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A fully integrated, reconfigurable step-up DC-DC switched-capacitor power supply solution for energy harvesting system is presented in this paper. A new series-parallel architecture of step-up switched-capacitor converter with Pulse Skip Modulation (PSM) is proposed. This converter generates a stable regulated output (1.2V) from an ultra-low input voltage of 0.3V–1.2V. The designed converter achieves...
We report on the generation of three types of bound states in a topological insulator-based mode-locked fiber laser. Benefiting from the excellent performance of the polyvinyl alcohol-based topological insulator saturable absorber (SA), we have achieved three types of bound solitons. The bound states exhibit different features both in spectra and autocorrelation traces, which was found to be caused...
Random carrier-frequency (RCF) modulation has been applied to DC/DC converters, reducing conducted EMI significantly. The selection of the duty cycle is critical in terms of suppressing EMI level in RCF modulation. But limited related literature is available. In this paper, we analysis the effect of duty cycle on suppressing EMI level by deduced the expression of the amplitude of switching voltage...
This paper introduces a signal transmission technique for the downlink of multiple-input multiple-output (MIMO) multi-user wireless systems. By applying non-uniformly spaced modulation constellations, i.e., hierarchical modulation constellations, we show that multiple services with different QoS requirements or the same service of randomly located multiple users in a cell can be supported simultaneously...
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