Ultra-wideband Polarization-insensitive Thin Microwave Absorber Composed of Triple-layer Resistive Surfaces

Fang, Yixian; Hu, Zhirun

doi:10.23919/eucap48036.2020.9135705

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…Both simulation and measurement results indicate that the absorption frequency band covers X band (8 -12 GHz) and K u band (12)(13)(14)(15)(16)(17)(18). Meanwhile, unlike other reported AMC based absorbers, the absorber in this work is much less sensitive to incident angles and performs well under various incident angles for both TE and TM waves.…”

Section: Discussionmentioning

confidence: 79%

“…Artificial magnetic conductor (AMC) [1] has been widely applied in microwave metamaterial radar absorber designs [2]- [16] to provide high effective absorption and broad bandwidth. A microwave radar absorber based on a combination of AMC and perfect electric conductor (PEC) in a chessboard configuration was proposed in [17].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we present a fully screen printed graphene AMC based radar absorber working at X band (8)(9)(10)(11)(12) and K u band (12)(13)(14)(15)(16)(17)(18). Whereas all AMC patterns have exactly the same shape and size, the desired anti-phase reflection cancellation is achieved by controlling the sheet resistance of the printed graphene AMC patterns.…”

Section: Introductionmentioning

confidence: 99%

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Controlling Graphene Sheet Resistance for Broadband Printable and Flexible Artificial Magnetic Conductor-Based Microwave Radar Absorber Applications

Fang¹,

Pan

Leng

et al. 2021

IEEE Trans. Antennas Propagat.

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Current artificial magnetic conductor (AMC) designs use metallic patterns on rigid substrates and focus on shapes and sizes of AMC structures, rather than on material performance, which has hindered operation bandwidth and design flexibility. Here, we introduce printed graphene AMCbased broadband and flexible microwave radar absorbers, which not only redirect but also absorb the incident wave so to broaden the operation bandwidth. Contrasting to other reported works, the phase characteristics of the AMCs are realized through the control of the surface resistance provided by printed graphene laminates. We produced a variety of AMC structures, composed of printed graphene circular ring arrays with exactly the same shape and size, but different sheet resistances. By carefully designing the sheet resistance of printed graphene laminates, the optimized anti-phase reflection cancellation between AMCs can be achieved. With printed graphene AMCs and flexible dielectric substrate, the absorber presented in this work has a broadband effective absorption (above 90% absorptivity) from 7.58 GHz to 18 GHz, is polarization insensitive under normal incident and can work at relatively wide incident angles. Furthermore, this absorber is capable of bending easily with notable performance, which makes it ideal for applications with irregular and uneven shapes.

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Section: Discussionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Controlling Graphene Sheet Resistance for Broadband Printable and Flexible Artificial Magnetic Conductor-Based Microwave Radar Absorber Applications

Fang¹,

Pan

Leng

et al. 2021

IEEE Trans. Antennas Propagat.

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“…The WAIM layer and dielectric substrate are modelled as transmission lines. According to the transmission line theory and the calculation method used in [43,44] the input impedance can be represented as…”

Section: Effects Of Embedded Fe 3 O 4 Nanoparticles On Absorptionmentioning

confidence: 99%

A direct laser-synthesized magnetic metamaterial for low-frequency wideband passive microwave absorption

Huang

Pan

et al. 2023

Int. J. Extrem. Manuf.

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Microwave absorbion for radar stealth technology is facing challenges for effectiveness in the low frequency region. Here we report a new laser-based method to produce an ultra-wideband metamaterial based microwave absorber with a high sheet resistance uniformity and negative magnetic permeability leading to the highest relative bandwidth and lowest thickness in the L to S band reported so far. Control of electrical sheet resistance uniformity has been achieved to less than 5% deviation for 400 Ω/sq and 6% deviation for 120 Ω/sq, leading to a microwave absorption coefficient between 97.2%-97.7% within 1.56 GHz-18.3GHz bandwidth for incident angles of 0-40, and there is no need for applying energy or an electrical power source during operation. Porous N- and S- doped turbostratic graphene 2D patterns with imbedded magnetic nanoparticles are produced on polyethylene terephthalate simultaneously during laser direct writing. The proposed low frequency, wide band, wide incident angle and high electromagnetic absorption microwave absorber would have the potential for aviation, EMI suppression and 5G applications.

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Simplified Biasing AFSS Microwave Absorber

Farooq,

Jha,

Sharma

2024

2024 IEEE Wireless Antenna and Microwave Symposium (WAMS)

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Ultra-wideband Polarization-insensitive Thin Microwave Absorber Composed of Triple-layer Resistive Surfaces

Cited by 4 publications

References 10 publications

Controlling Graphene Sheet Resistance for Broadband Printable and Flexible Artificial Magnetic Conductor-Based Microwave Radar Absorber Applications

Controlling Graphene Sheet Resistance for Broadband Printable and Flexible Artificial Magnetic Conductor-Based Microwave Radar Absorber Applications

A direct laser-synthesized magnetic metamaterial for low-frequency wideband passive microwave absorption

Simplified Biasing AFSS Microwave Absorber

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