Analysis of Terahertz Wave on Increasing Radar Cross Section of 3D Conductive Model

Liu, Hongyao; Wang, Panpan; Wu, Jiali; Yan, Xin; Zhang, Yangan; Zhang, Xia

doi:10.3390/electronics10010074

Cited by 7 publications

(1 citation statement)

References 29 publications

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“…Moreover, the conventional metamaterial design was also applied for terahertz frequency applications and became famous among the scientific community. In 2021, Liu et al [ 17 ] adopted the Runge–Kutta exponential time differencing-finite difference time domain method, used to compute and simulate the RCS of the three-dimensional conductive model at terahertz frequency. Furthermore, this paper analyses the interaction between a magnetic plasma sheath and a terahertz wave.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Radar Cross Section by Adopting Symmetrical Coding Metamaterial Design for Terahertz Frequency Applications

et al. 2023

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This work focused on the novel and compact 1-bit symmetrical coding-based metamaterial for radar cross section reduction in terahertz frequencies. A couple of coding particles were constructed to impersonate the elements ‘0′ and ‘1′, which have phase differences of 180°. All the analytical simulations were performed by adopting Computer Simulation Technology Microwave Studio 2019 software. Moreover, the transmission coefficient of the element ‘1′ was examined as well by adopting similar software and validated by a high-frequency structure simulator. Meanwhile, the frequency range from 0 to 3 THz was set in this work. The phase response properties of each element were examined before constructing various coding metamaterial designs in smaller and bigger lattices. The proposed unit cells exhibit phase responses at 0.84 THz and 1.54 THz, respectively. Meanwhile, the analysis of various coding sequences was carried out and they manifest interesting monostatic and bistatic radar cross section (RCS) reduction performances. The Coding Sequence 2 manifests the best bistatic RCS reduction values in smaller lattices, which reduced from −69.8 dBm2 to −65.5 dBm2 at 1.54 THz. On the other hand, the monostatic RCS values for all lattices have an inclined line until they reach a frequency of 1.0 THz from more than −60 dBm2. However, from the 1.0 THz to 3.0 THz frequency range the RCS values have moderate discrepancies among the horizontal line for each lattice. Furthermore, two parametric studies were performed to examine the RCS reduction behaviour, for instance, multi-layer structures and as well tilt positioning of the proposed coding metamaterial. Overall it indicates that the integration of coding-based metamaterial successfully reduced the RCS values.

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Section: Introductionmentioning

confidence: 99%

Reduction of Radar Cross Section by Adopting Symmetrical Coding Metamaterial Design for Terahertz Frequency Applications

et al. 2023

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Analysis of terahertz wave penetration capacity to 2D conductive cylinder coated with steady-state parabolic distribution plasma media

2021

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Wideband RCS reduction due to plasma generated by radioactive nuclei for cylindrical object

Ramezani

Razavi

2022

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Radar cross section reduction has been one of the most important research topics in recent years. Plasma-based stealth is a method of reducing the radar cross section, which dampens the electromagnetic waves and reduces the amount of return waves. In this paper, a coating of the radioactive nucleus $$^{241}{\mathrm{Am}}$$ 241 Am on the surface of the cylinder with a radius of 10 cm is considered and the range of the emitted alpha particles and the electron density generated in the air are obtained using the Geant4 code under standard temperature and pressure conditions. By finite element method solution, the radar cross section of the conductive cylindrical object has been simulated and extracted in the presence and absence of plasma created by alpha-particles. The obtained results show a reduction of 5–8 dB $$\mathrm{m}^2$$ m 2 in the radar cross section in the frequency range of 2–12 GHz for specific activity source of 1 Ci/$$\mathrm{cm}^2$$ cm 2 .

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Analysis of Terahertz Wave on Increasing Radar Cross Section of 3D Conductive Model

Cited by 7 publications

References 29 publications

Reduction of Radar Cross Section by Adopting Symmetrical Coding Metamaterial Design for Terahertz Frequency Applications

Reduction of Radar Cross Section by Adopting Symmetrical Coding Metamaterial Design for Terahertz Frequency Applications

Analysis of terahertz wave penetration capacity to 2D conductive cylinder coated with steady-state parabolic distribution plasma media

Wideband RCS reduction due to plasma generated by radioactive nuclei for cylindrical object

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