Miniaturized Frequency Selective Rasorber Based on Meander-Lines Loaded Lumped Resistors and a Coupled Resonator Spatial Filter

Shen, Zhaoshuzhou; Kou, Na; Yu, Shixing; Ding, Zhao; Zhang, and Zhengping

doi:10.2528/pierm20010503

Cited by 4 publications

(4 citation statements)

References 21 publications

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“…This can be attributed to the fact that dual-layer designs that incorporate an air gap can offer higher bandwidths, as one may notice in [21]- [25]. From the manufacturing point of view, adding a carbon paste layer is much easier than adding discrete resistances, as proposed in [20]- [23], where four resistors are needed per unit cell, or as in [24], where one lumped resistor and a via were used in each unit cell. In [23], four lumped resistors and a combination of three layers were used to achieve larger bandwidth.…”

Section: Open Inner Ring With Paste In Three Regionsmentioning

confidence: 99%

“…From the manufacturing point of view, adding a carbon paste layer is much easier than adding discrete resistances, as proposed in [20]- [23], where four resistors are needed per unit cell, or as in [24], where one lumped resistor and a via were used in each unit cell. In [23], four lumped resistors and a combination of three layers were used to achieve larger bandwidth. Moreover, the proposed design has a thickness of merely 1.6 mm, compared to the air-gapped design's overall thickness of 23.2 mm [21], and 17 mm [25].…”

Section: Open Inner Ring With Paste In Three Regionsmentioning

confidence: 99%

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Radar Cross-section Reduction of Planar Absorbers Using Resistive FSS Unit Cells

Jasim,

Sayidmarie

2023

JTIT

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This paper demonstrates the feasibility of reducing radar cross-section by employing resistive sheets or rings in the conducting elements of an FSS unit cell. The idea behind the approach in question is to create power-absorbing elements which may help reduce the power reflected from FSS surface. The investigated FSS unit cells have the form of double-closed rings and double-closed-split rings. A carbon paste, serving as the resistive layer, was inserted in various regions within the unit cell. The CST Microwave Studio software was used to obtain the reflection coefficient. Specific dimensions and conductivity of the paste were selected to ensure better performance. Simulation results showed that the reflection coefficient may be reduced by 8 dB, to 14 dB, by using carbon paste with the conventional copper layer.

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Section: Open Inner Ring With Paste In Three Regionsmentioning

confidence: 99%

Section: Open Inner Ring With Paste In Three Regionsmentioning

confidence: 99%

Radar Cross-section Reduction of Planar Absorbers Using Resistive FSS Unit Cells

Jasim,

Sayidmarie

2023

JTIT

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“…Consequently, numerous FSRs with excellent performance and various requirements have been reported in recent years [10][11][12][13][14][15][16]. According to the relative location of the transmission and absorption bands, current available FSRs can be classified into three categories, including absorption-transmission (AT) [17][18][19][20], transmission-absorption (TA) [21][22][23][24], and absorption-transmission-absorption (ATA) [25][26][27][28][29][30][31]. FFollowing the broadband trend of modern EM stealth, shielding and compatible systems, dual-polarized ATA FSRs with ultra-wide and high-transmission passband are of great interest and expectation due to their safest and most practical EM transparent windows.…”

Section: Introductionmentioning

confidence: 99%

Multi-characteristic Integrated Ultra-wideband Frequency Selective Rasorber

Wang,

Cui,

Liu

et al. 2024

PIER

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Frequency selective rasorbers (FSRs), especially those with ultra-wideband and hybrid characteristics, are of great significance in modern stealth technology and applications. However, currently available FSRs have issues with limited transmission bandwidth and single operating characteristics. Here, a novel strategy is proposed to design multi-characteristic integrated FSRs with ultra-wide and high-efficiency passband via spoof surface plasmon polariton (SSPP). The designed FSR exhibits the characteristics of absorptiontransmission (AT), transmission-absorption (TA), and absorption-transmission-absorption (ATA), which consists of AT resistive sheets, TA SSPP slow-wave structures, and ultra-wideband bandpass frequency selective surface (FSS). The top lumped-resistor-loaded resistive sheet and the bottom multi-layer cascaded FSS form an AT FSR which is demonstrated by equivalent circuit model (ECM). Middle dispersion gradient SSPP structure that generates SSPP on the periodic array is an independent TA FSR while the working principle is based on k-dispersion control and energy distribution. Thus, the transition band between the transmissive and absorptive bands is narrowed while the crosstalk between absorber and transmission is avoided. For verification, a prototype is fabricated and experimentally demonstrated. Measured results manifest the validity and feasibility of the FSR with an ultra-wide −1 dB transmission band from 8.9 to 16.4 GHz (59.3%) and two 85% absorption bands covering 2.2-6.4 GHz (97.7%) and 17.6-26 GHz (38.5%). Our work provides a novel method for the design of an ultra-wideband multi-characteristic FSR and stimulates its application in broadband electromagnetic stealth, shielding and compatible devices.

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“…Since the continuous modification of such structures from bottom to top can initiate different resonances, a broadband absorption can be achieved. Furthermore, in recent research studies, some novel photonic structures such as frequency selective rasorber (FSR) with both wide absorption and transmission bands 59 , 60 , and innovative reflective meta-mirror with an ultra-wideband and high-efficiency characteristics by tuning the phase dispersion and reflection amplitude have been designed to achieve a wideband spectrum 61 .…”

Section: Introductionmentioning

confidence: 99%

Multi-octave metasurface-based refractory superabsorber enhanced by a tapered unit-cell structure

Habil

Ghahremani

Zapata–Rodríguez

2022

Sci Rep

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An ultra-broadband metasurface-based perfect absorber is proposed based on a periodic array of truncated cone-shaped $$\text {TiO}_2$$ TiO 2 surrounded by TiN/$$\text {TiO}_2$$ TiO 2 conical rings. Due to the refractory materials involved in the metasurface, the given structure can keep its structural stability at high temperatures. The proposed structure can achieve a broadband spectrum of 4.3 µm at normal incidence spanning in the range of 0.2–4.5 µm with the absorption higher than $$90\%$$ 90 % and the average absorption around $$94.71\%$$ 94.71 % . The absorption can be tuned through the angle of the cone. By optimizing geometrical parameters, a super absorption is triggered in the range of 0.2–3.25 µm with the absorption higher than 97.40$$\%$$ % and substantially average absorption over 99$$\%$$ % . In this regard, the proposed structure can gather more than $$99\%$$ 99 % of the full spectrum of solar radiation. Furthermore, the absorption of the designed structure is almost insensitive to the launching angle up to $$50^\circ $$ 50 ∘ for TE polarization, while it has a weak dependence on the incident angle for TM polarization. The proposed structure can be a promising candidate for thermal energy harvesting and solar absorption applications.

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Miniaturized Frequency Selective Rasorber Based on Meander-Lines Loaded Lumped Resistors and a Coupled Resonator Spatial Filter

Cited by 4 publications

References 21 publications

Radar Cross-section Reduction of Planar Absorbers Using Resistive FSS Unit Cells

Radar Cross-section Reduction of Planar Absorbers Using Resistive FSS Unit Cells

Multi-characteristic Integrated Ultra-wideband Frequency Selective Rasorber

Multi-octave metasurface-based refractory superabsorber enhanced by a tapered unit-cell structure

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