A symmetric quantum-dot cellular automata design for 5-input majority gate

By the inevitable scaling down of the feature size of the MOS transistors which are deeper in nanoranges, the CMOS technology has encountered many critical challenges and problems such as very high leakage currents, reduced gate control, high power density, increased circuit noise sensitivity and ve...

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Bibliographic Details
Published in:Journal of computational electronics 2014-09, Vol.13 (3), p.701-708
Main Authors: Roohi, Arman, Khademolhosseini, Hossein, Sayedsalehi, Samira, Navi, Keivan
Format: Article
Language:English
Subjects:
Adding circuits
Automata theory
Cells
Cellular automata
Circuit design
Circuits
Design
Electrical Engineering
Energy
Engineering
Leakage current
Mathematical and Computational Engineering
Mathematical and Computational Physics
Mechanical Engineering
MOS devices
Noise sensitivity
Optical and Electronic Materials
Power consumption
Power management
Quantum dots
Theoretical
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Summary:By the inevitable scaling down of the feature size of the MOS transistors which are deeper in nanoranges, the CMOS technology has encountered many critical challenges and problems such as very high leakage currents, reduced gate control, high power density, increased circuit noise sensitivity and very high lithography costs. Quantum-dot cellular automata (QCA) owing to its high device density, extremely low power consumption and very high switching speed could be a feasible competitive alternative. In this paper, a novel 5-input majority gate, an important fundamental building block in QCA circuits, is designed in a symmetric form. In addition to the majority gate, a SR latch, a SR gate and an efficient one bit QCA full adder are implemented employing the new 5-input majority gate. In order to verify the functionality of the proposed designs, QCADesigner tool is used. The results demonstrate that the proposed SR latch and full adder perform equally well or in many cases better than previous circuits.
ISSN:1569-8025
1572-8137
DOI:10.1007/s10825-014-0589-5