Journal of Computational Electronics

, Volume 13, Issue 3, pp 709–725 | Cite as

A novel quantum-dot cellular automata CLB of FPGA

Article
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Abstract

Quantum-dot cellular automata (QCA) is a promising, emerging nano-technology based on single electron effects in quantum dots and molecules. This paper presents design, implementation and simulation of a configurable logic block for a field programmable gate arrays (FPGA) by QCA. Previous works focus on QCA-based FPGA that have fixed logic and programmable interconnection or programmable logic and fixed interconnection; however, proposed structures in this paper have programmable logic and programmable interconnection. The presented look-up table implemented with novel structure which has been allowed as frequently as the read/write operation occurs, also acts as a pipeline. In this paper, we presented novel decoders and multiplexers and implemented with QCA, designed with the minimum number of majority gates and cells. Finally, a new configurable logic block (CLB) is designed, implemented and simulated in the QCA, which used signal distribution network method to avoid the coplanar problem of crossing wires. Also, QCADesigner software is used for detailed layout and QCADesigner attend with HDLQ verilog are used for circuit simulation. The proposed CLB is simulated with programming by the QCADesigner software. The area and delay of QCA-based CLB presented in this paper compared to the CLB based on CMOS, nanomaterial and CNT (32 nm). Results show that proposed CLB will do the task with a minimum clock and can be configured as a FPGA.

Keywords

Configurable logic block (CLB) Field programmable gate array (FPGA) HDLQ Majority gate Quantum-dot cellular automata (QCA) Signal distribution network (SDN) 
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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Science and Research Branch, Department of Electrical EngineeringIslamic Azad UniversityTehranIran
  2. 2.Central Tehran Branch, Department of Electrical EngineeringIslamic Azad UniversityTehranIran

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