An active voltage doubler utilizing a single supply op-amp for energy harvesting system is presented.The proposed doubler is used\nfor rectification process to achieve both acceptably high power conversion efficiency (PCE) and large rectified DC voltage. The\nincorporated op-amp is self-biased, meaning no external supply is needed but rather it uses part of the harvested energy for its\nbiasing. The proposed active doubler achieves maximum power conversion efficiency (PCE) of 61.7% for a 200Hz sinusoidal input\nof 0.8V for a 20K�© load resistor. This efficiency is 2 times more when compared with the passive voltage doubler.The rectified DC\nvoltage is almost 2 times more than conventional passive doubler.The relation between PCE and the load resistor is also presented.\nThe proposed active voltage doubler is designed and simulated in LF 0.15
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