DOI Number : 10.5614/j.eng.technol.sci.2014.46.2.4
Hits : 18

Parameter Selection of Oscillator Resonant Circuit Based on Stochastic Differential Equation

Yan Gang Feng1,2, Huang Xian He3 & Xu Ning Jing1
1School of Electronic Information Engineering, Chengdu University, No.1 Shiling Town, Chengdu, 610106, China
2College of Computer Science, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
3School of Automation Engineering, University of Electronic Science and Technology of China, No. 4, Section 2, North Jianshe Road, Chengdu, 611731, China
Email: uestcygf@163.com


Abstract. Because the choice of oscillator resonant circuit parameters depends mostly on experience, we propose nonlinear differential equations to describe an oscillator based on an equivalent circuit of the oscillator and then to describe the internal electrical noise of the oscillator by introducing a stochastic term that establishes a nonlinear stochastic differential equation to analyse the oscillatorís behavior. For optimization of the oscillator resonant circuit parameters, first, we used Advanced Design System (simulation software of the Agilent company) to verify the conclusion, and then, using a 10MHz Pierce crystal oscillator, provided experimental evidence.

Keywords: circuit simulation; oscillators; parameter optimization; phase noise;resonant parameters; stochastic differential equation.

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