Xiaosen Liu

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— Implementing a monolithic highly efficient ultralow photovoltaic (PV) power harvesting system is pivotal for smart nodes of Internet of things (IOT) networks. This paper proposes a fully integrated harvesting system in 0.18-µm CMOS technology. Utilizing a small commercial solar cell of 2.5 cm 2 , the proposed system can provide 0–29 µW of power, which is(More)
—This paper presents a fully-integrated µW-level photovoltaic (PV) self-sustaining energy harvesting system proposed for smart nodes of Internet of Things (IOT) networks. A hysteresis regulation is designed to provide a constant 3.3 V output voltage for a host of applications, including powering sensors, signal processors, and wireless transmitters. Due to(More)
A high-performance bootstrapped comparator operating with a single-polarity power supply is demonstrated for the development of GaN smart power ICs. The comparator features monolithically integrated enhancement-mode (E-mode) and depletion mode (D-mode) AlGaN/GaN HEMTs. The tail current source uses E-mode HEMT, enabling single-polarity power supply. The(More)
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