A Novel Memristor-Based Analog Multiplier

Most existing analog multipliers use current or voltage as input variables. This paper innovatively proposes a memristor-based analog multiplier, which uses voltage as one input variable and memristance as the other input variable, with a relatively simple circuit structure and a relatively large input-output range. The proposed memristor-based analog multiplier is mainly composed of a memristor control circuit that changes the memristance and a multiplication operation circuit that builds the multiplication relationship between the input voltage and the memristance. In implementing the multiplication relationship, the input voltage is transferred as the partial by the resistor R1 at the input terminal. According to the principle of the Cascode current mirror, the input terminal current is equal to the output terminal current, thereby multiplying the current of output terminal by the memristance can achieve the multiplication of input voltage and memristance. DC analysis and PSPICE simulation indicate that the proposed memristor-based analog multiplier exhibits relatively superior performance.