Published Paper Details:

Quantum-dot Cellular Automata (QCA) is a nanoscale computational fabric being explored by the Very Large Scale Integration (VLSI) research community due to the difficulties in the mounting of the CMOS transistors. This work uses QCA devices and uses those devices to build a simple field programmable gate array (FPGA). The FPGA is a combination of multiple Configurable Logical Blocks (CLBs) tiled together. In this work, a novel XOR/XNOR-function logic gate with two inputs, two enable inputs and one output is proposed and designed in QCA nanotechnology. A design rule for specialized architecture design is presented using programmable devices and introduced a simulation engine tuned to efficiently simulate QCA circuits designed for this architecture. In order to demonstrate the functionality and capabilities of the proposed QCA based XOR/XNOR architecture, performance is evaluated and analyzed. The proposed XOR/XNOR logic gate has a superb performance in terms of area, complexity, power consumption and cost function in comparison to some existing QCA-based XOR architectures. Moreover, some efficient circuits based on the proposed XOR/XNOR gate are designed in QCA.