Design of quaternary 4-2 and 5-2 compressors for nanotechnology

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• 作者：Fazel Sharifi^a ; ^{f_sharifi@sbu.ac.ir}Author Vitae ; Atiyeh Panahi^aAuthor Vitae ; Hojjat Sharifi^bAuthor Vitae ; Keivan Navi^aAuthor Vitae ; Nader Bagherzadeh^cAuthor Vitae ; Himanshu Thapliyal^dAuthor Vitae
• 关键词：Compressor ; CNFET ; Nanotechnology ; MVL ; Quaternary
• 刊名：Computers & Electrical Engineering
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：56
• 期：Complete
• 页码：64-74
• 全文大小：1074 K
• 卷排序：56

文摘

Recently, Multiple Valued Logic (MVL) has attracted attention, because it reduces the area and complexity of circuits when compared to binary logic. Carbon nanotube field effect transistors (CNFET) are a good candidate for implementing MVL logic circuits, since determining the threshold voltage value of CNFET is easily achievable by changing the diameter of the nanotubes which are placed under the transistor gate. In this paper, quaternary CNFET based 4–2 and 5–2 compressor cells have been proposed. The proposed cell designs were investigated using HSPICE simulator with the standard 32 nm CNFET technology under different operational conditions such as different temperatures, different load capacitances, and different supply voltages. Also the sensitivity to process variations and noise immunity of the proposed designs have been investigated. The proposed quaternary logic designs reduce the delay of the multi operand addition of arithmetic circuits by eliminating the carry propagation overhead.