Abstract
A wearable antenna based on the metal watchband is proposed. A prototype of a TISSOT® classic watch is used for the demonstration. The width of the strap has a slight impact on the radiation patterns. However, the variations of the feeding position would sharply influence the matching performance. A fractional bandwidth of 77.8% could be obtained when feeding to the side of the dial at 2.46 GHz, which falls into the ISM (Industrial, Scientific, and Medical) band. The main lobe is fairly wide in both E and H plane, which enables the strap antenna a good adaptation for the versatile gestures of the arm. The measured results show good agreement with that of the simulations, which indicates the antenna a potential choice for the applications of wearable systems.
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