A New High Performance Realization of Hyperchaotic Modified Canonical Chua Circuit Using JFETs  

作　　者：Prem Bhushan Mital Umesh Kumar R.S. Prasad 

机构地区：[1]IEC College of Engineering and Technology, GB Nagar, Pin-201 306, India [2]Indian Institute of Technology Delhi, Pin-110016, India [3]Inderprastha Eng. College, Sahibabad, Ghaziabad (UP), India

出　　处：《Chinese Physics Letters》2008年第8期2803-2805,共3页中国物理快报（英文版）

摘　　要：A new implementation of hyperchaotic modified canonical Chua circuit using junction field-effect transistors （JFETs） is proposed. The design is based on a source coupled JFET circuit to approximate a smooth cubic nonlinearity and a two-terminal negative resistance element containing a p-n-p silicon transistor and an n-channel JFET. The realization is supported by Orcad Pspice simulation and numerical MATLAB results. The hyperchaotic nature is confirmed by two positive Lyapunov exponents associated with the attractor which is a fractal with a Lyapunov dimension between 3 and 4.A new implementation of hyperchaotic modified canonical Chua circuit using junction field-effect transistors （JFETs） is proposed. The design is based on a source coupled JFET circuit to approximate a smooth cubic nonlinearity and a two-terminal negative resistance element containing a p-n-p silicon transistor and an n-channel JFET. The realization is supported by Orcad Pspice simulation and numerical MATLAB results. The hyperchaotic nature is confirmed by two positive Lyapunov exponents associated with the attractor which is a fractal with a Lyapunov dimension between 3 and 4.

关 键 词：OSCILLATOR 

分 类 号：O45[理学—无线电物理]