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An Efficient Inverter Logic in Quantum-Dot Cellular Automata for Emerging Nanocircuits

机译:量子点元胞自动机中新兴纳米电路的高效逆变器逻辑

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Quantum-dot cellular automata (QCA) has been advocated as one of the most propitious nanoelectronic technologies. Thefault rates in QCA are very high due to its susceptibility to cell deposition defects. Also, the power requirements of QCA aregetting more critical to avoid either over-design for power rails or unreliability under high-performance stress. Among thedifferent primitive logic structure of QCA, the inverter is keyed out to enable more reliable as well as low-power design. Thiswork proposes a novel approach to generate stimulus for low-power dissipation in QCA logic primitives (inverter) in orderto obtain worst-case power scenarios. Hybridizing rotated and non-rotated QCA cell together with a new low-power invertertile structure in QCA is proposed. Further, the functional characterization of the proposed inverter tile is investigated. Kinkenergy estimation, as well as simulation results, is considered for verifying the circuit layout and functionality. Moreover,a composable logic block is synthesized that realizes triple fanout (with two inverted output). The reliability of these logicprimitives is also extended by implementing full adder and XOR circuit.
机译:量子点细胞自动机(QCA)被提倡为最有利的纳米电子技术之一。由于QCA对细胞沉积缺陷的敏感性,因此其故障率非常高。而且,QCA的电源要求变得越来越重要,以避免电源轨的过度设计或在高性能压力下的不可靠性。在QCA的不同原始逻辑结构中,逆变器已被淘汰,以实现更可靠的低功耗设计。这项工作提出了一种新颖的方法来生成QCA逻辑原语(逆变器)中的低功耗激励,以便获得最坏情况的功耗情况。提出了将旋转和非旋转的QCA单元与QCA中新的低功耗逆变器结构混合在一起的方法。此外,研究了所提出的逆变器瓦片的功能特性。考虑Kinkenergy估计以及仿真结果,以验证电路布局和功能。此外,合成了一个可组合的逻辑块,该逻辑块实现了三倍扇出(具有两个反相输出)。这些逻辑原语的可靠性还可以通过实现完整的加法器和XOR电路来扩展。

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