Abstract
As the mobile phone got more popular, people paid more attention to the issue of electromagnetic (EM) wave hazards. This thesis is committed to recycle the EM wave energy which radiates from the mobile phone to human brain by means of placing a second antenna at faceplate. Because the signal amplitude acquired from the antenna is too small to use for the subsequent circuit, a transformer was designed as the first stage to enlarge the signal amplitude. For charging a lithium ion battery with the recycled energy, a rectifier circuit and a charge pump circuit were implemented. Also, voltage multiplier circuits were proposed to uplift the DC quasi voltage by using antenna AC signal. To make sure of a high transition ratio of the transformer, the TSMC 0.18μm CMOS 1P6M standard process was utilized. The whole chip area is 0.88X0.61mm^2.