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This paper describes a greatly simplified model for the prediction of phase noise in oscillators which use a negative resistance as the active element. It is based on a simple circuit consisting of the parallel addition of a noise current, a negative admittance/resistance, and a parallel (Qlimited) resonant circuit. The transfer function is calculated as a forward trans-resistance (VOUT/IIN) and then...
Travelling wave fault location is the most common method for HVDC transmission line fault locating, the accuracy of which is of great importance for the fast recovery of HVDC transmission line faults. However, the accuracy further improvement is seriously obstructed by the coordination problem of the wavefront and the wave speed applied in existing fault location devices. To solve the problem, a novel...
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