Experimental demonstration of 1.5 GHz chaos generation using an improved Colpitts oscillator

被引：25

作者：

Li, Jing Xia ^{[1
]}

Wang, Yun Cai ^{[1
]}

Ma, Fu Chang ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Key Lab Adv Transducers & Intelligent Control Sys, Minist Educ, Taiyuan 030024, Peoples R China

来源：

NONLINEAR DYNAMICS | 2013年 / 72卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Chaos; Colpitts oscillator; Nonlinear dynamics; Ultrahigh frequency; ULTRAHIGH FREQUENCY-RANGE; SYNCHRONIZATION; FEEDBACK;

D O I：

10.1007/s11071-012-0735-1

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Experimental study of the ultrahigh-frequency chaotic dynamics generated in an improved Colpitts oscillator is performed. Reliable and reproducible chaos can be generated at the fundamental frequency up to 1.5 GHz using the microwave BFG520 type transistors with the threshold frequency of 9 GHz. By the tuning of the supply voltages, we observe complex nonlinear dynamics like period-one oscillation, period-two oscillation, multiple-period oscillation, and chaotic oscillation. Typical time series, autocorrelation, and broadband continuous power spectrum are presented. Furthermore, compared with the corresponding classical Colpitts oscillator, the main advantage of the improved circuit is in the fact that by operating in a chaotic mode it exhibits higher fundamental frequencies and a lower peak side-lobe level.

引用

页码：575 / 580

页数：6

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