Properties of Terahertz Waves Propagation in a Bounded Plasma Slab with High Collision Frequency and High Density

Yuan, Chengxun; Zhou, Zhongxiang; Xiang, Xiaoli

doi:10.1109/icoip.2010.9

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…The multiple reflections occur at the interfaces z = 0 and z = −d. The Maxwell's equations are as following [21,22]:…”

Section: Physical Modelmentioning

confidence: 99%

Theoretical and Experimental Studies of 35 GHZ and 96 GHZ Electromagnetic Wave Propagation in Plasma

Liang¹,

Zhao²,

Liu³

et al. 2012

PIER M

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The 35 GHz and 96 GHz electromagnetic wave propagation characteristics in plasma are studied theoretically and experimentally in this paper. The variations of the electromagnetic wave attenuation along with the plasma density, plasma collision frequency and electromagnetic wave frequency are acquired based on the physical model. The electromagnetic wave propagation properties in plasma are studied experimentally with the shock tube, and the experimental results match well with the theoretical ones. Both the theoretical and experimental results indicate that increasing the electromagnetic wave frequency is an alternative and effective method to solve the reentry blackout problem.

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“…The multiple reflections occur at the interfaces z = 0 and z = −d. The Maxwell's equations are as following [21,22]:…”

Section: Physical Modelmentioning

confidence: 99%

Theoretical and Experimental Studies of 35 GHZ and 96 GHZ Electromagnetic Wave Propagation in Plasma

Liang¹,

Zhao²,

Liu³

et al. 2012

PIER M

View full text Add to dashboard Cite

show abstract

“…This model has also been used by many researchers to deal with the transport problem in plasmas [35,36]. However, some researchers found that the improved Epstein model could be a better choice for describing the electron density distribution when the spacecraft returns to the Earth to enter the atmosphere [37,38]. Thus, in our work, the improved Epstein model is adopted to study the transmission characteristics of terahertz waves in high-temperature magnetized plasma.…”

mentioning

confidence: 99%

Transmission characteristics of terahertz waves in high-temperature inhomogeneous magnetized plasma

Wan¹,

Zhou²,

Zhang³

et al. 2021

EPL

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The transmission characteristics of terahertz waves propagating in high-temperature magnetized inhomogeneous plasma are theoretically analyzed. The influence of physical parameters, such as the electron density, collision frequency, plasma thickness, magnetic field strength, electron temperature, and so on, on the transmission properties is considered systematically. Numerical results show that these parameters will affect the propagation characteristics of terahertz waves travelling in plasma. Especially, when the electron temperature of the plasma or the magnetic field is adjusted to an appropriate value, a sharp transmissivity peak (absorptivity valley) will be produced in the stop band. As the intensity of the magnetic field increases, the corresponding frequency of the transmissivity peak (absorptivity valley) will gradually shift to higher frequencies. The peak (valley) value will gradually increase as the electron temperature increases. These theoretical results may be used to effectively alleviate the “blackout problem”.

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Propagation Characteristics of Modulated EHF Signal in the Wake Region of Plasma Sheath

et al. 2022

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A large number of studies have confirmed that the wake region may be a more ideal antenna installation area for the reentry vehicle communication problem, but many practical issues such as how to choose the modulation mode, carrier frequency, and antenna orientation are still pending. Based on numerical simulations, the characteristics of tail channels and the bit error rate (BER) of extremely high-frequency (EHF) communication in the wake region of the plasma sheath of hypersonic vehicle are studied. It is found that, with an increase in the angle between the tail channel and the tail of the vehicle, the attenuation of the EHF signals decreases and the phase shift fluctuates more severely. In order to obtain better communication performance, 2PSK with a carrier frequency of 140 GHz or 225 GHz, or 4QAM (QPSK) modulation with a carrier frequency of 140 GHz, and the tail channel with an angle between 50°and 60°to the tail of the vehicle can be selected. This study reveals the propagation characteristics and BER performance of EHF signals in the wake region of plasma sheath, which can provide a valuable reference for the design of the hypersonic vehicle communication system.

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Properties of Terahertz Waves Propagation in a Bounded Plasma Slab with High Collision Frequency and High Density

Cited by 3 publications

References 39 publications

Theoretical and Experimental Studies of 35 GHZ and 96 GHZ Electromagnetic Wave Propagation in Plasma

Theoretical and Experimental Studies of 35 GHZ and 96 GHZ Electromagnetic Wave Propagation in Plasma

Transmission characteristics of terahertz waves in high-temperature inhomogeneous magnetized plasma

Propagation Characteristics of Modulated EHF Signal in the Wake Region of Plasma Sheath

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