Low-power discrete-time CMOS chaotic oscillator based on approximated non-linear characteristic
Low-power discrete-time CMOS chaotic oscillator based on approximated non-linear characteristic
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DOI：
10.1109/tencon.2014.7022452
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发表时间：
2014-10
期刊：
影响因子：
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通讯作者：
N. Jiteurtragool;C. Wannaboon;W. San-Um;T. Masayoshi
中科院分区：
文献类型：
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作者：
N. Jiteurtragool;C. Wannaboon;W. San-Um;T. Masayoshi
本文提出了一种基于近似非线性特性的低功耗离散时间混沌振荡器。振荡器电路由反相器和减法运算放大器 (Op-Amp) 组成，以便通过运算放大器的增益控制传输特性。该电路一直用作生成离散时间混沌信号的混沌图。根据李亚普诺夫指数和一维分岔图对所提出的电路进行了仿真描述和检验，以表明其具有理想的混沌特性。所设计的电路已通过0.18μm CMOS工艺的仿真验证，具有低功耗的特点。
This paper presents a low-power discrete-time chaotic oscillator based on approximately non-linear characteristic. The oscillator circuit consists of an inverter and subtractor operational amplifier (Op-Amp) in order to controlled transfer characteristics by gain of Op-Amp. The circuit has been using as a chaos map that generates discrete-time chaotic signal. Simulations of proposed circuit are described and examined in terms of Lyapunov exponent and one-dimensional bifurcation diagram to exhibit that it has a desirable chaotic characteristics. The designed circuit has been verified by simulations in a 0.18μm CMOS process to offers low power consumption.