Lan Dai

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In this paper, a monolithic linear charger for single-cell Lithium-ion batteries is presented. It is capable of operating within USB power specifications and adopts multiple charging modes (constant-current and constant-voltage). Due to novel constant-current and constant-voltage charging circuits, it achieves high stability and high accuracy charging(More)
Due to the limitation of non-ideal factors such as gain error, capacitor mismatch and offset, resolution of pipelined ADC is limited to 10 bits below. Focusing on it, this paper presents a digital calibration algorithm based on voltage threshold of comparator in every stage for pipelined ADC. This method improves pipelined ADC's performance by injecting(More)
In this paper, a novel low complexity integer frequency offset estimation algorithm is derived for broadcast type orthogonal frequency division multiplexing (OFDM) systems. Different from conventional algorithm, the power detection technique and signed bits of subcarriers are exploited, so the algorithm complexity is lowered greatly. Simulation results have(More)
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