The design and simulation of a titanium oxide memristor-based programmable analog filter in a simulation program with integrated circuit emphasis |
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Authors: | Tian Xiao-Bo and Xu Hui |
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Affiliation: | Embedded System and Solid-State Engineering Technology Center, School of Electronic Science and Engineering, National University of Defense and Technology, Changsha 410073, China |
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Abstract: | In many communication and signal routing applications, it is desirable to have a programmable analog filter. According to this practical demand, we consider the titanium oxide memristor, which is a kind of nano-scale electron device with low power dissipation and nonvolatile memory. Such characteristics could be suitable for designing the desired filter. However, both the non-analytical relation between the memristance and the charges that pass through it, and the changeable V -I characteristics in physical tests make it difficult to accurately set the memristance to the target value. In this paper, the conductive mechanism of the memristor is analyzed, a method of continuously programming the memristance is proposed and simulated in a simulation program with integrated circuit emphasis, and its feasibility and compatibility, both in simulations and physical realizations, are demonstrated. This method is then utilized in a first-order active filter as an example to show its applications in programmable filters. This work also provides a practical tool for utilizing memristors as resistance programmable devices. |
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Keywords: | memristor programmable filter dopant drift SPICE |
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