Design and simulation of modular 2ⁿ to 1 quantum‐dot cellular automata (QCA) multiplexers

Abstract

SUMMARYIn this paper a novel design of a quantum-dot cellular automata (QCA) 2 to 1 multiplexer is presented. The QCA circuit is simulated and its operation is analyzed. A modular design and simulation methodology is developed, which can be used to design 2 n to 1 QCA multiplexers using the 2 to 1 QCA multiplexer as a building block. The design methodology is formulated in order to increase the circuit stability.

Introduction

“…Energy dissipation per clock cycle in QCA adder circuits is studied in [49]. A modular design of 2 n -to-1 multiplexers in QCA is presented in [50]. An interesting extension of [44] to a new type of adder called Carry Flow Adder (CFA) is presented in [51].…”

Finite difference schemes for heat conduction analysis in integrated circuit design and manufacturing

“…In [15,16], the CN method with 2 ] is also unconditionally stable, which can be proved similarly, and requires the solution of a set of equations which can be expressed as…”

“…Equation (2), which is one dimensional, is a second-order parabolic PDE which is applicable to simplified thermal simulation cases, such as an interconnect line passing over the substrate [7]. The first step to establish a finite-difference solution method of the PDE is to discretize the continuous x coordinate into a finite number of grid points with an interval ( x).…”

Implementation Of One bit Parallel Memory Cell using Quatum Dot Cellular Automata

“…In [3] Mardirisi and Karafyllidis have proposed modular to 1 multiplexer which is formulated to increase the circuit stability. They have used the concept of crossover design for signal propagation and have shown each logic gate with a block.…”