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2017-03-27

An Effective SAR Reduction Technique of a Compact Meander Line Antenna for Wearable Applications

By Shankar Bhattacharjee, Monojit Mitra, and Sekhar Ranjan Bhadra Chaudhuri
Progress In Electromagnetics Research M, Vol. 55, 143-152, 2017
doi:10.2528/PIERM16121501

Abstract

In this paper a symmetrically structured meander line antenna placed around a T-shaped junction with truncated ground planes is proposed for on-body applications. The designed antenna has a percentage bandwidth of 69.04% covering the GSM 1800 band internationally accepted industrial scientific and medical (ISM) 2.4-2.5 GHz band, 4G LTE band 7 (2.5-2.69 GHz). The antenna is compact in nature with a size of 30×40×1.6 mm3. SAR reduction is achieved without the attachment of any auxiliary unit. It is found that the application of designed truncated ground planes around positions of high electric field (E-field) region is an effective solution in reducing Specific Absorption Rate (SAR) significantly through field cancellation technique. In addition maximum temperature elevation due to electromagnetic wave absorption has also been computed. The antenna is simulated over a homogenous human dry skin model as well as head model. The proposed design is fabricated and measured, and it is found to be compatible for real world applications while considering its miniaturization, radiation patterns and SAR limitations.

Citation


Shankar Bhattacharjee, Monojit Mitra, and Sekhar Ranjan Bhadra Chaudhuri, "An Effective SAR Reduction Technique of a Compact Meander Line Antenna for Wearable Applications," Progress In Electromagnetics Research M, Vol. 55, 143-152, 2017.
doi:10.2528/PIERM16121501
http://www.jpier.org/PIERM/pier.php?paper=16121501

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