Abstract
This paper implements two kinds of memristor-based colpitts oscillators, namely, the circuit where the memristor is added into the feedback network of the oscillator in parallel and series, respectively. First, a MULTISIM simulation circuit for the memristive colpitts oscillator is built, where an emulator constructed by some off-the-shelf components is utilized to replace the memristor. Then the physical system is implemented in terms of the MULTISIM simulation circuit. Circuit simulation and experimental study show that this memristive colpitts oscillator can exhibit periodic, quasi-periodic, and chaotic behaviors with certain parameter’s variances. Besides, in a sense, the circuit is robust with circuit parameters and device types.
Highlights
Much attention has been attracted to the investigation of memristor after a long period of expectation and stagnation.[1,2,3,4] memristor is not commercially available so far
Various techniques and circuits have been reported by utilizing the off-the-shelf components to emulate a real memristor’s characteristics, such as the technique by controlling the cubic polynomial function implemented by two multipliers,[5,6,7] technique based on complementary MOS field effect transistors and one multiplier,[8] based on diode bridge circuit,[9,10] the current feedback operational amplifier (CFOA),[11] the light dependent resistor,[12] and so on
The memristor is substituted by a small system called memristor emulator, which is built from the off-the-shelf devices and shows the characteristics of hysteresis loop of a real memristor
Summary
Much attention has been attracted to the investigation of memristor after a long period of expectation and stagnation.[1,2,3,4] memristor is not commercially available so far. We have carried out some work on the memristive colpitts oscillator.[16] and in Ref. 16, we constructed the dynamic model based on the basic characteristics and investigated the aEmail: hm deng@scu.edu.cn 2158-3226/2017/7(3)/035118/8
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