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Differential input operational circuit based on memristor

A differential input, memristor technology, applied in CAD circuit design, instruments, calculations, etc., can solve the problems of low temperature stability of potentiometers, difficult dynamic control, etc., to achieve simple structure, strong anti-interference, and application prospects expansive effect

Active Publication Date: 2019-10-11
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]In the traditional analog filter circuit, in order to realize the adjustable cut-off frequency, it is generally chosen to replace the resistance in the circuit with a potentiometer, and the resistance value of the potentiometer is manually adjusted To indirectly adjust the cut-off frequency in the filter circuit, it is not easy to realize dynamic control; in addition, the temperature stability of the potentiometer is not high, and the zero point drift caused by the influence of temperature is more serious

Method used

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  • Differential input operational circuit based on memristor
  • Differential input operational circuit based on memristor
  • Differential input operational circuit based on memristor

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Embodiment 1

[0016] A differential input arithmetic circuit based on a memristor, including a differential proportional amplifying circuit. The differential proportional amplifying circuit includes two input terminals and an output terminal. The output terminal of the differential proportional amplifying circuit and the two input terminals are both connected A memristive low-pass filter circuit, the input signals at the two input ends are signals with opposite polarities.

[0017] In this embodiment, the two input signals of the differential proportional amplifier circuit are the input after filtering and compensation of the memristive filter circuit, and the output of the differential proportional amplifier circuit is also the output after filtering and compensation of the memristor filter circuit. ; Memristive low-pass filter circuit has the ability to control the dynamic expansion range of the pass band when the low-frequency band frequency of the input signal is unstable, and compensate fo...

Embodiment 2

[0019] See figure 1 , figure 2 with image 3 , A memristor-based differential input arithmetic circuit, including a differential proportional amplifying circuit, the differential proportional amplifying circuit includes an operational amplifier A with a non-inverting input, an inverting input and an output, operational amplifier The inverting input terminal of A is connected with a memristor Rm 2 And capacitance C 2 Memristive filter LB 2 , Memristor Rm 2 Through the resistor R 1 Connect with inverting input signal source, capacitor C 2 One end and memristor Rm 2 The output terminal is connected, the capacitor C 2 The other end is grounded; the non-inverting input of operational amplifier A is connected with a memristor Rm 3 And capacitance C 3 Memristive filter LB 3 , The input terminal of the memristor Rm3 passes through the resistance R 2 Connect with the positive phase input signal source, capacitor C 3 One end and memristor Rm 3 The output terminal is connected, the capacit...

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Abstract

The invention relates to the technical field of digital analog circuits and discloses a differential input operational circuit based on a memristor. The circuit comprises a differential proportional amplification circuit, the differential proportional amplification circuit comprises two input ends and an output end, the output end and the two input ends of the differential proportional amplification circuit are respectively connected with a memristor low-pass filter circuit, and input signals of the two input ends are signals with opposite polarities. The low-pass filter circuit is applied tothe effective and accurate differential double-input circuit, the structure is simple, the amplification function of low-frequency signals can be achieved through two inputs with opposite polarities,and the differential double-input circuit has the advantages of being capable of amplifying tiny signals, high in interference resistance, simpler in structure, wide in application prospect and the like.

Description

Technical field [0001] The invention relates to the technical field of digital analog circuits, in particular to a memristor-based differential input operation circuit. Background technique [0002] Memristor (Memristor) was proposed in 1971 by Professor Leon. O. Chua, a Chinese American scientist at the University of California, Berkeley, from the perspective of symmetry. It was not until 2008 that HP Labs in the United States produced a real memristor for the first time. At present, memristive is a new type of micro-circuit device. The research on memristive at home and abroad is still in its infancy. The world's first memristor was born in a harsh experimental environment, so it is currently possible to directly perform research on memristors. There are few laboratories for experimental research, so there are still many difficulties in the realization of memristors. [0003] The memristor represents the relationship between charge and magnetic flux. It is a dynamic element and...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/36G06F30/367
Inventor 丁芝侠胡蝶陈冲
Owner WUHAN INSTITUTE OF TECHNOLOGY