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PIER PIER B PIER C PIER M PIER Letters
2013-03-28
Effects of Electromagnetic Absorption Towards Human Head Due to Variation of Its Dielectric Properties at 900, 1800 and 1900 MHz with Different Antenna Substrates
By
Nur Aisyah Husni,

    Ms. Nur Aisyah Husni

    Dept. of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment

    Universiti Kebangsaan Malaysia

    Malaysia

    Homepage

Mohammad Tariqul Islam,

    Prof. Mohammad Tariqul Islam

    Universiti Kebangsaan Malaysia

    Malaysia

    Homepage

Mohammad Rashed Iqbal Faruque,

    Dr. Mohammad Rashed Iqbal Faruque

    Faculty of Engineering and Built Environment

    Universiti Kebangsaan Malaysia

    Malaysia

    Homepage

Norbahiah Misran

    Dr. Norbahiah Misran

    Department of Electrical, Electronic and Systems Engineering

    Universiti Kebangsaan Malaysia

    Malaysia

    Homepage

Progress In Electromagnetics Research, Vol. 138, 367-388, 2013
doi:10.2528/PIER13021908
Abstract
This paper analyzes and discusses the effect of the electromagnetic absorption by human head against variation of head dielectric properties at 900, 1800 and 1900 MHz. The characteristics of helical antenna and its substrates with variation in human head dielectric properties are simulated by implementing finite-difference time-domain (FDTD) method using CST Microwave studio. The variations in human head dielectric properties were manipulated by increasing and decreasing 10% and 20% of each of the human head dielectric properties. In this paper, SAR values increase with increment of head conductivity, and increment of head permittivity and head density lead to decrement of SAR values. Helical antenna with substrate of FR4 results in higher SAR values in all frequency exposures. The head SAR values are higher with higher frequency exposures. The helical antenna with substrate of Rogers RO3006 (loss free) is found to be better over FR4 and Rogers RO4003 (loss free), which contributes towards much lower SAR values in all GSM frequency bands exposure.
Citation
Nur Aisyah Husni, Mohammad Tariqul Islam, Mohammad Rashed Iqbal Faruque, and Norbahiah Misran, "Effects of Electromagnetic Absorption Towards Human Head Due to Variation of Its Dielectric Properties at 900, 1800 and 1900 MHz with Different Antenna Substrates," Progress In Electromagnetics Research, Vol. 138, 367-388, 2013.
doi:10.2528/PIER13021908
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