Shielding Effectiveness of Rice Husk and CNT Composites in X-Band Frequency
This paper presents the electromagnetic interference
(EMI) shielding effectiveness of rice husk and carbon nanotubes
(RHCNTs) composites in the X-band region (8.2-12.4 GHz). The
difference weight ratio of carbon nanotubes (CNTs) were mix with
the rice husk. The rectangular waveguide technique was used to
measure the complex permittivity of the RHCNTs composites
materials. The complex permittivity is represented in terms of both
the real and imaginary parts of permittivity in X-band frequency. The
conductivity of RHCNTs shows increasing when the ratio of CNTs
mixture increases. The composites materials were simulated using
Computer Simulation Technology (CST) Microwave Studio
simulation software. The shielding effectiveness of RHCNTs and
pure rice husk was compared. The highest EMI SE of 30 dB is
obtained for RHCNTs composites of 10 wt % CNTs with 10mm
thickness.
[1] L. Yu, et al., "The microwave absorbing properties of SmCo attached
single wall carbon nanotube/epoxy composites," Journal of Alloys and
Compounds, vol. 575, pp. 123-127, 2013.
[2] T. H. Ting, et al., "Optimisation of the electromagnetic matching of
manganese dioxide/multi-wall carbon nanotube composites as dielectric
microwave-absorbing materials," Journal of Magnetism and Magnetic
Materials, vol. 339, pp. 100-105, 2013.
[3] E. Chojnacki, et al., "Microwave absorption properties of carbon
nanotubes dispersed in alumina ceramic," Nuclear Instruments and
Methods in Physics Research Section A: Accelerators, Spectrometers,
Detectors and Associated Equipment, vol. 659, pp. 49-54, 2011.
[4] P. S. a. D. Ba, "Epsimu, a tool for dielectric properties measurement of
porous media: application in wet granular materials characterization,"
Progress In Electromagnetics Research B, vol. Vol. 29, 191-207, 2011.
[5] M. N. Iqbal, et al., "A Study of the Anechoic Performance of Rice Husk-
Based, Geometrically Tapered, Hollow Absorbers," International
Journal of Antennas and Propagation, vol. 2014, 2014.
[6] M. F. B. A. M. Y. S. Lee, E. M. Cheng, W. W. Liu, K. Y. You, M. N.
Iqbal, F. H. Wee, S. F. Khor, L. Zahid, and M. F. b. Haji Abd Malek,
"Experimental determination of the performance of rice husk-carbon
nanotube composites for absorbing microwave signals in the frequency
range of 12.4-18 GHz," Progress In Electromagnetics Research, vol.
Vol. 140, 795-812, 2013.
[7] M. F. B. A. M. E. M. Cheng, M. Ahmed, K. Y. You, K. Y. Lee, and H.
Nornikman, , "The use of dielectric mixture equations to analyze the
dielectric properties of a mixture of rubber tire dust and rice husks in a
microwave absorber " Progress In Electromagnetics Research, vol. Vol.
129, pp. 559-578, 2012.
[8] Agilent_Technical_Overview, "Agilent Technical Overview. Agilent
85071E Materials Measurement Software, ," Agilent literature number
5988-9472EN., 2012.
[9] Y. Lee, et al., "An experimental thickness of microwave absorber effect
absorption in Ku-band frequency," in Wireless Technology and
Applications (ISWTA), 2013 IEEE Symposium on, 2013, pp. 172-175.
[10] D. Micheli, et al., "Optimization of multilayer shields made of
composite nanostructured materials," Electromagnetic Compatibility,
IEEE Transactions on, vol. 54, pp. 60-69, 2012.
[11] Z. Liu, et al., "Reflection and absorption contributions to the
electromagnetic interference shielding of single-walled carbon
nanotube/polyurethane composites," Carbon, vol. 45, pp. 821-827, 2007.
[12] F. A. M. Z. Z. Awang, N. H. Baba, A. S. Zoolfakar, and R. A. Bakar, "A
free-space method for complex permittivity measurement of bulk and
thin film dielectrics at microwave frequencies," Progress In
Electromagnetics Research B, vol. Vol. 51, 307-328, 2013.
[13] P. Jayasree, et al., "Analysis of shielding effectiveness of single, double
and laminated shields for oblique incidence of EM waves," Progress In
Electromagnetics Research B, vol. 22, pp. 187-202, 2010.
[1] L. Yu, et al., "The microwave absorbing properties of SmCo attached
single wall carbon nanotube/epoxy composites," Journal of Alloys and
Compounds, vol. 575, pp. 123-127, 2013.
