Neural Network Topology-Based Terahertz Absorber Using Fractal Frequency Selective Surface

Chaudhary, Varun; Panwar, Ravi

doi:10.1109/jsen.2021.3112336

Cited by 17 publications

(2 citation statements)

References 41 publications

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“…In recent years, with the improvement of channel capacity and communication quality, single frequency FSSs can no longer meet the requirements of high communication capacity, and the multifrequency design of FSSs has become a popular topic of research. At present, the design of a multiband FSS can be realized by multilayer cascade [18,19], the multiple resonant element method [20], composite technology [21,22], fractal structure [23,24], and other methods. Much work has been performed on the design of multiband FSSs.…”

Section: Introductionmentioning

confidence: 99%

A New Miniaturized Double Stop-band Frequency Selective Surface

Li,

Wang,

Zhang

et al. 2024

ACES Journal

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A miniaturized double stop-band FSS for WLAN was proposed based on the structure of a ring patch with internal branches and a cross zigzag loaded line. This construction is obtained by using the multilayer connection method to paint the two layers of the patch that we designed on the top and bottom of the dielectric substrate to simulate the designed construction by using HFSS simulation. Analyzing the frequency response characteristics of the FSS indicates that the construction can generate two transmission band gaps at 1.92-2.17 GHz and 4.94-5.99 GHz in the WLAN wave. This construction has stronger polarization stability and angle stability when the incident electromagnetic wave is 0-60∘. It also has a simple construction, small size, and significant engineering applicationvalue.

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Section: Introductionmentioning

confidence: 99%

A New Miniaturized Double Stop-band Frequency Selective Surface

Li,

Wang,

Zhang

et al. 2024

ACES Journal

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show abstract

“…So that both single-layer structures and multi-layer structures have been reported, each of which has its own advantages and disadvantages. [14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Design of Novel Multiband Radar Absorbers Using Cylindrical Frequency Selective Surfaces

Fakhte

2022

Acta Marisiensis. Seria Technologica

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In this paper, a novel ultra-thin and multi-band radar absorber structure using cylindrical frequency selective surfaces (FSS) is proposed. The unit cell of the structure consists of a curved square ring printed on a cylindrical dielectric spacer to realize strong resonance to achieve efficient absorption of the incident microwave energy. The use of novel cylindrical FSS coating results in a considerable decrease of the radar cross section of a perfect electric cylinder. Furthermore, our studies prove that the proposed absorbing structure can be easily scaled to desired frequencies, and extension to dual- and multiband performances is possible. Meanwhile, the operational principle of the proposed absorbers is briefly introduced.

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Multifunctional Metamaterial Microwave Blackbody with High‐Frequency Compatibility, Temperature Insensitivity, and Structural Scalability

Zhou

Pan

et al. 2022

Adv Funct Materials

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Compared with optical black, few attempts have focused on achieving broadband microwave blackbodies. In this study, all‐ceramic metamaterial microwave blackbodies are created by integrating a graded Gyroid shellular (GGS) metastructure design with additive manufacturing of polymer‐derived SiOC (PDCs‐SiOC) ceramics encapsulated by Si3N4 (SiOC@Si3N4). Hardly influenced by the destructive interference effect, as‐fabricated GGS‐structured SiOC@Si3N4 microwave blackbodies demonstrate a broadband microwave absorption (MA) above 83.6% (91.3% on average) across the entire X‐Ku band and encompassing higher frequencies above 18 GHz as well, together with the temperature insensitivity from room temperature to 500 °C. Based on the flexible electromagnetic tunability of PDCs‐SiOC, exceptional structural scalability is experimentally validated for metal‐doped modified CuSiOC and CoSiOC substrates with the same GGS metastructures, retaining high‐efficiency MA capability. Furthermore, attachment of perfectly reflecting metal backplanes further enhances the MA performance, with an ultrawide MA exceeding 67.9% (89.1% on average) achievable at 2.95–18 GHz for CoSiOC substrate. Meanwhile, the GGS‐structured SiOC@Si3N4 metamaterials possess additional multifunctional properties, such as good noise reduction performance as well as ultrahigh wear resistance. As a proof of concept, this study provides important guidance on achieving multifunctional coupling broadband MA characteristics by fully tapping the application potential of existing materials.

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Neural Network Topology-Based Terahertz Absorber Using Fractal Frequency Selective Surface

Cited by 17 publications

References 41 publications

A New Miniaturized Double Stop-band Frequency Selective Surface

A New Miniaturized Double Stop-band Frequency Selective Surface

Design of Novel Multiband Radar Absorbers Using Cylindrical Frequency Selective Surfaces

Multifunctional Metamaterial Microwave Blackbody with High‐Frequency Compatibility, Temperature Insensitivity, and Structural Scalability

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