Specific Absorption Rate for Agri-Food Materials from Multiple Antenna Exposure
Keywords:
Agri-food, coconut, multiple antennas, SAR, RF exposureAbstract
This paper presents an evaluation of the Specific Absorption Rate (SAR) in agri-food when it is exposed to wireless communication devices with multiple transmitting antennas. In particular, we model a simplified coconut which is exposed to antennas working at the frequency of 2.45 GHz. Two antenna configurations are being considered. One is a single dipole antenna, and the other is two co-polarized dipole antenna array. As a result, we observed that the SAR of the coconut for single antenna case is relatively smaller than that for multiple antenna one.
Downloads
References
IEEE 1528 Standard, “IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques,” ed. 2013.
IEC 62209-1 Standard, “Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices - Human models, instrumentation, and procedures - Part 1,” Mar. 2010.
ICNIRP, “Guidelines for limiting exposure to timevarying electric, magnetic and electromagnetic fields (up to 300 GHz),” Health Phys., vol. 74, pp. 494-522, 1998.
A. Kundu, B. Gupta, and S. Ray, “A study of specific absorption rate in coconut exposed to RF radiation,” Microwave Review, vol. 20, no. 1, Sep. 2014. [available online: http://www.mtt-serbia.org.rs/ microwave_review/pdf/Vol20No1%20-%2002% 20-%20AKundu.pdf].
D. T. Le, L. Hamada, S. Watanabe, and T. Onishi, “Measurement procedure to determine SAR of multiple antenna transmitters using scalar electric field probes,” in Proc. of the IEEE Conference on Advanced Technologies for Communications ATC2014, Hanoi, Vietnam, Oct. 2014.
CST Microwave Studio, Computer Simulation Technology, [online: https://www.cst.com].
