A Novel Quantum-dot Cellular Automata Switch for Field Programmable Gate Arrays

In this paper, we propose a novel Quantum-dot Cellular Automata (QCA) based Programmable Switch Matrix which can be used as a routing element for future nano Field Programmable Gate Arrays (FPGAs). QCA technology is an emerging technology based on encoding binary information in charge configuration within quantum dot cells. In FPGAs, the Programmable Switch Matrix (PSM) is the interconnection circuit which switches the signals at the intersection of the horizontal and vertical routing channels. The main goal behind the design of QCA based PSM is to design a routing element for transistor-less nano FPGAs. The proposed QCA based Programmable Switch Matrix (QPSM) has an advantage over the area and the number of cells compared to earlier designs. The proposed QPSM is implemented and simulated using the QCA Designer tool.