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Title: Ultrathin perfect absorber based on integrated metamaterial
Authors: Tran, Tien Lam
Dinh, Thi Nga
Dinh, Van Thien
Nguyen, Sy Khiem
Bui, Xuan Khuyen
Bui, Son Tung
Vu, Dinh Lam
Keywords: Metamaterials
Perfect absorption
Low frequency
Issue Date: 2020
Series/Report no.: Vietnam Journal of Science and Technology;Vol. 58, No. 05 .- P.571-577
Abstract: We improved common metamaterial perfect absorber (MPA) by integrating four embedded inductors or replacing four embedded capacitors in the same compact structure. The obtained results confirmed that the lumped-capacitors MPA maintain an extreme thickness t = λ/940, where λ is operating wavelength at 106.3 MHz. Besides, by replacing these capacitors by inductors in the initial designed-MPA structure, we obtained an effective thickness of t = λ/53 at 1.9 GHz. Furthermore, we explained the absorption mechanism in terms of the magnetic energy and power loss distributions related to the impedance-matching effect.
ISSN: 2525-2518
Appears in Collections:Vietnam journal of science and technology

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