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Analysis of Random Variation in Subthreshold FGMOSFET 亚阈值FGMOSFET的随机变化分析
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-07-28 DOI: 10.1155/2016/3741250
R. Banchuin
The analysis of random variation in the performance of Floating Gate Metal Oxide Semiconductor Field Effect Transistor (FGMOSFET) which is an often cited semiconductor based electronic device, operated in the subthreshold region defined in terms of its drain current (), has been proposed in this research. is of interest because it is directly measurable and can be the basis for determining the others. All related manufacturing process induced device level random variations, their statistical correlations, and low voltage/low power operating condition have been taken into account. The analysis result has been found to be very accurate since it can fit the nanometer level SPICE BSIM4 based reference with very high accuracy. By using such result, the strategies for minimizing variation in can be found and the analysis of variation in the circuit level parameter of any subthreshold FGMOSFET based circuit can be performed. So, the result of this research has been found to be beneficial to the variability aware design of subthreshold FGMOSFET based circuit.
浮栅金属氧化物半导体场效应晶体管(FGMOSFET)是一种经常被引用的基于半导体的电子器件,工作在根据漏极电流()定义的亚阈值区域,本研究提出了对其性能随机变化的分析。是有趣的,因为它是直接可测量的,可以作为决定其他的基础。所有相关的制造过程引起的器件水平随机变化,它们的统计相关性,以及低电压/低功率操作条件都被考虑在内。分析结果与纳米级SPICE BSIM4基准的拟合精度非常高,分析结果非常准确。利用这一结果,可以找到最小化变化的策略,并可以分析任何基于亚阈值的FGMOSFET电路的电路电平参数的变化。研究结果对基于亚阈值FGMOSFET的变异性感知电路的设计是有益的。
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引用次数: 1
Color Calibration for Colorized Vision System with Digital Sensor and LED Array Illuminator 基于数字传感器和LED阵列光源的彩色视觉系统色彩校正
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-07-14 DOI: 10.1155/2016/7467165
Zhenmin Zhu, Ruichao Song, Hui Luo, Jun Xu, Shiming Chen
Color measurement by the colorized vision system is a superior method to achieve the evaluation of color objectively and continuously. However, the accuracy of color measurement is influenced by the spectral responses of digital sensor and the spectral mismatch of illumination. In this paper, two-color vision system illuminated by digital sensor and LED array, respectively, is presented. The Polynomial-Based Regression method is applied to solve the problem of color calibration in the sRGB and color spaces. By mapping the tristimulus values from RGB to sRGB color space, color difference between the estimated values and the reference values is less than . Additionally, the mapping matrix has proved a better performance in reducing the color difference, and it is introduced subsequently into the colorized vision system proposed for a better color measurement. Necessarily, the printed matter of clothes and the colored ceramic tile are chosen as the application experiment samples of our colorized vision system. As shown in the experimental data, the average color difference of images is less than . It indicates that a better performance of color measurement is obtained via the colorized vision system proposed.
彩色视觉系统测色是实现对色彩客观、连续评价的优越方法。然而,数字传感器的光谱响应和光照的光谱失配会影响颜色测量的精度。本文介绍了一种分别由数字传感器和LED阵列照明的双色视觉系统。采用基于多项式的回归方法解决了sRGB和色彩空间的色彩标定问题。通过将三刺激值从RGB色彩空间映射到sRGB色彩空间,得到的估计值与参考值的色差小于。此外,该映射矩阵在减小色差方面具有较好的效果,并被引入到彩色视觉系统中,以获得更好的颜色测量效果。有必要选择服装印刷品和彩色瓷砖作为彩色视觉系统的应用实验样本。实验数据显示,图像的平均色差小于。实验结果表明,所提出的彩色视觉系统具有较好的色彩测量性能。
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引用次数: 4
The Design and Thermal Reliability Analysis of a High-Efficiency K-Band MMIC Medium-Power Amplifier with Multiharmonic Matching 多谐波匹配高效k波段MMIC中功率放大器设计及热可靠性分析
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-05-19 DOI: 10.1155/2016/6295405
Yong-Heng Shang, Hui Xu, Jiongjiong Mo, Zhiyu Wang, Xiuqin Xu, Z. Tu, X. Zhang, H. Zheng, W. Chen, Faxin Yu
A new high-efficiency K-band MMIC medium-power amplifier (PA) is designed with multiharmonic matching using GaAs pHEMT process technology. It has an operation frequency centered at 26 GHz with a bandwidth of 2 GHz. A 20 dBm 1 dB-compression-point output power and 40% efficiency are achieved. A novel thermal reliability analysis method based on ICEPAK is proposed also to evaluate its thermal characteristic. The test result by using a QFI InfraScope™ infrared imaging system is compared with the simulation result. It agrees well with an accuracy within ±1°C differences, which reflects the advantages of the thermal analysis method with respect to accuracy and convenience for use.
