Tunable Microwave Absorber Based on Patterned Graphene

Yi, Da; Wei, Xiaoting; Xu, Yi-Li

doi:10.1109/tmtt.2017.2678501

Cited by 122 publications

(44 citation statements)

References 27 publications

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“…2c could be used as a tunable microwave absorber as the surface resistance of graphene varies with DC voltage or doping concentration. 68 The impedance of the graphene-based metasurface can be varied by an external electric field which in turn controls resonant frequency. 68…”

Section: Microwave Absorbersmentioning

confidence: 99%

See 1 more Smart Citation

Applications of Microwave Materials: A Review

Raveendran

Sebastian

Raman

2019

Journal of Elec Materi

147

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The performance of microwave devices mainly depends on the properties of materials used in the fabrication. Knowledge of material properties at microwave frequencies is a prerequisite to select suitable materials for various microwave applications and vice versa. In this review, seven categories of materials and their applications in a microwave regime are elaborately discussed. The categories include magnetic materials, carbon-based materials, flexible or stretchable materials, biomaterials, phantoms, tunable materials and metamaterials. A brief overview of other important microwave materials such as low-loss ceramic dielectric materials, low-loss polymer ceramic composites, glass ceramics and multilayer ceramics is also given. The objective of this review is to expose the world of materials for wide microwave applications and thereby properly assisting the material selection for specific applications. Moreover, this review has dual significance. It helps material scientists to develop new materials and modify the properties of the available materials with respect to the application requirements. It also assists microwave engineers to select and use appropriate materials for different microwave applications.

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Section: Microwave Absorbersmentioning

confidence: 99%

“…68 The impedance of the graphene-based metasurface can be varied by an external electric field which in turn controls resonant frequency. 68…”

Section: Microwave Absorbersmentioning

confidence: 99%

Applications of Microwave Materials: A Review

Raveendran

Sebastian

Raman

2019

Journal of Elec Materi

147

View full text Add to dashboard Cite

show abstract

“…In 2017, the research group of Wei et al proposed two kinds of absorbers to predict the possibility of tunable absorbers [26]. The center frequency of the absorbers can be changed by the different surface impedance of graphene (TSR approach) exhibited in Figure 5a or the different numbers of graphene layers (SGM approach) exhibited in Figure 5c due to their influence on the real part and imaginary part of the input impedance of the structure.…”

Section: Absorbers Based On Cvd-grown Graphenementioning

confidence: 99%

A review of microwave devices based on CVD-grown graphene with experimental demonstration

Chen

Liu

2019

EPJ Appl. Metamat.

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As a two-dimension planar material with zero-gap structure, graphene has a lot of outstanding properties in microwave frequency band, and the chemical vapor deposition (CVD) method can produce the large-scale graphene sheets with high quality for applications. Thus, the study about the microwave devices based on CVD-grown graphene has been aroused wide interests in the past few years. In this paper, mainly concentrating on the research by Chinese scientific groups, we review the development of microwave devices based on the CVD-grown graphene which are all validated by experiments, including attenuators, absorbers, antennas, electromagnetic interference (EMI) shielding and beam reconfiguration.

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“…The absorbers reported in References are tunable in nature in addition with having optical transparency and flexibility. In Reference , authors had proposed optically transparent tunable absorber using patterned graphene. The authors have focused on tunability of center frequency which is in gigahertz range.…”

Section: Introductionmentioning

confidence: 99%

An optically transparent and flexible microwave absorber for X and Ku bands application

Tayde

Chaudhary

Singh

et al. 2020

Micro & Optical Tech Letters

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In this article, an optically transparent and flexible microwave absorber for X and Ku bands application has been presented. The proposed absorber uses optically transparent ITO coated PET sheet for creating ohmic loss and polydimethylsiloxane has been used as a dielectric substrate for optical transparency and flexibility. The novelty of the structure lies in its optical transparency and flexible with increased absorption bandwidth and minimum thickness in comparison to previously reported state of the art absorbers. The proposed absorber exhibits absorptivity (above 90%) in the frequency range from 8.00 to 20.70 GHz under normal incidence. The thickness of the absorber is 0.196λg (where λg correspond to guided wavelength with respect to dielectric constant εr). An equivalent circuit model has been proposed which shows good match with the full wave model.

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Tunable Microwave Absorber Based on Patterned Graphene

Cited by 122 publications

References 27 publications

Applications of Microwave Materials: A Review

Applications of Microwave Materials: A Review

A review of microwave devices based on CVD-grown graphene with experimental demonstration

An optically transparent and flexible microwave absorber for X and Ku bands application

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