Resistive Coupling of Bistable Resistor-Based Oscillators for Oscillatory Neural Network
Seong‐Yun Yun, Ye-Seong Chung, Joon‐Kyu Han, Sang‐Won Lee, Yang‐Kyu Choi · IEEE Transactions on Electron Devices · 2024
An oscillatory neural network (ONN) is demonstrated by coupling a set of bistable resistor-based oscillators (birillators) through a coupling resistor (${R}_{\text {C}}$). Each birillator is composed of a nonlinear bistable resistor (biristor) and a load resistor (${R}_{\text {L}}$), which are connected in series. The synchronization behavior of oscillations among the resistively coupled birillators varies according to${R}_{\text {C}}$. When an external sine-wave signal was applied to the resistively coupled birillators, the phase of the oscillations was binarized by second-harmonic injection locking (SHIL). These coupled birillators with SHIL solved combinatorial optimization problems.