Broadband patterned magnetic microwave absorber

Li, Wei; Wu, Tianlong; Wang, Wei; Guan, Jianguo; Zhai, Pengcheng

doi:10.1063/1.4891475

Title: Broadband patterned magnetic microwave absorber

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Abstract

It is a tough task to greatly improve the working bandwidth for the traditional flat microwave absorbers because of the restriction of available material parameters. In this work, a simple patterning method is proposed to drastically broaden the absorption bandwidth of a conventional magnetic absorber. As a demonstration, an ultra-broadband microwave absorber with more than 90% absorption in the frequency range of 4–40 GHz is designed and experimentally realized, which has a thin thickness of 3.7 mm and a light weight equivalent to a 2-mm-thick flat absorber. In such a patterned absorber, the broadband strong absorption is mainly originated from the simultaneous incorporation of multiple λ/4 resonances and edge diffraction effects. This work provides a facile route to greatly extend the microwave absorption bandwidth for the currently available absorbing materials.

Authors:

Li, Wei; Wu, Tianlong; Wang, Wei; Guan, Jianguo ^[1]; Zhai, Pengcheng ^[2]

State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)
School of Science, Wuhan University of Technology, Wuhan 430070 (China)

Publication Date:: Mon Jul 28 00:00:00 EDT 2014

OSTI Identifier:: 22308548

Resource Type:: Journal Article

Journal Name:: Journal of Applied Physics

Additional Journal Information:: Journal Volume: 116; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; DIFFRACTION; GHZ RANGE; MAGNETIC PROPERTIES; MICROWAVE RADIATION; RESONANCE; THICKNESS

Citation Formats


                    Li, Wei, Wu, Tianlong, Wang, Wei, Guan, Jianguo, and Zhai, Pengcheng. Broadband patterned magnetic microwave absorber.  United States: N. p., 2014. 
        Web.  doi:10.1063/1.4891475.

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                    Li, Wei, Wu, Tianlong, Wang, Wei, Guan, Jianguo, & Zhai, Pengcheng. Broadband patterned magnetic microwave absorber.  United States.  https://doi.org/10.1063/1.4891475

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                    Li, Wei, Wu, Tianlong, Wang, Wei, Guan, Jianguo, and Zhai, Pengcheng. 2014.  
        "Broadband patterned magnetic microwave absorber".  United States.  https://doi.org/10.1063/1.4891475.

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@article{osti_22308548,

  title        = {Broadband patterned magnetic microwave absorber},

  author       = {Li, Wei and Wu, Tianlong and Wang, Wei and Guan, Jianguo and Zhai, Pengcheng},

  abstractNote = {It is a tough task to greatly improve the working bandwidth for the traditional flat microwave absorbers because of the restriction of available material parameters. In this work, a simple patterning method is proposed to drastically broaden the absorption bandwidth of a conventional magnetic absorber. As a demonstration, an ultra-broadband microwave absorber with more than 90% absorption in the frequency range of 4–40 GHz is designed and experimentally realized, which has a thin thickness of 3.7 mm and a light weight equivalent to a 2-mm-thick flat absorber. In such a patterned absorber, the broadband strong absorption is mainly originated from the simultaneous incorporation of multiple λ/4 resonances and edge diffraction effects. This work provides a facile route to greatly extend the microwave absorption bandwidth for the currently available absorbing materials.},

  doi          = {10.1063/1.4891475},

  url          = {https://www.osti.gov/biblio/22308548},
  journal      = {Journal of Applied Physics},

  issn         = {0021-8979},

  number       = 4,

  volume       = 116,

  place        = {United States},

  year         = {Mon Jul 28 00:00:00 EDT 2014},

  month        = {Mon Jul 28 00:00:00 EDT 2014}

}

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