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Un diseño novedoso y optimizado de D-latch y D flip-flop para sistemas digitales basados en QCA
Pezhman Kiani Vosta1, Mohammad Gholami2
1Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, Babol Noshirvani University of Technology, Babol, Iran.
Scientific reports
|August 22, 2025
Resumen
Este estudio introduce nuevos diseños de autómatas celulares de punto cuántico (QCA) para D-latches y D-flip-flops, reduciendo significativamente el número de células y el área para sistemas digitales eficientes a nanoescala.
Área de la Ciencia:
- La electrónica cuántica
- Sistemas digitales a nanoescala
- Tecnología de autómatas celulares de punto cuántico (QCA)
Sus antecedentes:
- Los circuitos QCA se enfrentan a desafíos en el recuento de células, la eficiencia del área y el retraso.
- Los diseños de QCA existentes requieren optimización para aplicaciones prácticas.
Objetivo del estudio:
- Proponer diseños novedosos y compactos de D-latch y D flip-flop utilizando tecnología QCA.
- Mejorar la eficiencia en términos de número de células, área y retraso para los circuitos QCA.
- Desarrollar un registro de cambio compacto de 4 bits basado en los diseños propuestos.
Principales métodos:
- Diseño y simulación de nuevos circuitos D-latch y D flip-flop basados en QCA.
- Utilizando QCA Designer versión 2.0.3 para todas las simulaciones.
- Cumplimiento de los principios de diseño establecidos para la implementación del circuito.
Principales resultados:
- El flip-flop D propuesto utiliza 28 celdas, ocupa 0,02 μm2, con un retraso del ciclo de reloj de 0,5.
- El cerrojo D propuesto utiliza 18 celdas, ocupa 0,01 μm2, con un retraso comparable.
- Reducciones significativas en el número de células (hasta el 44,5%) y el área (hasta el 60%) en comparación con los diseños anteriores.
Conclusiones:
- Los diseños desarrollados de QCA D-latch y D flip-flop ofrecen una mayor compacidad y eficiencia.
- Estos diseños muestran potencial para implementaciones de circuitos de baja potencia y alta densidad en la tecnología QCA.
- El estudio contribuye al avance de los sistemas digitales a nanoescala basados en QCA.
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