Reflection and Absorption of Electromagnetic Wave Propagation in an Inhomogeneous Dissipative Magnetized Plasma Slab

Jazi, B.; Rahmani, Z.; Shokri, Babak

doi:10.1109/tps.2012.2237525

Cited by 39 publications

(9 citation statements)

References 28 publications

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“…The lossy factor of plasma is affected by the plasma frequency and collision frequency. The propagation of microwave in plasma medium has been widely studied using time-and frequency-domain methods [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Four-Layer Tunable Wideband Electromagnetic Shield Based on Cold Plasma

Liu

2020

IEEE Access

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In this paper, we present a four-layer tunable wideband electromagnetic shield based on cold plasma. It consists of two dielectric matched layers, one backside housing dielectric layer and one vacuum chamber in between where cold plasma can be produced through a glow discharge. No plasma is produced within the vacuum chamber when low-power communication signal impinges on the shield and it can easily propagate through with very low return and absorption loss. When a high-power microwave pulse impinges on the shield, cold plasma can be timely produced within the chamber to reflect and absorb the highintensity microwave energy. Input impedance, standing wave ratio, transmission and reflection coefficients and shielding effectiveness for proposed four-layer structure electromagnetic shield are deduced and formulated. Transparent mode of the electromagnetic shield for communication frequency at 3.5GHz is developed based on transmission line and plane wave theory. Simulation results show that the transmission coefficient is close to unity, and the reflection coefficient is near to zero. The half-power transmission bandwidth is 16% for proposed structure with central communication frequency of 3.5GHz. The impact of plasma frequency and plasma collision frequency on the absorption, reflection, shielding effectiveness for interference frequency between 0-6GHz are investigated. Simulation results show that higher the plasma frequency, better the shielding effectiveness is in the investigated frequency band when plasma collision frequency is fixed. It was also demonstrated that the shielding effectiveness of proposed structure can be tuned by changing plasma collision frequency. INDEX TERMS cold plasma, multilayered shield, shielding effectiveness, tunable electromagnetic shield

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Section: Introductionmentioning

confidence: 99%

Four-Layer Tunable Wideband Electromagnetic Shield Based on Cold Plasma

Liu

2020

IEEE Access

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“…Using scattering matrix method (SMM), Tang et al [22] analyzed the broadband absorption characteristics of magnetized non-uniform plasma. Jazi et al [24] provided an analytical method to study the reflection and absorption of electromagnetic waves in an inhomogeneous dissipative magnetized plasma slab, and also discussed the effects of an external magnetic field, the frequency of an incident wave, as well as the electron thermal velocity. The finite-difference time-domain (FDTD) method was also successfully employed to simulate the electromagnetic waves propagating in magnetized plasma [25]- [28].…”

Section: Introductionmentioning

confidence: 99%

Reflection, Transmission, and Absorption of Vortex Beams Propagation in an Inhomogeneous Magnetized Plasma Slab

Honary

et al. 2018

IEEE Trans. Antennas Propagat.

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Based on the angular spectrum expansion and the 4x4 transfer matrix method, an investigation into the reflection, transmission, and absorption of vortex beams in an inhomogeneous magnetized plasma slab is presented. The reflected and transmitted electric fields are expressed by the inverse Fourier transform of the product of the reflected and transmitted coefficients and the angular spectrum amplitude of the incident beam. The intensity profiles, as well as the distortion of OAM states in both the reflected and transmitted beams are simulated and discussed. Through this investigation it could be concluded that both the incident angle and the plasma parameters have significant impact on the magnitudes of reflected and transmitted intensities, and the distortion of OAM states. The effects of the magnetic field and the incident angle on the reflectance, transmittance, and absorptance of the power have also been reported.

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“…In recent years, microwave measurements have been increasingly applied to obtain the electron density and collision frequency because of the sensitive response of the interaction between the plasma and the microwave. Regarding plasma as a dispersive medium, the transmission [11], [12] and reflection [13], [14], [22] of EM waves are mostly utilized to analyze or retrieve the characteristics of the plasma through the microwave diagnostic. Furthermore, as a more accurate method, the microwave interferometer measuring method has also been used for measuring ionization in shocked air [16], [23].…”

Section: Introductionmentioning

confidence: 99%

Multifrequency Method for Measuring Properties of Shock Tube Produced Plasma

Bai

Miao

2015

IEEE Trans. Plasma Sci.

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A novel multifrequency method is introduced in this paper for measuring the plasma produced by a 800-mm shock tube. The core of the measured object is a volume of relatively uniform plasma contained by the rectangular test section, and the dual-frequency or multifrequency configuration of the measuring system enables the coherent cancellation of measurement deviations. Based on the Lorentz model of plasma, the obvious correspondence exists between the plasma parameters and the transmittance variation with different frequencies of the electromagnetic wave; hence, the electron density N e and the collision frequency ν of the plasma could be retrieved according to the measured transmittance. A dual-frequency system is established as the verification of the proposed method. The measured values of the electron density by the proposed method are compared with those obtained by other means, and the results are in good agreement.Index Terms-Collision frequency, electron density, multifrequency method, plasma, shock tube.

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Reflection and Absorption of Electromagnetic Wave Propagation in an Inhomogeneous Dissipative Magnetized Plasma Slab

Cited by 39 publications

References 28 publications

Four-Layer Tunable Wideband Electromagnetic Shield Based on Cold Plasma

Four-Layer Tunable Wideband Electromagnetic Shield Based on Cold Plasma

Reflection, Transmission, and Absorption of Vortex Beams Propagation in an Inhomogeneous Magnetized Plasma Slab

Multifrequency Method for Measuring Properties of Shock Tube Produced Plasma

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