Marble Pre-selection Chart to Suppress EMF in S-Band and SAR Reduction Capabilities of Them at 2.45 GHz

Abstract

Both in houses and offices, so many RF devices such as microwave ovens and wireless communication equipment are occupying the environment, and most of them are working in S-band. It is being discussed in the literature that, emitted electromagnetic waves from these devices have negative effects especially both on the elderly and children in the long term. That's why human RF exposure analysis of the radiation caused by the devices and investigation of electromagnetic field suppression techniques using natural materials become inevitable. The dielectric properties of the construction materials such as marbles can be ideal for exploration in the field of biomedical engineering and the construction industry. Specific absorption rate (SAR) is a vital parameter for exposure analysis. This paper investigates the potential usage of marbles to suppress electromagnetic fields in terms of human exposure in S-Band. All in S-band; the first step is to determine and prepare a pre-selection chart for widely used 14 different types of marble and then making an estimation on the specific absorption rate by simulation in human muscle with equivalent tissue properties.

Keywords:

• Complex permittivity measurement
• Dielectric losses
• Electromagnetic field suppression
• Marble (rock material)
• SAR reduction

Additional information

Funding

This study was supported by The Scientific Research Projects Coordination Unit of Akdeniz University [Project ID: FBG-2019-5159], and measurements in this study were carried out at Akdeniz University Industrial and Medical Applications Microwave Application and Research Centre (EMUMAM) granted by State Planning Organization [2007K120530-DPT].

Notes on contributors

Atalay Kocakusak

Atalay Kocakusak received his BSc from Akdeniz University (2014), the MSc from the Akdeniz University (2017), and he is pursuing PhD at Akdeniz University. He has been with Akdeniz University as Research Assistant, since 2017. His research interests include EMC, microwave and antenna measurement. Email: [email protected]

Selcuk Helhel

Selcuk Helhel received his BSc from Hacettepe University (1993), the MSc from the Gebze Technical University (1997), and the PhD from Sakarya University (2005), all in electrical engineering. He was with TUBITAK (1993–1998 and 2010–2014), with Dublin City University (2004), with University of New Mexico (2006). He has been with Akdeniz University, since 2006. His research interests include EMC, EMI, microwave and antenna measurement, radio wave propagation and analog communication systems.