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EMC microwave absorber for outdoor applications

Published online by Cambridge University Press:  22 February 2018

Roman Kubacki ,
Wojciech Głuszewski ,
Dariusz Laskowski ,
Karol Rudyk  and
Marek Kuchta
Roman Kubacki*
Affiliation:
Faculty of Electronics, Military University of Technology, Warsaw, Poland
Wojciech Głuszewski
Affiliation:
Institute of Nuclear Chemistry and Technology, Warsaw, Poland
Dariusz Laskowski
Affiliation:
Faculty of Electronics, Military University of Technology, Warsaw, Poland
Karol Rudyk
Affiliation:
Faculty of Electronics, Military University of Technology, Warsaw, Poland
Marek Kuchta
Affiliation:
Faculty of Electronics, Military University of Technology, Warsaw, Poland
*
Author for correspondence: Roman Kubacki, E-mail: [email protected]
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Abstract

In some circumstances, electromagnetic compatibility testing must be performed not in a specialized anechoic chamber, but in an open space. However, typical absorbers used in anechoic chambers to absorb incident radiation and to reduce the amount of rays reflected from the walls and the floor, such as ferrite tiles and graphite cones, are not suitable in an open space. In this work, we present the design and a test for the absorbing material, which can successfully be used in a tent or in a similar light and portable structure. The proposed composite material is flexible, has good absorbing and mechanical properties as well as low reflectivity. As an absorber, the nanocrystalline iron alloy with graphite, mixed with an elastomer was proposed. This material was additionally exposed to the ionizing radiation in the dose of 100 kGy in the radioactive gamma source (60Co). The permittivity, permeability, and the shielding properties of the material have been analyzed as well.

Keywords

EMCFerriteMicrowave absorberRadiation modified elastomerShielding
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Special Issue 7: Electronic Warfare , September 2018 , pp. 754 - 758
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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References

[1]Nowosielski, L and Łopatka, J (2014) Measurement of shielding effectiveness with the method using high power electromagnetic pulse generator, Progress in Electromagnetics Research Symposium, pp. 2687–2691.Google Scholar
[2]Nowosielski, L, Przesmycki, R, Wnuk, M and Rychlica, J (2011) The Methods of Measuring Attenuation of Thin Absorbent Materials Used for Electromagnetic Shielding, PIERS Marrakesh Morocco, pp. 870–874.Google Scholar
[3]Kubacki, R, Ferenc, J, Przesmycki, R and Wnuk, M (2012) The Nanocrystalline FeSiBCuNb Finemet absorption properties at microwaves. IEEE Transactions on EMC 54(1), 93–100.Google Scholar
[4]Yoshizawa, Y, Oguma, S and Yamauchi, K (1988) New Fe-based soft magnetic alloys composed of ultrafine grain structure. Journal of Applied Physics 64(10), 6044–6046.Google Scholar
[5]Głuszewski, W, Zagórski, ZP and Rajkiewicz, M (2015) The Comparison of Radiation and a Peroxide Crosslinking of Elastomers. KGK und PV 11/12, 46–49.Google Scholar
[6]Głuszewski, W, Zagórski, ZP and Rajkiewicz, M (2014) Protective Effects in Radiation Modification of Elastomers. Radiation Physics and Chemistry 105, 53–56.Google Scholar
[7]Baker-Jarvis, J, Janezic, MD, Riddle, BF, Johnj, RT, Kabos, P, Holloway, C and Grosvenor, CA (2005) Measuring the permittivity and permeability of lossy materials: solids, liquids, metals, building materials and negative-index materials, Natl. Inst. Stand. Technol., Technical Note, NIST.Google Scholar
[8]Nicolson, AM and Ross, GF (1968) Measurement of the intrinsic properties of materials by time domain techniques. IEEE Transactions on Instrumentation and Measurement 19, 377–382.Google Scholar
[9]Weir, WB (1974) Automatic measurement of complex dielectric constant and permeability at microwave frequencies. Proceedings of the IEEE 62, 33–36.Google Scholar
[10]Kubacki, R (2015) The reflectivity of the Ni-Zn ferrite tiles in the microwave frequency range, PIERS 2015 Conference Proceedings, Prague, the Czech Republic, pp. 710–714.Google Scholar
[11]Zhang, X and Sun, W (2010) Microwave absorbing properties of double-layer cementitious composites containing Mn–Zn ferrite. Cement & Concrete Composites 32, 726–730.Google Scholar