plasma columns makes it possible to design efficient reconfigurable systems [39]. Some successful demonstrations include plasma antennas with low radar cross-sections, which are almost undetectable when the plasma is turned off [40], reconfigurable metamaterials [41][42][43], tunable leaky-wave antennas [44,45], and frequency agile resonators [46].…”

Section: Reconfigurable Chaotic Cavitymentioning

confidence: 99%

A Reconfigurable Chaotic Cavity With Fluorescent Lamps for Microwave Computational Imaging

Yoya¹,

Fuchs²,

Leconte³

et al. 2019

PIER

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Several computational imaging systems have recently been proposed at microwave and millimeter-wave frequencies enabling a fast and low cost reconstruction of the scattering strength of a scene. The quality of the reconstructed images is directly linked to the degrees of freedom of the system which are the number of uncorrelated radiated patterns that sequentially sample the scene. Frequency diverse antennas such as leaky chaotic cavities and metamaterial apertures take advantage of the spectral decorrelation of transmitted speckle patterns that stems from the reverberation within a medium. We present a reconfigurable chaotic cavity for which the boundary conditions can be tuned by exciting plasma elements, here commercial fluorescent lamps. The interaction of electromagnetic waves with a cold plasma is strongly modified as it is ionized. Instead of being transparent to incident waves, it behaves theoretically as a metallic material. The independent states of the cavity obtained using a differential approach further enhance the degrees of freedom. This relaxes the need of a cavity with a large bandwidth and/or high quality factor. Experimental results validate the use of fluorescent lamps, and its limitations are discussed. Images of various metallic objects are provided to illustrate the potentialities of this promising solution.

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Section: Reconfigurable Chaotic Cavitymentioning

confidence: 99%

A Reconfigurable Chaotic Cavity With Fluorescent Lamps for Microwave Computational Imaging

Yoya¹,

Fuchs²,

Leconte³

et al. 2019

PIER

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“…In particular, plasma parameters can be controlled by external variables, such as the power injected to the discharge that has a direct influence on the electron density, and the gas pressure, and this has an influence over the plasma collision frequency [26]. This characteristic makes the cold plasma discharge suitable for the implementation of reconfigurable high-frequency devices, due to the active control and variation of the plasma permittivity, and therefore the variation of how the EM wave interacts with the discharge and the device [27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Potential Use of Cold Plasma Discharges for Frequency Reconfigurability in a Sievenpiper Mushroom Metasurface

et al. 2021

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This article presents a parametric study using full-wave simulations about the potential use of cold plasma discharges to achieve frequency reconfiguration on a Sievenpiper mushroom metasurface. The study was done by inserting plasma tubes in between the patches of the mushroom structure, in three different positions with respect to the top of the metasurface, and varying the electronic density while keeping the plasma collision frequency. The obtained results show that it is possible to shift the stop-band generated by the metasurface around 25% towards lower frequencies for an electron density value inside the tubes of 1014 cm−3, when they are placed in between the top patches of the metasurface. Additional insertion losses are exhibited when operating near the plasma frequency.

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“…Plasma discharges are globally neutral mixtures of electrons, ions, and neutrals. They have already shown promising features to design stealth, tunable and steerable antennas [9]- [11]. For a low pressure, non-equilibrium, and non-magnetized plasma, its complex relative permittivity can be calculated using the Drude model:…”

Section: Introductionmentioning

confidence: 99%

Design of a Tunable Subwavelength Plasma-Based Resonator for Electrically Small Antenna

Laffont

Delage

Pascaud

et al. 2020

2020 14th European Conference on Antennas and Propagation (EuCAP)

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A preliminary study of the design of an electrically small plasma-based resonator using a localized surface plasmon resonance (LSPR) above 1 GHz is presented. Such a resonator is intended to be used to develop an electrically small antenna with frequency agility. This resonator consists of a plasma discharge confined in a hemispherical glass shell 3 cm in diameter on a ground plane. From 1 to 1.5 GHz, the plasma electron density required to achieve the LSPR must be between 0.5 × 10 11 and 1.4×10 11 cm −3. Plasma losses are taken into account in this study and provide information on the required gas pressure. Typically for neon gas, the working pressure must be around 50 mTorr. A practical implementation using a miniature inductively coupled plasma (mICP) source is finally discussed.

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Non-thermal plasma potentialities for microwave device reconfigurability

Cited by 13 publications

References 33 publications

A Reconfigurable Chaotic Cavity With Fluorescent Lamps for Microwave Computational Imaging

A Reconfigurable Chaotic Cavity With Fluorescent Lamps for Microwave Computational Imaging

Potential Use of Cold Plasma Discharges for Frequency Reconfigurability in a Sievenpiper Mushroom Metasurface

Design of a Tunable Subwavelength Plasma-Based Resonator for Electrically Small Antenna

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