Abstract
A novel architecture suitable for designing squaring circuits in Quantum-dot Cellular Automata (QCA) nanotechnology is explored in this manuscript. It consists of a reduced partial product array followed by a Dadda adder tree and a final carry-flow adder. A new full adder (FA) layout is also introduced that is more area efficient than the already proposed ones. The proposed squarers offer an execution delay of (2n − 1) clock zones. Layouts of the proposed squarers using multilayer design in the QCAdesigner toolset are presented and their area and delay complexities are compared against previously proposed multipliers.
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