Research project principal investigator: Professor Po-Hung Chen
1. NCTU-Osaka University team has developed an energy harvesting interface based on the thermoelectric generator information provided by Tohoku University. This year, we have developed a high-conversion-ratio thermoelectric energy harvesting interface that can convert 40mV input to 4.6V output with high efficiency. The measurement results demonstrate maximum 115x conversion ratio with 67.8% efficiency, which is the highest to date. The results have been published in IEEE Transaction on Circuits and Systems Part I (TCAS-I) 2020.
2. To improve the device performance, Tohoku University has developed the improved thermoelectric generator. The related results have been published in IEEJ Transactions on Sensors and Micromachines 2020.
3. NCTU and Tokyo University have co-developed a wireless power transmission system for biomedical applications. It provides an alternative solution for batteryless implantable/wearable devices. This year, we have develop a high-efficiency wireless power transmission system. It achieves 71.5% end-to-end power conversion efficiency using CMOS technology. It is the highest end-to-end efficiency to date. The results have been accepted to IEEE Journal of Solid-State Circuits.