Graphene-based Flexible Absorptive Frequency Selective Surface

Yang, Yaojia; Wu, Bian; Li, Huiling; Liu, Xiaochun; Chen, Liang

doi:10.1109/csqrwc.2019.8799339

Cited by 2 publications

(5 citation statements)

References 4 publications

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“…From Equation (19), the RCS reduction level of the proposed radome compared to the metal plane can be calculated under incident waves of two polarizations. As can be seen in Figure 3B, the corresponding RCS reduction is greater than 10 dB in the frequency bands where the absorption is greater than 90%.…”

Section: Simulation Analysismentioning

confidence: 99%

“…In some other studies, the communication band is outside the absorptive band for out-of-band RCSR, and its absorptive/transmissive states are fixed, despite the relative bandwidth being more than 90%. [17][18][19][20][21] A broadband polarization-insensitive tunable rasorber based on AFSS was proposed, 22,23 which can be dynamically tuned from a fully reflected state to an absorptive state in 8.5-18.2 GHz by changing the bias voltage on the PIN diode. The absorber is broadband and reconfigurable, but it is limited to all/nonabsorbing, which does not have the coexistence of two states.…”

Section: Introductionmentioning

confidence: 99%

“…Although it can achieve a broadband RCSR from 1 to 13 GHz, the reduction is only 3 dB on average. In some other studies, the communication band is outside the absorptive band for out‐of‐band RCSR, and its absorptive/transmissive states are fixed, despite the relative bandwidth being more than 90% 17–21 . A broadband polarization‐insensitive tunable rasorber based on AFSS was proposed, 22,23 which can be dynamically tuned from a fully reflected state to an absorptive state in 8.5–18.2 GHz by changing the bias voltage on the PIN diode.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A broadband reconfigurable rasorber radome based on AFSR for RCS reduction

Xue,

Chen,

et al. 2024

Micro & Optical Tech Letters

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In this paper, a broadband reconfigurable active frequency selective rasorber is proposed, which can be used as a radome for antenna radar cross section (RCS) reduction. By tuning the active components, the radome can achieve in‐band RCS reduction and reconfigurable absorptive/transmissive states. In the absorptive state, the max bandwidth with an absorption rate greater than 90% spanning from 1.62 to 5.37 GHz; in the absorptive/transmissive state, 2.2 GHz is the transmissive frequency with the insertion loss of 93% while absorbing in 0.94–2.06 GHz and 2.63–6.5 GHz, which demonstrate impressive characteristics of broadband and a high absorption rate. Additionally, the radome can maintain performance at ±35° angular incidence and is insensitive to incident wave polarization. Furthermore, it features a lightweight and low‐profile design, with a cell electrical size of just 0.078λ × 0.078λ × 0.066λ. The prototype test shows a noteworthy correlation with simulation. This study has wider applications in the electromagnetic stealth of communication antennas and aircraft, as well as in the control of electromagnetic pollution signals in space.

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Section: Simulation Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A broadband reconfigurable rasorber radome based on AFSR for RCS reduction

Xue,

Chen,

et al. 2024

Micro & Optical Tech Letters

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“…[ 14,15 ] However, the process of making these curved FSS is tedious, costly and not highly accurate. Flexible stretchable FSS [ 16–20 ] can be tightly adhered to nondevelopable surfaces via stretching, which is not only cost‐effective but also convenient for the application scenarios since it can be applied and removed at any time. [ 21 ] Yang et al.…”

Section: Introductionmentioning

confidence: 99%

“…[ 21 ] Yang et al. [ 16 ] introduced a flexible frequency selective surface absorber consisting of an ecoflex flexible substrate and the graphene resistive sheet, which has better absorption characteristics at low frequencies. Song et al.…”

Section: Introductionmentioning

confidence: 99%

3D Flexible Frequency Selective Surface with Stable Electromagnetic Transmission Properties

Fan

Pan

Chen

et al. 2022

Adv Materials Technologies

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Frequency selective surfaces (FSS) that can be tightly laminated to complex nondevelopable surfaces have a wide range of applications in many engineering areas. This paper presents a 3D flexible FSS prepared by mechanically guided 3D assembly, capable of being conformally adhered to complex surfaces, while maintaining stable frequency selective properties as well as transmission performance. The stretching strain applied to the prestrained ecoflex substrate can precisely tune and control the buckled 3D metal structures, which leads to the stretchability of the flexible FSS, introduces the increase of the inductance inside the metal cells, and expands the metal gap resulting in a reduction of the capacitance between the unit cells. The mutual correlation of capacitance and inductance ensures in the mechanism that the FSS transmission characteristics will not be significantly affected by the applied strain, as verified by calculations using the equivalent circuit method. Both the results obtained by the experiments and simulations indicate that the resonant frequency of the 3D flexible FSS is 5.7 GHz and the bandwidth at −10 dB is 0.94 GHz, while the resonant frequency shift will not exceed 0.45 Hz, and −10 dB bandwidth change will not exceed 0.32 GHz with applied strain of 17.8% in the ecoflex substrate. At the same time, the 3D flexible FSS maintains stable transmission performance for oblique incidence, with only 0.5 GHz frequency shift at 45° incidence. This stretchable flexible FSS with stable electromagnetic (EM) properties may find potential applications in EM shielding and spatial filtering due to its high flexibility, ready applicability, and cost‐effectiveness.

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Graphene-based Flexible Absorptive Frequency Selective Surface

Cited by 2 publications

References 4 publications

A broadband reconfigurable rasorber radome based on AFSR for RCS reduction

A broadband reconfigurable rasorber radome based on AFSR for RCS reduction

3D Flexible Frequency Selective Surface with Stable Electromagnetic Transmission Properties

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