Leicheng Chen

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Dynamic voltage scaling (DVS) can effectively reduce energy consumption by dynamically varying the supply voltage of the system accordingly to the clock frequency. A new DVS-enabled DC–DC converter is presented in this paper. State trajectory is employed to analyze the transient features of PWM and PFM Buck converters. A novel transient enhancement circuit(More)
In this paper, a 3-5GHz IR-UWB transmitter based on 0.18μm CMOS is presented. The transmitter has the features of low power and low complexity by using a symmetrical “Ping-Pong” structure. Two digital transmitters are combined to overcome the noise due to effect of charge injection. A synchronized pulse position modulation and(More)
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