Transmission and backscattering characteristics of electromagnetic waves in single layer combined plasma array

Deng, Xuesong; Li, Cheng; Shi, Junbo; Fang, Ming; Chen, Zongsheng; Li, Zhigang; Wang, Yahui; Lv, Xin

doi:10.1088/1361-6463/ac5146

Cited by 10 publications

(13 citation statements)

References 21 publications

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“…Due to the difficulty associated with generating and maintaining a certain density of plasma in a lowaltitude open environment [43,44] the plasma in the closed cavity with low gas pressure is used in this paper. High-purity argon is used to fill the closed cavity, which is made of glass with a thickness of t glass and a permittivity of 3.8 [31,45] and the thickness of plasma is denoted as t . plasma One of the most common methods for generating plasma is by applying an electric field to the neutral gas [38,46].…”

Section: The Physical Model Of the Proposed Absorbermentioning

confidence: 99%

Design of a wideband and tunable radar absorber

Gao,

Dou,

Peng

et al. 2023

Mater. Res. Express

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To effectively address the challenges posed by intricate and dynamic electromagnetic environments, we propose a wideband and tunable radar absorber in this paper. The proposed absorber, composed of graphene capacitor, plasma enclosed within a sealed glass cavity, radar absorbing material (RAM), FR-4 and copper plate, allows for tunable radar absorbing performance through the manipulation of the electromagnetic properties of the graphene capacitor and plasma. Based on the equivalent circuit model, the reflectivity of the radar absorber is analyzed using transmission line theory (TLT). Good agreement is observed between the full-wave simulations and the TLT. The study thoroughly investigates the influence of graphene, plasma, and RAM components, as well as their sequential arrangement within the radar absorber, on its reflectivity, expounding the fundamental mechanism of these materials' synergistic integration. Additionally, the effects of key factors, including the surface resistance R_g of graphene, plasma frequency w_p, collision frequency v_p and plasma thickness t_plasma, on the radar absorbing performance are examined. Our findings reveal that adjusting surface resistance R_g controls the absorbing amplitude, and manipulation of the plasma frequency and collision frequency tunes the absorbing frequency and effective absorbing band. By appropriately adjusting the surface resistance R_g of graphene, plasma frequency w_p and collision frequency v_p, the proposed radar absorber exhibits superior performance in the frequency range of 1GHz to 10GHz. The radar absorber we propose serves as a significant reference for the application of tunable radar absorbers and adaptive radar stealth techniques.

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Section: The Physical Model Of the Proposed Absorbermentioning

confidence: 99%

Design of a wideband and tunable radar absorber

Gao,

Dou,

Peng

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…The cavity is filled mainly with argon and mercury, and the gas pressure was typically 2-3 Torr. The model of the vector network analyzer (VNA) is ANRITSU 3734D, which can measure the frequency range from 40 MHz to 20 GHz [20]. Setting the time domain threshold can avoid space clutter interference so that the experimental results are more accurate than not.…”

Section: Plasma Diagnosticsmentioning

confidence: 99%

Investigation into wideband electromagnetic stealth device based on plasma array and radar-absorbing materials

Deng¹,

Ding²,

Wang³

et al. 2022

Plasma Sci. Technol.

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Manipulation of electromagnetic waves is essential to various microwave applications, and absorbing devices composed of low-pressure gas discharge tubes and radar-absorbing materials (RAM) can bring new solutions to broadband electromagnetic stealth. The microwave transmission method is used to measure the physical parameters of the plasma unit. The designed structure exhibits superior absorption performance and radar cross-section (RCS) reduction capability in the 2-18 GHz band, with unique absorption advantages in the S/C frequency band. It is found that the combination of the plasma and the RAM can significantly broaden the absorption frequency band and improve the absorption performance with excellent synergistic stealth capability. Experimental and simulation results show that broadband, wide-angle, tunable electromagnetic wave absorption and RCS reduction can be achieved by adjusting the spatial layout of the combined plasma layer and the type of RAMs, which creates opportunities for microwave transmission and selective stealth of equipment. Therefore, the wave manipulation by combined plasma array and RAM provides a valuable reference for developing numerous applications, including radar antenna stealth, spatial filter, and high power microwave shielding.

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“…In contrast, the amplitude of electromagnetic waves varies significantly with the plasma electron density. It reveals that a monolayer plasma array composed of discharge tubes can efficiently modulate electromagnetic waves [32,33]. The electromagnetic waves amplitude modulation can endow the plasma antenna with the beam-scanning capability.…”

Section: Introductionmentioning

confidence: 99%

Plasma-enabled microwave modulation for continuous beam scanning

Ye¹,

Wang²,

Yao³

et al. 2022

J. Phys. D: Appl. Phys.

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The continuous beam scanning capability is a key characteristic of the reconfigurable antenna in wireless communication. In this work, we theoretically imply that the plasma columns are capable of smoothly manipulating the transmission of the electromagnetic waves. And then we propose a plasma-based microwave modulation method for obtaining a high precision beam scanning over 360 degrees on the azimuthal plane by tailoring the operating currents in 22-tube plasma window antenna system. Through this simple current modulation approach, a continuous beam scanning is achieved at the reconfiguration time of 0.6 ms without any detriment to the lobe shape.

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Transmission and backscattering characteristics of electromagnetic waves in single layer combined plasma array

Cited by 10 publications

References 21 publications

Design of a wideband and tunable radar absorber

Design of a wideband and tunable radar absorber

Investigation into wideband electromagnetic stealth device based on plasma array and radar-absorbing materials

Plasma-enabled microwave modulation for continuous beam scanning

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