A Faster Means to Estimate SAR Values for Mobile Phone Applications

Author

Chen, I. Fong ; Peng, Chia-Mei ; Hung, Ching-Chih

Author_Institution

Dept. of Electron. Eng., Jinwen Univ. of Sci. & Technol., Hsin-Tien, Taiwan

Volume

8

fYear

2009

fDate

7/1/1905 12:00:00 AM

Firstpage

994

Lastpage

997

Abstract

Based on experimental studies, a robust transformation factor is introduced for transforming the far-field energy to the near-field one. A simple formula is proposed that accurately and quickly estimates the peak 1-g or 10-g averaged specific absorption rate (SAR) in a human phantom exposed to a mobile handset. It is demonstrated experimentally that the proposed formula has higher accuracy for both 1-g and 10-g averaged SAR across different systems (e.g., CDMA, GSM, DCS, PCS, and WCDMA) by using 100 mobile handsets in four different types to be the device under test (DUT). The corresponding root mean squared errors of the calculated results are 9.96% and 6.82% for 1-g and 10-g averaged peak SAR, respectively, thereby confirming the performance predictions.

Keywords

biological effects of fields; mobile handsets; SAR value estimation; device under test; far-field energy; mobile handset; mobile phone application; near-field energy; root mean squared error; specific absorption rate; Far-field; mobile handsets; near-field; root mean squared errors; specific absorption rate (SAR);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2009.2030701

Filename

5210148