Abstract: Quantum-dot cellular automata (QCA) are a new and promising computation paradigm, which can be a viable replacement for the complementary metal–oxide–semiconductor technology at nano-scale level. This technology provides a possible solution for improving the computation in various computational applications. It is expected that the CMOS technology reaches to the end of its road map because of many serious challenges such as short channel effect, impurity variations, high cost of lithography and more importantly, the heat. Quantum-dot cellular automata (QCA) are one of the alternative technologies that enable nano-scale circuit design with high performance and low power consumption features. In this aspect, QCA wire crossing is a challenging task in the coplanar QCA fabrication, as defects appear to be inherent due to two cell types in single layout structure.
Some of previous design to introduce new approach for full adder design to full adder structure using an inverter chain. We have proposed a new low-complexity without using inverter chain to reduce circuitry requirement for extra Q-cell and power consumption repulsive geometry structural DUT, which consumes less Area compared to prior designs. To evaluate the usefulness of proposed design a new one bit full adder circuit and CSA with the help of basic full adder design presented. Our design achieves good improvement in cell count and consumes less area in comparison to the best single layer design. QCADesigner tool is used to validate the layout of the proposed designs. The usefulness of exhibited plans has been performed in QCADesigner form 2.0.3
Keywords: - QCA, Nano Technology’ QCA full adder, CSA, QCA Designer.
Title: CARRY SAVE ADDER BY USING COPLANAR FULL ADDER WITHOUT INVERTER CHAIN DESIGN IN QCA
Author: Umashankar Yadav, Umesh Barahdiya
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
Research Publish Journals
