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In this paper, the design of a 1.2 V charge pump circuit suitable for PLL-based frequency synthesizer with low spurious tone requirement is presented. The proposed charge pump circuit improves current matching in a wide output voltage range by applying a replica biasing technique with a new feedback structure that provides more stable operation. The(More)
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In evaluating Continuous-Time Sigma Delta (ΣΔ) Modulators, the generation of highly accurate results requires long simulation time due to the nonlinear nature of the system. In most cases, a compromise has to be made to trade off precision for speed [2]. This paper presents a circuit-based high level model implemented in the MATLAB SIMULINK(More)
This paper presents a micro-power photovoltaic (PV) harvesting system. A H-bridge configuration DC-DC converter is designed to harvest PV energy and deliver energy to applications of Internet of Thing (IOT). The main converter consists of a single inductor with two inputs and two outputs. It regulates a constant 1V output voltage for several applications(More)