Model and Applications of Negative Differential Resistance Characteristic Based on NDR-MOS
Lin Mi · Journal of Hangzhou Dianzi University · 2013
The network which has the negative differential resistance(NDR) characteristic based on MOS transistors is introduced in this paper,its characteristics and curves are presented through SPICE simulation by changing parameters.The NDR-MOS network can simulate the I-V characteristic of resonant tunneling diode(RTD).By setting reasonable parameters and bias,a nonlinear curve used for Chua's circuit is created corresponding to the real InGaAs/AlAs/InP heterostructure RTD.The result offers the theory basis for designing chaotic system based on RTD and for constructing the RTD chaos hardware circuit.Compared with the traditional nonlinear network in the chaotic Chua's circuit composed of the operational amplifiers,the chaotic system based on RTD have the advantages of simple structure,low power consumption,high working frequency and so on.