Abstract
This paper presents an investigation on the effect of metallic items on the antenna performance and SAR at 2.4 GHz and 5.8 GHz frequencies. The simulations are performed by means of CST Microwave Studio. The patch dipole antenna is used as the radiating source while the metallic items are modeled as /4 and /2 straight pin-type earrings respectively. The results show that the presence of the head shifted the antenna resonant frequencies and modify the antenna radiation pattern at both investigated frequencies. This study has also indicated that the additional metallic item in close proximity to the head has an additional effect on antenna resonance, albeit quite a small one. However, the straight-pin type earring has significantly increases the amount of energy absorbed in the human head at both frequencies tested.
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