Polarization-independent frequency-selective rasorber with a broadened absorption band

Chen, Qiang; Guo, Min; Sun, Zhanshan; Sang, Di; Fu, Yunqi

doi:10.1016/j.aeue.2018.09.013

Cited by 12 publications

(4 citation statements)

References 18 publications

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“…To further enhance the stealth performance of FSS design, an integrated design with metamaterial absorbers, known as superstrate absorbers, has been proposed. From the relationship between absorption bands and transmission windows, FSS absorbers can be classified into three types: (1) low-frequency absorption and high-frequency transmission [6,7] (2) low-frequency transmission and high-frequency absorption [8,9], and (3) absorption bands on both sides of the passband [10][11][12]. Metamaterial absorbers are a type of artificial, sub-wavelength, two-dimensional structure capable of absorbing specific frequency bands of electromagnetic waves [13,14].…”

Section: Introductionmentioning

confidence: 99%

A compact frequency-selective absorber with optical transparency

Deng,

Li,

Wang

et al. 2024

Mater. Res. Express

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This article proposes a new method for designing an optical transparent frequency-selective surface absorber using indium tin oxide (ITO) conductive film with different sheet resistances. This novel optical transparent frequency-selective absorber exhibits excellent optical transparency, ensuring a visible light transmittance exceeding 76%. Simultaneously, it exhibits broadband absorption characteristics covering the entire X-Ku band, with an absorption rate exceeding 90%. Due to the simplicity of the design, the overall structure is easily processable, and the desired product can be rapidly fabricated using laser etching equipment without adding any lumped elements in the design. Simulation and experimental results indicate that the S11-10dB frequency range of the frequency-selective absorber is 7.7-18.4 GHz, with a transmission frequency range below -3dB between 26.7-29.4 GHz. The findings suggest that this structure holds potential applications in microwave stealth design requiring optical transparency and high-throughput satellite communication scenarios.

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Section: Introductionmentioning

confidence: 99%

A compact frequency-selective absorber with optical transparency

Deng,

Li,

Wang

et al. 2024

Mater. Res. Express

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“…In recent decades, some FSRs have been widely proposed and published [5][6][7][8][9][10]. Existing FSRs can generally be classified into three categories based on the relative positions of the transmission window and absorption bands: (1) the transmission window below an absorption band (TA-FSR) [5,6], (2) the transmission window above the absorption band (AT-FSR) [7,8], and (3) the transmission window within the absorption bands (ATA-FSR) [9,10]. However, in the previous literature, a common feature of FSRs is that they are narrow transmission windows.…”

Section: Introductionmentioning

confidence: 99%

Broadband-Transmissive, Frequency-Selective Rasorber Design Using Characteristic Mode Analysis

Xiong

Yang

et al. 2022

Electronics

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This article designs a frequency-selective rasorber (FSR) with a broadband transmission window. It is synthesized by a broadband absorber and a frequency-selective surface (FSS). The resistive layer achieves broadband absorption by introducing a tortuous Jerusalem cross load with lumped resistors, and the lossless FSS adopts a three-layer metal structure to realize the broadband transmission window. The absorption mechanism of the resistive layer is analyzed using the theory of characteristic mode. The position of the resistor is determined according to the analysis of mode current distribution and parameter optimization. Prototypes of the structure were fabricated and measured, and the simulation results show that the 1 dB transmission window and the absorption band with |S11|< −1 dB are 36.4% and 97%, respectively. Therefore, the designed FSR has potential application prospects in electromagnetic stealth technology and radar cross-section reduction.

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“…Later, to enhance the flexibility and application scope of FSR, some more complicated structures were designed. Such as FSRs with two-sided absorption bands reported in [16][17][18][19], FSRs with high-frequency passband reported in [20][21][22][23], and employing the 3D FSS concept proposed in [24][25][26][27]. However, 3D FSR structures are usually more complex and require a higher cost to fabricate.…”

Section: Introductionmentioning

confidence: 99%

A miniaturized frequency selective rasorber with high selectivity passband and wideband absorption properties

Xiong

Feng

et al. 2021

EPJ Appl. Metamat.

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A miniaturized frequency selective rasorber (FSR) with high selectivity passband and wideband absorption properties is presented. Its performance as an absorber over a wide absorption band from 8.08 to 18.08 GHz through the structure of metal incurved square loop structure loaded resistors. The frequency selective surface (FSS) using Jerusalem cross array and metallic patch realizes the transmission frequency band from 2.7 to 3.52 GHz. And the insertion loss (IL) is 0.37 dB at 3.08 GHz. The symmetry and miniaturized elements design enable the proposed FSR to achieve satisfactory incident angle stability. Its small unit size effectively avoids the generation of grating lobes in the absorption band and the interference to Radar Cross Section (RCS) reduction.

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Polarization-independent frequency-selective rasorber with a broadened absorption band

Cited by 12 publications

References 18 publications

A compact frequency-selective absorber with optical transparency

A compact frequency-selective absorber with optical transparency

Broadband-Transmissive, Frequency-Selective Rasorber Design Using Characteristic Mode Analysis

A miniaturized frequency selective rasorber with high selectivity passband and wideband absorption properties

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