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Novel quantum‐dot cellular automata implementation of flip‐flop and phase‐frequency detector based on nand‐nor‐inverter gates
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-06-25 , DOI: 10.1002/cta.2825 Hani Alamdar 1 , Gholamreza Ardeshir 1 , Mohammad Gholami 2
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-06-25 , DOI: 10.1002/cta.2825 Hani Alamdar 1 , Gholamreza Ardeshir 1 , Mohammad Gholami 2
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CMOS technology faces fundamental challenges such as frequency and power consumption due to the impossibility of further reducing dimensions. For these reasons, researchers have been thinking replacement of this technology with other technologies such as quantum‐dot cellular automata (QCA) technology. Many studies have been done to design digital circuits using QCA technology. Phase‐frequency detector (PFD) is one of the main blocks in electrical and communication circuits. In this paper, a novel structure for PFDs in QCA technology is proposed. In the proposed design, the novel D flip‐flop (D‐FF) with reset ability is used. The D‐FF is designed by the proposed D latch which is based on nand‐nor‐inverter (NNI) and an inverter gate. This proposed D latch has 22 cells and 0.5 clock cycle latency and 0.018‐μm2 area. The inverter gate of the D‐FF has output signal with high polarization level and lower area than previous inverters, and the NNI gate of the D‐FF is a universal gate. The proposed PFD has 141 cells, 0.17‐μm2 occupied area, and two clock cycle latency that is smaller compared with PFD and is based on common inverter and majority gates.
中文翻译：
基于nand-nor-反相器门的触发器和相频检测器的新型量子点元胞自动机实现
由于无法进一步减小尺寸，CMOS技术面临诸如频率和功耗等基本挑战。由于这些原因，研究人员一直在考虑用其他技术（例如量子点细胞自动机（QCA）技术）来代替该技术。已经进行了许多研究来使用QCA技术设计数字电路。鉴频检测器（PFD）是电气和通信电路中的主要模块之一。在本文中，提出了一种新颖的QCA技术中的PFD结构。在建议的设计中，使用了具有复位功能的新型D触发器（D-FF）。D-FF由建议的D锁存器设计，该锁存器基于Nand-nor-反相器（NNI）和反相器门。该提出的d锁存器具有22个细胞和0.5个时钟周期的等待时间和0.018微米2区。D-FF的反相器门的输出信号具有比以前的反相器高的极化电平和较小的面积，并且D-FF的NNI门是通用门。所提出的PFD具有141个细胞，0.17-μm的2占据的面积，并且两个时钟周期的等待时间与PFD相比是较小的，并且基于共同的反相器和多数栅极。
更新日期：2020-06-25
中文翻译：
基于nand-nor-反相器门的触发器和相频检测器的新型量子点元胞自动机实现
由于无法进一步减小尺寸，CMOS技术面临诸如频率和功耗等基本挑战。由于这些原因，研究人员一直在考虑用其他技术（例如量子点细胞自动机（QCA）技术）来代替该技术。已经进行了许多研究来使用QCA技术设计数字电路。鉴频检测器（PFD）是电气和通信电路中的主要模块之一。在本文中，提出了一种新颖的QCA技术中的PFD结构。在建议的设计中，使用了具有复位功能的新型D触发器（D-FF）。D-FF由建议的D锁存器设计，该锁存器基于Nand-nor-反相器（NNI）和反相器门。该提出的d锁存器具有22个细胞和0.5个时钟周期的等待时间和0.018微米2区。D-FF的反相器门的输出信号具有比以前的反相器高的极化电平和较小的面积，并且D-FF的NNI门是通用门。所提出的PFD具有141个细胞，0.17-μm的2占据的面积，并且两个时钟周期的等待时间与PFD相比是较小的，并且基于共同的反相器和多数栅极。
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