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학술지 SAR Comparison of SAM Phantom and Anatomical Head Models for a Typical Bar-Type Phone Model
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저자
이애경, 홍선의, 권종화, 최형도
발행일
201510
출처
IEEE Transactions on Electromagnetic Compatibility, v.57 no.5, pp.1281-1284
ISSN
0018-9375
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TEMC.2015.2433314
협약과제
14MR1100, 스마트사회 전자파노출량 제어기반 구축, 최형도
초록
The current IEEE 1528 and IEC 62209-1 standards specify a simplified physical model of the human head to provide conservative measurement procedures of the peak spatial-average specific absorption rate (SAR) of a mobile phone. This means that the evaluated SAR in a specific anthropomorphic mannequin (SAM) head model should be higher than in the heads of a significant majority of users under normal operational conditions. In this paper, the conservativeness of the SAM is investigated by numerically comparing the SAR in the SAM with those in four anatomical head models at different ages for exposure from a typical bar-type mobile phone. A numerical bar-type phone model with an internal antenna at the bottom of the phone body was implemented at 835 and 1850 MHz. This model provides an SAR pattern and levels similar with the commercial bar phones released in Korea. For two standard test positions, spatial peak 1- and 10-g SARs were calculated for both the SAM phantom and anatomical head models. The SARs were also calculated when the antenna is located on top of the phone. The results show that the SAM phantom provides a conservative evaluation for a phone model with the antenna on the top. However, when the antenna is located at the bottom, the hotspot in the SAM occurred farther from the antenna feed point, and, thus, produced lower 1- and 10-g SAR results compared with the anatomical models.
키워드
Electromagnetic exposure, mobile phone, specific absorption rate, specific anthropomorphic mannequin phantom
KSP 제안 키워드
Antenna Feed, Different ages, Electromagnetic exposure, Internal Antenna, Measurement procedure, Physical model, SAM phantom, Specific anthropomorphic mannequin, Standard Test, anatomical model, feed point