Proficient n-bit Full Adder Circuit Designs in Field-Coupled QCA Nanotechnology
Sankit Ramkrishna Kassa, Neeraj Kumar Misra, Narendar Vadthiya, Vijay Kumar Lamba · 2023
Emerging Quantum dot cellular automata (QCA) technology has been created as a viable replacement for digital CMOS devices. QCA circuits, which are more energy-efficient and tightly packed than traditional transistors, may be created using standard semiconductor manufacturing procedures. Similar to CMOS switching transistors, QCA technology is a field coupling paradigm that uses tiny semiconductor crystals as the building blocks of information in computer circuits. This paper invented a unique full adder architecture based on coplanar cells operating in independent clock domains. The field-coupled QCA tool, QCADesigner v2.0.3 is utilized for 1-bit full-adder that uses 50 cells, has a 1.2 ns latency, and occupies only 0.5 μm² area. When compared to the most recent QCA-based full adder designs, the 1- bit and 2-bit full adder circuits demonstrate considerable improvements in cell count, latency, clock period, and size.