Gain and phase adjustable amplifier based on memristor

Abstract

The invention discloses a gain and phase adjustable amplifier based on a memristor. Electrical characteristics of the memristor are combined with a negative resistance source coupling differential pair circuit, and the gain and the phase of the amplifier are changed by setting the resistance value of the memristor through pulse programming. A current mirror with high output impedance is adopted tobypass a direct current component of the memristor in architecture, so that the static working voltage between the two ends of the memristor is smaller than threshold voltage of the memristor, and compared with a traditional bypass capacitor mode, the layout area of an integrated circuit is remarkably saved. A negative resistance generation circuit is connected with the memristor in series, the memristor serving as a positive resistor is adjusted through pulse programming, an adjustable resistance value within a certain positive and negative resistance value range can be obtained, and the positive and negative adjustable resistors serve as loads of a source coupling differential pair circuit, so that the gain of the amplifier can be adjusted, and the phase of the amplifier can also be adjusted.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a memristor-based amplifier with adjustable gain and phase. Background technique [0002] Memristors are the fourth basic circuit element besides resistors, capacitors, and inductors, and represent the mathematical relationship between the amount of charge and magnetic flux. In recent years, with the continuous advancement of nanostructure characterization technology and in-depth research on the performance of memristors, the preparation and application of memristors have achieved certain development, realizing the integration and comprehensive application of memristors in the electronic field become possible. Since the memristor has a resistance memory function, its resistance value changes with the change of its charge, and the size of the resistance value will change reversibly with the direction or polarity of the charge, so this feature can be integrated in the ...

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is that the circuit of the traditional gain and phase control amplifier is relatively complicated, and it is difficult to realize the problem of pulse programming control of gain and phase, and provides a gain and phase adjustable amplifier based on memristor

Images