Vol. 78

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2019-01-24

Investigations of Specific Absorption Rate and Temperature Variations for an UWB Antenna for Wireless Applications

By Mohandoss Susila, Thipparaju Rama Rao, Karthik Varshini, Palaniswamy Sandeep Kumar, and Marudappa Pushpalatha
Progress In Electromagnetics Research M, Vol. 78, 83-92, 2019
doi:10.2528/PIERM18111603

Abstract

This paper portrays a compact planar ultra-wideband (UWB) antenna design and development for wireless applications. The proposed antenna is influenced by fractal geometry design, where a pentagon slot is introduced inside a circular metallic patch, and iterations were carried out to achieve needed wide bandwidth. The antenna is deployed over an FR4 substrate with relative permittivity of 4.4 and thickness of 0.16 cm, to achieve wider impedance bandwidth. The proposed antenna is of low profile with dimensions of 32 mm x 32 mm, and it operates over bandwidth of 12.1 GHz (2.9-15 GHz). Specific Absorption Rate (SAR), the measure of exposure of electromagnetic (EM) energy on human tissues, is observed when proposed antenna is placed in close proximity to the dispersive phantom model. Also, the time domain analysis is done on human tissue model to observe the performance of the antenna and to validate its capability with wireless devices which are in near vicinity to the human all the time. Further, in this research, the temperature variation on human tissue is examined using Infrared (IR) thermal camera. Investigation on these parameters and validation with Radio Frequency (RF) equipment helps to prove that the proposed antenna is a suitable candidate for UWB wireless communication applications.

Citation


Mohandoss Susila, Thipparaju Rama Rao, Karthik Varshini, Palaniswamy Sandeep Kumar, and Marudappa Pushpalatha, "Investigations of Specific Absorption Rate and Temperature Variations for an UWB Antenna for Wireless Applications," Progress In Electromagnetics Research M, Vol. 78, 83-92, 2019.
doi:10.2528/PIERM18111603
http://www.jpier.org/PIERM/pier.php?paper=18111603

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