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Study of chaotic phenomena of phase-locked frequency detector |
Tan Yongming①; Deng Lihu②; Zheng Jiyu③ |
①Dongguan Institute of Technology Dongguan 523106 China;③Guilin Institute of Electronic Technology Guilin 541004 China |
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Abstract This paper studies chaotic phenomena of phase-locked frequency detector that is used extensively in radio technology and modern communication fields. By Mel’nikov’s method, phase-locked frequency detector will output chaotic signal when the system’s parameter and the parameters of input signal satisfy certain conditions. By circuit experiment, when the circuit outputs chaotic signal, the continuous spectrum of the voltage-controlled oscillator’s output is observed from frequency spectrograph. The fact of phase-locked frequency detector exists chaotic phenomena is father verified. The experimental results and theory analysis correspond excellently with one another. The conclusion in this paper has importance directive significance for practical design and application of the phase-locked frequency detector.
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Received: 02 January 2001
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