Title :
The PSpice simulation and analysis of weak signal detection circuit based on stochastic resonance in Duffing system
Author :
Chen Peng ; Cai Jinyan ; Du Minjie ; Zhu Sai
Author_Institution :
Opt. & Electron. Eng. Dept., Mech. Eng. Coll., Shijiazhuang, China
Abstract :
This paper revises the SNR theory approximate computational formula based on Duffing system with the system parameter of the first order differential term. The weak signal detection circuit based on stochastic resonance in Duffing system is simulated by PSpice software and from the simulation the relationships between SNR and some typical elements are discussed. The problem of operational amplifiers offset voltage accumulation in the circuit based on Duffing system is solved. The simulations confirm the feasibility of the weak signal detection circuit presented and especially verify the SNR improvement capacity.
Keywords :
SPICE; differential equations; operational amplifiers; signal detection; Duffing system; PSpice simulation; SNR theory approximate computational formula; offset voltage accumulation; operational amplifier; stochastic resonance; weak signal detection circuit; Equations; Integrated circuit modeling; Mathematical model; Signal detection; Signal to noise ratio; Strontium; Duffing system; PSpice simulation; amplifying circuit; stochastic resonance; weak signal detection;
Conference_Titel :
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-8036-4
DOI :
10.1109/ICEICE.2011.5778117
