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Shift Register With Coupled Bidirectional Bifurcation Amplifiers
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DOI：10.1109/TCSII.2021.3103507.png)
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Bifurcation amplifiers are two-state systems that behave as flip-flops. We propose a two-bit shift register with coupled bidirectional bifurcation amplifiers. We consider a model of the amplifier that is based on a driven nonlinear vibrational system with Duffing nonlinearity. A discussed physical implementation is a nano-mechanical system. The analysis of bifurcation points provides a design framework for driving forces. We use a modulated two-level pulse at the first amplifier and a periodic three-level pulse at the second. We numerically demonstrate that these driving forces allow for the transfer of digital data between each amplifier. Our investigation provides an alternative approach for developing digital shift registers using nonlinear dynamics at the nanoscale.
Keyword:
Vibrations
Shift registers
Barium
Bifurcation
Resonators
Clocks
Oscillators
Coupled bifurcation amplifiers
duffing oscillator
nonlinear vibration
shift register
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