New fully single layer QCA full-adder cell based on feedback model

Somaye Mohammadyan, Shaahin Angizi, Keivan Navi

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Quantum-dot cellular automata (QCA) is one of the pioneer nanoelectronics for possible substitution of conventional CMOS circuits. In this paper, a nanoelectronic-compatible gate-level design for one-bit full-adder cell is proposed. This design is appropriate to apply in most of majority gate-based technologies. Hence, a fully single layer QCA structure for one-bit full-adder cell is implemented using this cell. The addition operation in the presented cell is accomplished using a feedback loop. This loop saves carry value through a synchronised four-phase QCA wire to produce sum value at the next level. The proposed one-bit full-adder cell excels most of previously reported structures by removing wire crossing overhead and decreasing cell complexity. QCADesigner tool as a popular simulation engine in QCA area is used for endorsing the proper functionality of the proposed circuit.

Original languageEnglish (US)
Pages (from-to)202-208
Number of pages7
JournalInternational Journal of High Performance Systems Architecture
Issue number4
StatePublished - 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture


  • Feedback model
  • Majority gate-based technologies
  • Nanoelectronics
  • One-bit full-adder cell
  • QCA
  • Quantum-dot cellular automata
  • System architecture


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