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《Journal of Circuits and Systems》 2010-02
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Frequency detection of weak signal based on double differential Duffing oscillators

WANG Mei,YAN Yong,ZHANG Hui-feng (Information &communication college of Guilin university of Electronic Technology,Guilin 541004,China)  
When using Duffing oscillator to detect the amplitude of weak signal,the first step is to learn the frequency of the detected signal.In this article,differential double oscillators are used to make oscillator array to detect the frequency of unknown signal.The common ratio of the frequency of the oscillators in the oscillator array is 1.06 instead of 1.03.Simulation results show that this method can expand the frequency detect band,decrease calculated amount and reduce the probability of miscarriage of justice.
【CateGory Index】: TN911.23
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