Optimal design for 1:2ⁿ demultiplexer using QCA nanotechnology with energy dissipation analysis

Abstract

Quantum‐dot cellular automata (QCA) is an emerging technology to design logic circuits at the nanoscale level. It has the potential to replace the complementary metal oxide semiconductor (CMOS) technology. In this paper, an optimal, single layered, single clocked 1:2 demultiplexer (DeMux) circuit is proposed using 19 QCA cells in QCA technology. Proposed 1:2 DeMux circuit is further utilized for designing of 1:4 DeMux and 1:8 DeMux circuits using 72 and 206 QCA cells respectively. DeMux is an important module at the receiver side in the communication system. The performance of the proposed DeMux circuits are checked and compared with the available similar designs using QCA Designer‐E. Proposed 1:2 DeMux decreases 79.17% layout cost and 50% clock latency as compared to the best reported work in the literature. Proposed 1:4 DeMux reduces 48.57% cells count and 40.63% total area while proposed 1:8 DeMux cuts 63.54% cells count and 64.54% total area as compared to best reported similar works in the literature. Energy dissipation pays an important role to design the energy efficient circuits at nanoscale level. Energy dissipations are estimated using QCA Designer‐E and QCA Pro tools. Proposed 1:2 DeMux saves 8.20% total energy dissipation as compared to the existing design.

Design of reversible Feynman and double Feynman gates in quantum-dot cellular automata nanotechnology

“…Inverter inverts the input. It means the output cell has an opposite polarization as that of the input cell (Sharma, 2021b). Figure 4 shows the schematic of the inverter, its QCA layout and the simulation results.…”

“…It is also known as majority voter. Majority gate has three inputs and one output in QCA layout (Sharma, 2021b). The output of the majority gate is the specific input which has more cardinality out of the inputs.…”

Parity Generators for Nanocommunication Systems Using QCA Nanotechnology

“…The clocking system includes four phases: switch, hold, release, and relax. The phase difference between the consecutive clock phases is 90° [12,13]. The QCA clocking system is displayed in Fig.…”

High performance 2n:1:2n reversible MUX/DMUX architecture for quantum dot cellular automata

“…The MUltipleXer (MUX) 8–12 and DeMUltipleXer (DMUX) 13,14 play a key role in modern digital design 15 . Both MUX and DMUX 16,17 have been utilized in cellular networks, information security, multistage interconnection networks, on‐chip networks, and wideband digital communications.…”

“…6 This has resulted in widespread interest in the design of reversible logic circuits based on QCA over the last few years. 7 The MUltipleXer (MUX) [8][9][10][11][12] and DeMUltipleXer (DMUX) 13,14 play a key role in modern digital design. 15 Both MUX and DMUX 16,17 have been utilized in cellular networks, information security, multistage interconnection networks, onchip networks, and wideband digital communications.…”