BPSK Circuit Based on SDC Memristor

Abstract

Digital communication based on memristors is a new field. The main principle is to construct a modulation and demodulation circuit by using the resistance variation characteristics of the memristor. Based on the establishment of the Knowm memristor simulation model, firstly, the modulation circuit is designed by using the polarity and symmetry of the memristor and combined with the commercial current feedback amplifier AD844. It is proved that the modulated signal based on the memristor is a strong function of phase, and the demodulation circuit is designed accordingly. All simulation circuits are based on the actual commercial physical device model. The analytical expression of the output signal of the modulation and demodulation circuit is deduced theoretically, and the communication performance of the whole system is simulated by LTSpice. At the same time, the influence of the parasitic capacitance of the memristor on the circuit performance is also considered. After the simulation verification, the hardware circuit experiment of the modulation and demodulation circuit is carried out. The waveforms of the modulated signal and the demodulated signal are measured by an oscilloscope. The experimental results are completely consistent with the simulation and theoretical results.

Comprehensive Study of SDC Memristors for Resistive RAM Applications

“…Since memristors can handle analogue values and, in addition, the memristor is able to simulate synaptic connections between neurons, some future memristor-based devices could be designed to mimic biological functions and be used to build a brain-like computer [17][18][19]. An intriguing investigation concerning SDC memristors involves their application in modulation/demodulation transceiver links within the context of Binary Phase Shift Keying (BPSK) communication systems [20].…”