Numerical Study of Maximum Peak Spatial SAR Reduction in a Mobile Phone

The government regulates specific absorption rate (SAR) levels of mobile phones and beyond that limit, mobile phones are not available on the market. The SAR measurement for a specific anthropomorphic mannequin (SAM) phantom is performed for four different positions and all 1-g peak spatial SAR valu...

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Bibliographic Details
Published inJournal of electrical engineering & technology Vol. 15; no. 5; pp. 2211 - 2216
Main Authors Lee, Jisu, Park, Seungyong, Lee, Ae-Kyung, Choi, Hyung-Do, Jung, Kyung-Young
Format Journal Article
LanguageEnglish
Published Singapore Springer Singapore 01.09.2020
대한전기학회
Subjects
Electrical Engineering
Electrical Machines and Networks
Electronics and Microelectronics
Engineering
Instrumentation
Original Article
Power Electronics
전기공학
Mobile phone
Specific absorption rate (SAR)
SAM phantom
Finite-difference time-domain (FDTD) method
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Summary:The government regulates specific absorption rate (SAR) levels of mobile phones and beyond that limit, mobile phones are not available on the market. The SAR measurement for a specific anthropomorphic mannequin (SAM) phantom is performed for four different positions and all 1-g peak spatial SAR values should meet the requirement. In this work, we propose a novel approach to reduce the maximum 1-g peak spatial SAR value by balancing the SARs. This SAR balancing can be achieved by modifying ground current distributions. Numerical examples are employed to validate our approach. It is observed that the maximum 1-g peak spatial SAR value can be reduced by 40% compared to the case without modifying ground current distributions.
ISSN:1975-0102
2093-7423
DOI:10.1007/s42835-020-00487-6