Abstract
Recent mobile handhelds, for example, smart-phone, can be charged wirelessly using the traditional wireless communication technologies as well as a new energy-harvesting circuit. In particular, Bluetooth with a charging circuit enables a short-range wireless charging of a mobile handheld. This study presents an overview of power-charging structures and proposes a new charging and harvesting circuit based on schottky diode with a real commercial film-type antenna on mobile terminal. The authors' new circuit improves the charging efficiency approximately by 160%, that is, 0.45 mA rather than 5 mA for a current Smartphone in the consumer market.
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