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Novel Efficient Circuit Design for Multilayer QCA RCA

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Abstract

The novel emerging technology, QCA technology, is a candidate for replacing CMOS technology. Full Adder (FA) circuits are also widely used circuits in arithmetic circuits design. In this paper, two new multilayer QCA architectures are presented: one-bit FA and 4-bit Ripple Carry Adder (RCA). The designed one-bit multilayer FA architecture is based on a new XOR gate architecture. The designed 4-bit multilayer QCA RCA is also developed based on the designed one-bit multilayer QCA FA. The functionality of the designed architectures are verified using QCADesigner tool. The results indicate that the designed architecture for 4-bit multilayer QCA RCA requires 5 clock phases, 125 QCA cells, and 0.17 μm2 area. The comparison results confirm that the designed architectures provide improvements compared with other adder architectures in terms of cost, cell count, and area.

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Authors and Affiliations

  1. ACECR Institute of Higher Education, Isfahan Branch, Isfahan, 84175-443, Iran

    Hamid Reza Roshany & Abdalhossein Rezai

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  1. Hamid Reza Roshany
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  2. Abdalhossein Rezai
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Correspondence to Abdalhossein Rezai.

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Roshany, H.R., Rezai, A. Novel Efficient Circuit Design for Multilayer QCA RCA. Int J Theor Phys 58, 1745–1757 (2019). https://doi.org/10.1007/s10773-019-04069-9

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  • DOI: https://doi.org/10.1007/s10773-019-04069-9

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