IMPROVEMENT OF ELECTROMAGNETIC SHIELDING EFFECTIVENESS FOR RADAR FREQUENCIES (X-BAND) USING DISPERSION FACTOR

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ZAROUSHANI VIDA; KHAVANIN ALI; MORTAZAVI SEYED BAGHER; JNONIDI AHMAD

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Journal: Iran Occupational Health Year:2016 | Volume:13 | Issue:1 Page(s): 1-10

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Title

IMPROVEMENT OF ELECTROMAGNETIC SHIELDING EFFECTIVENESS FOR RADAR FREQUENCIES (X-BAND) USING DISPERSION FACTOR

Author(s)

ZAROUSHANI VIDA | KHAVANIN ALI | MORTAZAVI SEYED BAGHER | JNONIDI AHMAD | Issue Writer Certificate

Keywords

ELECTROMAGNETIC SHIELDINGQ2

MICROWAVEQ2

NANOCOMPOSITEQ2

NICKEL OXIDEQ2

ELECTROMAGNETIC RADIATIONQ2

DISPERSIONQ2

Abstract

Background and aims: X-band with 8-12.5 frequencies range has various applications such as air control traffic, navy communication etc. Uncontrolled exposure with MICROWAVE can lead to adverse effect on workers. Currently, application of the shielding is a superior control for prevention of MICROWAVE exposure. This study investigated the effect of DISPERSION on shielding effectiveness improvement about a novel nanocomposit shiled.Methods: NANOCOMPOSITEs prepared by epoxy resin and nano NICKEL OXIDE (7wt%) with 2, 4 and 6 mm thicknesses. In order to investigate the effect of DISPERSION, 10 and 66 minutes was considered as mixing time. Nanoparticles characterized by X-ray Diffraction and Field Emission Scanning Electron Microscope. Shielding effectiveness measured with vector network analyzer.Results: DISPERSION of nanoparticles in group 2-nanocomposites was better than group 1- NANOCOMPOSITEs. Average of percentage attenuation in group 2-nanocomposites was better than group 1- NANOCOMPOSITEs. The Average of shielding effectiveness for three thicknesses in group 1 was 46.5, 69.03, 70.83 and for group 2 was 52.02%, 78.48% and 84.14%dB, respectively. Maximum attenuation obtained by the 6mm thickness in group 2- NANOCOMPOSITEs at 8.8 GHz frequency (91.12%). The Average of shielding effectiveness increased with increasing the thickness.Conclusion: With increasing the mixing time, the DISPERSION and shielding effectiveness be improved. These NANOCOMPOSITEs could be used as appropriate shielding for exposure control of X-band frequency in workplace and NANOCOMPOSITE with 4mm thickness is appropriate shield in this study. Both 4mm and 6mm thicknesses in group 2 are useful in specific frequency such as 8.8 and 12.5 GHz.the average of percentage attenuation for above thicknesses is more than 87%.

Cites

INVESTIGATION ON THE EFFECT OF STRUCTURAL FACTORS ON SHIELDING EFFECTIVENESS IN DOUBLE-LAYER ELECTROMAGNETIC SHIELDS

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APA: Copy

ZAROUSHANI, VIDA, KHAVANIN, ALI, MORTAZAVI, SEYED BAGHER, & JNONIDI, AHMAD. (2016). IMPROVEMENT OF ELECTROMAGNETIC SHIELDING EFFECTIVENESS FOR RADAR FREQUENCIES (X-BAND) USING DISPERSION FACTOR. IRAN OCCUPATIONAL HEALTH JOURNAL, 13(1), 1-10. SID. https://sid.ir/paper/129222/en

Vancouver: Copy

ZAROUSHANI VIDA, KHAVANIN ALI, MORTAZAVI SEYED BAGHER, JNONIDI AHMAD. IMPROVEMENT OF ELECTROMAGNETIC SHIELDING EFFECTIVENESS FOR RADAR FREQUENCIES (X-BAND) USING DISPERSION FACTOR. IRAN OCCUPATIONAL HEALTH JOURNAL[Internet]. 2016;13(1):1-10. Available from: https://sid.ir/paper/129222/en

IEEE: Copy

VIDA ZAROUSHANI, ALI KHAVANIN, SEYED BAGHER MORTAZAVI, and AHMAD JNONIDI, “IMPROVEMENT OF ELECTROMAGNETIC SHIELDING EFFECTIVENESS FOR RADAR FREQUENCIES (X-BAND) USING DISPERSION FACTOR,” IRAN OCCUPATIONAL HEALTH JOURNAL, vol. 13, no. 1, pp. 1–10, 2016, [Online]. Available: https://sid.ir/paper/129222/en

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