Effects of using conductive materials for SAR reduction in mobile phones

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)140-144
Journal / PublicationMicrowave and Optical Technology Letters
Volume44
Issue number2
Publication statusPublished - 20 Jan 2005

Abstract

Adding an external shield to mobile phones is one of the common methods adopted for the reduction of the specific absorption rate (SAR), which is the safety level of human exposure to radiated electromagnetic fields from mobile phones. This paper provides an experimental study on the effectiveness of SAR reduction by attaching conductive materials to mobile phones, and the corre-sponding effects of the antenna performance of the mobile phones. The results show a typical trade-off of a 20% reduction in the SAR value with a maximum 1.8-dB reduction in the received power of the antenna. The results also conclude that the attachment position of the shielding material is an important factor, whereby the hot spot of the SAR distribution of the mobile phone must be well covered in order to achieve good SAR reduction. ©2004 Wiley Periodicals, Inc.

Research Area(s)

  • Antenna pattern, Mobile phone, Shielding, Specific absorption rate (SAR)

Citation Format(s)

Effects of using conductive materials for SAR reduction in mobile phones. / Chan, K. H.; Chow, K. M.; Fung, L. C.; Leung, S. W.

In: Microwave and Optical Technology Letters, Vol. 44, No. 2, 20.01.2005, p. 140-144.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review