Design and characterization of an and-or-inverter (AOI) gate for QCA implementation

  • Authors:
  • Jing Huang;Mariam Momenzadeh;Mehdi B. Tahoori;Fabrizio Lombardi

  • Affiliations:
  • Northeastern University, Boston, MA;Northeastern University, Boston, MA;Northeastern University, Boston, MA;Northeastern University, Boston, MA

  • Venue:
  • Proceedings of the 14th ACM Great Lakes symposium on VLSI
  • Year:
  • 2004

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Abstract

Quantum-dot Cellular Automata (QCA) offers a new computing paradigm in nanotechnology. The basic logic elements of this technology are the inverter and the majority voter. In this paper, we propose a novel complex and universal QCA gate: the And-Or-Inverter (AOI) gate, which is a 5 input gate consisting of 7 cells. This paper presents a detailed simulation-based analysis of the AOI gate as well as the characterization of QCA defects and study of their effects at logic level. Design implementations using the AOI gate are compared with the conventional CMOS and the majority voter-based QCA methodology. Testing of the AOI gate at logic level is also addressed, unique testing features of designs based on this complex gate have been investigated.