A voltage-controlled chaotic oscillator based on carbon nanotube field-effect transistor for low-power embedded systems

作     者：Van Ha Nguyen Wonkyeong Park Namtae Kim Hanjung Song 

作者机构：Department of Nano Systems EngineeringInje University Department of Electronics EngineeringInje University Center for Nano ManufacturingInje University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2014年第23卷第5期

页      面：617-622页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：Project supported by the Basic Science Research Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Education(Grant No.2011-0011698) 

主　　题：chaos generator carbon nanotube field-effect transistor bifurcation random noise generator 

摘      要：This paper presents a compact and low-power-based discrete-time chaotic oscillator based on a carbon nanotube field-effect transistor implemented using Wong and Deng＇s well-known model. The chaotic circuit is composed of a nonlinear circuit that creates an adjustable chaos map, two sample and hold cells for capture and delay functions, and a voltage shifter that works as a buffer and adjusts the output voltage for feedback. The operation of the chaotic circuit is verified with the SPICE software package, which uses a supply voltage of 0.9 V at a frequency of 20 kHz. The time series, frequency spectra, transitions in phase space, sensitivity with the initial condition diagrams, and bifurcation phenomena are presented. The main advantage of this circuit is that its chaotic signal can be generated while dissipating approximately 7.8 μW of power, making it suitable for embedded systems where many chaos-signal generators are required on a single chip.