Ấn phẩm:
xpanding the absorption bandwidth with two-layer graphene metamaterials in gigahertz frequency range
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Tóm tắt
This work investigates the design and performance of a bilayer graphene metamaterial absorber operating in the GHz region. We initially analyzed a single-layer metamaterial absorber composed of a conductive ink graphene structure on a FR-4 dielectric substrate backed by a continuous copper sheet. Subsequently, a second graphene-FR4 layer of identical dimensions was added to create a bilayer structure. While the number of absorption peaks increased, they remained isolated, failing to achieve the desired broadband effect. To overcome this limitation, we explored graphene layers with varying surface resistances. Our fidings demonstrate that the bilayer graphene metamaterial absorber achieves an absorption exceeding 90% with a remarkable bandwidth of 9.1 GHz, spanning frequencies from 6.21 GHz to 15.31 GHz. This significant bandwidth expansion is attributed to the synergistic interactions and contributions between the graphene and metal layers within the structure.
Mô tả
Communications in Physics, Vol. 34, No. 4
Tác giả
Ngo, Nhu Viet
Pham, Thanh Son
Do, Khanh Tung
Nguyen, Hai Anh
Do, Thuy Chi
Nguyen, Phon Hai
Bui, Son Tung
Bui, Xuan Khuyen
Vu, Dinh Lam
Người hướng dẫn
Nơi xuất bản
Nhà xuất bản
Viện Vật lý, Viện Hàn lâm Khoa học và Công nghệ Việt Nam
Năm xuất bản
2024-10
ISSN tạp chí
Nhan đề tập
Từ khóa chủ đề
Multilayer , Metamaterial absorber , Graphene conductive ink
URI
Tài liệu tham khảo
Thông tin bản quyền
Tệp tin
Ngo Nhu Viet; Vu Dinh Lam, Bui Son Tung; Bui Xuan Khuyen, Pham Thanh Son, Nguyen Hai Anh, Nguyen Phon Hai, Do Khanh Tung, Do Thuy Chi.pdf
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