Abstract
In this paper, the effect of user’s body is studied over previously proposed antenna. The effect of “Specific Anthropomorphic Mannequin (SAM) head and PDA hand (Talk mode)”, “Personal Digital Assistants (PDA) hand (Data mode)”, and “Dual hands (Read mode)” are studied for diversity performances. There are two different positions of the antenna over mobile circuit board is considered i.e., antenna at the top position and bottom position of the mobile circuit board. In the user proximity, the optimal location of the antenna over circuit board is chosen for real application based on the antenna performance parameters i.e. diversity parameters. The specific absorption rate (SAR) for American standard (1.6W/kg average over 1g tissues) and European standard (2W/kg average over 10g tissues) is calculated for the top and bottom position of the MIMO antenna elements and it is found that the values of SAR are well below the standard limit of FCC as well as European standard. Based on the study, it is found that antenna at the top position of mobile circuit board shows overall better performance in the presence of user’s body.
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