[2] T. H. Ting, et al., "Optimisation of the electromagnetic matching of
manganese dioxide/multi-wall carbon nanotube composites as dielectric
microwave-absorbing materials," Journal of Magnetism and Magnetic
Materials, vol. 339, pp. 100-105, 2013.
[3] E. Chojnacki, et al., "Microwave absorption properties of carbon
nanotubes dispersed in alumina ceramic," Nuclear Instruments and
Methods in Physics Research Section A: Accelerators, Spectrometers,
Detectors and Associated Equipment, vol. 659, pp. 49-54, 2011.
[4] P. S. a. D. Ba, "Epsimu, a tool for dielectric properties measurement of
porous media: application in wet granular materials characterization,"
Progress In Electromagnetics Research B, vol. Vol. 29, 191-207, 2011.
[5] M. N. Iqbal, et al., "A Study of the Anechoic Performance of Rice Husk-
Based, Geometrically Tapered, Hollow Absorbers," International
Journal of Antennas and Propagation, vol. 2014, 2014.
[6] M. F. B. A. M. Y. S. Lee, E. M. Cheng, W. W. Liu, K. Y. You, M. N.
Iqbal, F. H. Wee, S. F. Khor, L. Zahid, and M. F. b. Haji Abd Malek,
"Experimental determination of the performance of rice husk-carbon
nanotube composites for absorbing microwave signals in the frequency
range of 12.4-18 GHz," Progress In Electromagnetics Research, vol.
Vol. 140, 795-812, 2013.
[7] M. F. B. A. M. E. M. Cheng, M. Ahmed, K. Y. You, K. Y. Lee, and H.
Nornikman, , "The use of dielectric mixture equations to analyze the
dielectric properties of a mixture of rubber tire dust and rice husks in a
microwave absorber " Progress In Electromagnetics Research, vol. Vol.
129, pp. 559-578, 2012.
[8] Agilent_Technical_Overview, "Agilent Technical Overview. Agilent
85071E Materials Measurement Software, ," Agilent literature number
5988-9472EN., 2012.
[9] Y. Lee, et al., "An experimental thickness of microwave absorber effect
absorption in Ku-band frequency," in Wireless Technology and
Applications (ISWTA), 2013 IEEE Symposium on, 2013, pp. 172-175.
[10] D. Micheli, et al., "Optimization of multilayer shields made of
composite nanostructured materials," Electromagnetic Compatibility,
IEEE Transactions on, vol. 54, pp. 60-69, 2012.
[11] Z. Liu, et al., "Reflection and absorption contributions to the
electromagnetic interference shielding of single-walled carbon
nanotube/polyurethane composites," Carbon, vol. 45, pp. 821-827, 2007.
[12] F. A. M. Z. Z. Awang, N. H. Baba, A. S. Zoolfakar, and R. A. Bakar, "A
free-space method for complex permittivity measurement of bulk and
thin film dielectrics at microwave frequencies," Progress In
Electromagnetics Research B, vol. Vol. 51, 307-328, 2013.
[13] P. Jayasree, et al., "Analysis of shielding effectiveness of single, double
and laminated shields for oblique incidence of EM waves," Progress In
Electromagnetics Research B, vol. 22, pp. 187-202, 2010.
@article{"International Journal of Electrical, Electronic and Communication Sciences:68434", author = "Y. S. Lee and F. Malek and E. M. Cheng and W. W. Liu and F. H. Wee and M. N. Iqbal and Z. Liyana and B. S. Yew and F. S. Abdullah", title = "Shielding Effectiveness of Rice Husk and CNT Composites in X-Band Frequency", abstract = "This paper presents the electromagnetic interference
(EMI) shielding effectiveness of rice husk and carbon nanotubes
(RHCNTs) composites in the X-band region (8.2-12.4 GHz). The
difference weight ratio of carbon nanotubes (CNTs) were mix with
the rice husk. The rectangular waveguide technique was used to
measure the complex permittivity of the RHCNTs composites
materials. The complex permittivity is represented in terms of both
the real and imaginary parts of permittivity in X-band frequency. The
conductivity of RHCNTs shows increasing when the ratio of CNTs
mixture increases. The composites materials were simulated using
Computer Simulation Technology (CST) Microwave Studio
simulation software. The shielding effectiveness of RHCNTs and
pure rice husk was compared. The highest EMI SE of 30 dB is
obtained for RHCNTs composites of 10 wt % CNTs with 10mm
thickness.
", keywords = "EMI Shielding effectiveness, Carbon nanotube,
Composite materials, Waveguide, X-band.", volume = "8", number = "12", pages = "1857-4", }
