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Degradation-modeling based prognostic approach has been proved as an effective alternative to the conventional lifetime-data dependent residual life prediction method, and thus draw much attention of both scholars and engineers in the field of reliability. The degradation process of a system is the result of interaction between its inner states and working environments. To provide a reasonable reference...
A novel double channel quadrature mixer was proposed in the paper. In this mixer, polycrystal resistance, source injection current of switch transistor, series inductor of common source node, degeneration impedance in driving stage were adopted. The circuit was designed and simulated by Candence. The results indicated that the phase noise were 7.47 dB/Hz@1MHz, 9.35 dB/Hz@100KHz and 16.39 dB/Hz@10KHz...
A new novel fully-differential charge pump was designed in this paper, differential input and differential output was used in this circuit. The differential output circuit not only reduced the voltage noise created by leakage current, but also increased the ascending/descending speed and the range of output voltage. In the differential input, positive feedback circuit was used to increase the switching...
A novel structure of the integrated cascode crystal oscillator is presented by analyzing the discrete oscillator circuits in this paper. A temperature-independent voltage source, which is suitable for integrated circuits, was used for biasing of the buffer amplifier, while eliminating the bypass capacitor. Both the oscillator circuits and the buffer amplifier use the common divider resistance. The...
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