• DocumentCode
    1345714
  • Title

    Effect of FeCoB-SiO _2 -Film-Based Fractal Frequency Selective Surface on the Absorption Properties of Microwave Absorbers

  • Author

    Zhangqi Liao ; Yan Nie ; Wenyi Ren ; Xian Wang ; Rongzhou Gong

  • Author_Institution
    Dept. of Electron. of Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
  • Volume
    1
  • fYear
    2010
  • fDate
    7/2/1905 12:00:00 AM
  • Firstpage
    5000204
  • Lastpage
    5000204
  • Abstract
    The effects of FeCoB-SiO2 -film-based fractal frequency selective surface (FSS) on the absorption properties of multilayer microwave absorbers (MMA) were investigated in detail. These magnetic films were prepared in argon pressure by radio frequency magnetron sputtering targets of SiO2 and Fe40Co40B20. Laser etching was used to fabricate FSS samples using the prepared magnetic films (SFSS) and comparative nonmagnetic aluminum film (AFSS). The reflection properties of the MMAs were measured in the range 2-18 GHz. The combined samples decreased the reflectivity by 50% and increased the bandwidths under -5 dB by 100% by substituting SFSS for AFSS, with the absorbing peak frequencies almost kept unchanged. The 0.67-mm-thick MMA samples that SFSS and AFSS both used could further enhance the minimum peak vale to -9.84 dB and broaden the bandwidth under -5 dB to 5.36 GHz. As a consequence, magnetic-film-based fractal FSSs are able to strongly improve absorption characteristics in microwave absorbers.
  • Keywords
    electromagnetic wave absorption; etching; frequency selective surfaces; iron compounds; magnetic multilayers; magnetic thin films; microwave materials; silicon compounds; soft magnetic materials; sputter deposition; AFSS; FeCoB-SiO2; MMA samples; SFSS; absorption properties; argon pressure; fractal frequency selective surface; laser etching; magnetic film-based fractal FSS; magnetic films; multilayer microwave absorbers; nonmagnetic aluminum film; radio frequency magnetron sputtering; Absorption; Bandwidth; Frequency selective surfaces; Magnetic multilayers; Metals; Microwave theory and techniques; Soft magnetic materials; FeCoB-SiO$_2$ thin films; Soft magnetic materials; fractal; frequency selective surfaces (FSSs); microwave absorbers;
  • fLanguage
    English
  • Journal_Title
    Magnetics Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1949-307X
  • Type

    jour

  • DOI
    10.1109/LMAG.2010.2076400
  • Filename
    5596233
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1345714