Single-bit comparator in quantum-dot cellular automata (QCA) technology using novel QCA-XNOR gates

Ali Hussien Majeed , Mohd Shamian Zainal , Esam Alkaldy , Danial Md. Nor
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引用次数: 23

Abstract

To fill the continuous needs for faster processing elements with less power consumption causes large pressure on the complementary metal oxide semiconductor (CMOS) technology developers. The scaling scenario is not an option nowadays and other technologies need to be investigated. The quantum-dot cellular automata (QCA) technology is one of the important emerging nanotechnologies that have attracted much researchers’ attention in recent years. This technology has many interesting features, such as high speed, low power consumption, and small size. These features make it an appropriate alternative to the CMOS technique. This paper suggests three novel structures of XNOR gates in the QCA technology. The presented structures do not follow the conventional approaches to the logic gates design but depend on the inherent capabilities of the new technology. The proposed structures are used as the main building blocks for a single-bit comparator. The resulted circuits are simulated for the verification purpose and then compared with existing counterparts in the literature. The comparison results are encouraging to append the proposed structures to the library of QCA gates.

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采用新型QCA- xnor门的量子点元胞自动机(QCA)技术中的单比特比较器
以更低功耗满足对更快处理元件的持续需求给互补金属氧化物半导体(CMOS)技术开发者带来了巨大的压力。如今,扩展方案不是一种选择,需要研究其他技术。量子点元胞自动机(quantum-dot cellular automata, QCA)技术是近年来备受关注的重要新兴纳米技术之一。该技术具有速度快、功耗低、体积小等特点。这些特性使其成为CMOS技术的合适替代品。本文提出了QCA技术中三种新颖的XNOR门结构。所提出的结构不遵循传统的逻辑门设计方法,而是依赖于新技术的固有能力。所提出的结构被用作单比特比较器的主要构建块。仿真得到的电路用于验证目的,然后与文献中的现有对应物进行比较。比较结果令人鼓舞,可以将所提出的结构添加到QCA门库中。
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来源期刊
Journal of Electronic Science and Technology
Journal of Electronic Science and Technology Engineering-Electrical and Electronic Engineering
CiteScore
4.30
自引率
0.00%
发文量
1362
审稿时长
99 days
期刊介绍: JEST (International) covers the state-of-the-art achievements in electronic science and technology, including the most highlight areas: ¨ Communication Technology ¨ Computer Science and Information Technology ¨ Information and Network Security ¨ Bioelectronics and Biomedicine ¨ Neural Networks and Intelligent Systems ¨ Electronic Systems and Array Processing ¨ Optoelectronic and Photonic Technologies ¨ Electronic Materials and Devices ¨ Sensing and Measurement ¨ Signal Processing and Image Processing JEST (International) is dedicated to building an open, high-level academic journal supported by researchers, professionals, and academicians. The Journal has been fully indexed by Ei INSPEC and has published, with great honor, the contributions from more than 20 countries and regions in the world.
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