Abstract
A simple geometrical Asian-hand model with human tissue properties posed at two common talk-mode positions is proposed for comparative study. The newly designed hand is formed by measuring an adult female hand at open-hand position before being posed into the presented styles. Four human hand tissues are included: skin, bone, muscle, and tendon, and also three homogeneous sets of hands using speciflc anthropomorphic mannequin (SAM) hand phantom dielectric properties. A candy-bar type mobile phone with Planar Inverted-F Antenna (PIFA) is used to radiate dual-band frequency of GSM900/1800 in the vicinity of the SAM head phantom. The mobile phone casing is made out of plastic, and only two components are considered: the FR-4 ground plane and PIFA. The speciflc absorption rate (SAR) averaged over a mass of 10gram and 1gram is calculated after obtaining the power loss density and electric fleld value from simulation in CST Studio Suite 2011. The SAR and return loss results of six hand structures, including the SAM hand phantom are compared. The antenna performance with the inclusion of hand does not decrease as much as 1800MHz in 900MHz range, but absorbs energy more in the hands for 1800MHz than 900MHz SAR values.
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