Propagation of terahertz waves in a magnetized, collisional, and inhomogeneous plasma with the scattering matrix method

Zhang, Youyi; Xu, Guanjun; Zheng, Zhengqi

doi:10.1016/j.ijleo.2019.01.054

Cited by 26 publications

(10 citation statements)

References 20 publications

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“…In addition, THz wave has the characteristics of strong penetration and good directivity. To achieve proper propagation characteristics for the specific application in the dusty plasma, the EM waves were expanded from radio frequency to THz frequency [ 25 ]. Therefore, the differences of the propagation properties of THz waves under different plasmas are compared, as well as the model with and without a ceramic substrate is analyzed.…”

Section: Introductionmentioning

confidence: 99%

Study on the Propagation Characteristics of Terahertz Waves in Dusty Plasma with a Ceramic Substrate by the Scattering Matrix Method

Rao

Wang

et al. 2021

Sensors

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The propagation characteristics of terahertz (THz) waves incident vertically into inhomogeneous and collisional dusty plasma with a ceramic substrate are studied using the scattering matrix method (SMM). The effects of the incident wave frequency and plasma parameters, such as the maximal electron density, dust particle density, dust particle radius and collision frequency, on the reflectance and transmittance of THz waves in the dusty plasma are discussed. In addition, the differences of the propagation properties in the dusty plasma, with and without ceramic substrate, are analyzed. Meanwhile, the differences of the propagation properties in dusty plasma and common plasma, respectively, with ceramic substrate are also compared. Simulation results show that the substrate and dust particles have significant influence on the propagation characteristics of THz wave in plasma sheath. Finally, the transmission increases with the increase of electron density, dust density, dust particle radius and collision frequency.

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Section: Introductionmentioning

confidence: 99%

Study on the Propagation Characteristics of Terahertz Waves in Dusty Plasma with a Ceramic Substrate by the Scattering Matrix Method

Rao

Wang

et al. 2021

Sensors

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“…Numerous studies have been carried out to investigate the characteristics of EM wave propagation in a plasma slab, and these have achieved fruitful results [6,7]. In [8], the reflectance, transmittance, and absorbance of an EM wave propagating through an inhomogeneous, collisional, magnetized plasma were extensively studied. e differences between the effects of three electron density profiles, with uniform, parabolic, and double exponential distributions, on the propagation properties were also compared.…”

Section: Introductionmentioning

confidence: 99%

Study of the Propagation Characteristics of Terahertz Waves in a Collisional and Inhomogeneous Dusty Plasma with a Ceramic Substrate and Oblique Angle of Incidence

Rao

Wang

et al. 2021

International Journal of Antennas and Propagation

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In this paper, the propagation properties of a terahertz (THz) wave in a collisional and inhomogeneous dusty plasma with a ceramic substrate and oblique angle of incidence are studied using the scattering matrix method. The influence of the various corresponding parameters, such as the frequency of the THz wave, angle of incidence, electron density, radius and density of the dust particles, and the collision frequency, on the absorbance and transmittance is calculated. The results of the simulation indicate that an increase in the wave frequency increases the transmittance and decreases the absorbance. Moreover, the absorbance of a THz wave in a dusty plasma with a ceramic substrate increases with an increase in the incident angle, maximum electron density, coefficient of steepness, density and radius of the dust particles, and collision frequency. These results provide an important theoretical basis for the problem of communication blackout between ground and spacecraft.

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“…Nevertheless, these studies have a number of limitations. For one thing, most of these research studies regarded the collision frequency as uniform, while the collision frequency in plasma is nonuniform, especially the plasma sheath around a hypersonic vehicle [9][10][11]. For another, only fewer research studies considered the variation of the polarization state of obliquely incident EM waves in the plasma medium.…”

Section: Introductionmentioning

confidence: 99%

Polarization Properties of Obliquely Incident EM Waves in Nonuniform Weakly Ionized Dusty Plasma

Gan

Guo

et al. 2021

International Journal of Antennas and Propagation

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Effects of nonuniform weakly ionized dusty plasma on the polarization properties of obliquely incident electromagnetic (EM) waves were theoretically investigated in this paper. The dielectric coefficient of magnetized dusty plasma is obtained based on the Bhatnagar–Gross–Krook collision model. Then, the effects of external magnetic field, dust radii, and density on the polarization mismatch loss of obliquely incident EM waves in the L-band were analyzed using the equivalent impedance method. Results indicate that the larger the external magnetic field, the greater the polarization mismatch loss. In addition, we also found that dusty particles alleviate the deterioration of the polarization state significantly; regulating and controlling dust radius and density can avoid polarization reversal and reduce the polarization mismatch loss. We further analyzed the variation of the polarization state under different reentry heights. Our analysis reveals interesting features concerning polarization properties of obliquely incident EM waves, which provide an important theoretical basis for information reception in the plasma sheath containing ablative particles.

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Propagation of terahertz waves in a magnetized, collisional, and inhomogeneous plasma with the scattering matrix method

Cited by 26 publications

References 20 publications

Study on the Propagation Characteristics of Terahertz Waves in Dusty Plasma with a Ceramic Substrate by the Scattering Matrix Method

Study on the Propagation Characteristics of Terahertz Waves in Dusty Plasma with a Ceramic Substrate by the Scattering Matrix Method

Study of the Propagation Characteristics of Terahertz Waves in a Collisional and Inhomogeneous Dusty Plasma with a Ceramic Substrate and Oblique Angle of Incidence

Polarization Properties of Obliquely Incident EM Waves in Nonuniform Weakly Ionized Dusty Plasma

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