采用砷化镓pHEMT工艺技术,设计了一种高效率k波段MMIC中功率放大器(PA)。它的工作频率以26ghz为中心,带宽为2ghz。压缩点输出功率为20dbm 1db,效率为40%。提出了一种新的基于ICEPAK的热可靠性分析方法来评价其热特性。采用QFI InfraScope™红外成像系统的测试结果与仿真结果进行了比较。在±1°C的误差范围内,它符合得很好,这反映了热分析法在准确性和使用便捷性方面的优势。
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引用次数: 4
A Survey on the Modeling of Magnetic Tunnel Junctions for Circuit Simulation 用于电路仿真的磁隧道结建模研究进展
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-05-18 DOI: 10.1155/2016/3858621
H. Lim, Seungjun Lee, Hyungsoon Shin
Spin-transfer torque-based magnetoresistive random access memory (STT-MRAM) is a promising candidate for universal memory that may replace traditional memory forms. It is expected to provide high-speed operation, scalability, low-power dissipation, and high endurance. MRAM switching technology has evolved from the field-induced magnetic switching (FIMS) technique to the spin-transfer torque (STT) switching technique. Additionally, material technology that induces perpendicular magnetic anisotropy (PMA) facilitates low-power operation through the reduction of the switching current density. In this paper, the modeling of magnetic tunnel junctions (MTJs) is reviewed. Modeling methods and models of MTJ characteristics are classified into two groups, macromodels and behavioral models, and the most important characteristics of MTJs, the voltage-dependent MTJ resistance and the switching behavior, are compared. To represent the voltage dependency of MTJ resistance, some models are based on physical mechanisms, such as Landau-Lifshitz-Gilbert (LLG) equation or voltage-dependent conductance. Some behavioral models are constructed by adding fitting parameters or introducing new physical parameters to represent the complex switching behavior of an MTJ over a wide range of input current conditions. Other models that are not based on physical mechanisms are implemented by simply fitting to experimental data.
基于自旋转移转矩的磁阻随机存取存储器(STT-MRAM)是一种很有前途的通用存储器,可以取代传统的存储器形式。它有望提供高速运行、可扩展性、低功耗和高耐用性。MRAM开关技术从场感应磁开关(FIMS)技术发展到自旋传递转矩开关(STT)技术。此外,诱导垂直磁各向异性(PMA)的材料技术通过降低开关电流密度来促进低功耗操作。本文对磁性隧道结(MTJs)的建模进行了综述。将MTJ特性的建模方法和模型分为宏观模型和行为模型两类,并对MTJ最重要的特性——电压相关的MTJ电阻和开关行为进行了比较。为了表示MTJ电阻的电压依赖性,一些模型基于物理机制,如Landau-Lifshitz-Gilbert (LLG)方程或电压依赖性电导。一些行为模型通过添加拟合参数或引入新的物理参数来表示大范围输入电流条件下MTJ的复杂开关行为。其他不基于物理机制的模型是通过简单地拟合实验数据来实现的。
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引用次数: 10
Corrigendum to “Analysis of the Coupling Coefficient in Inductive Energy Transfer Systems” “电感能量传递系统中耦合系数的分析”的勘误表
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-05-10 DOI: 10.1155/2016/5929347
Rafael Mendes Duarte, Gordana Klaric Felic
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引用次数: 43
Design of Wide-Band Bandpass Filter Using Composite Right/Left-Handed Transmission Line Structure 基于复合左右传输线结构的宽带带通滤波器设计
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-04-11 DOI: 10.1155/2016/6532010
Baoping Ren, Haiwen Liu, X. Guan, Pin Wen, Xiang Xiao, Zhewang Ma
A wide-band microstrip bandpass filter (BPF) based on the improved composite right/left-handed transmission line (CRLH-TL) structure is presented in this paper. Compared to the traditional CRLH-TL with via hole, the improved one is an all-planar structure, which owns the advantage of fabrication and loss. The equivalent lossless LC circuit model of the proposed structure is established. EM software Sonnet is adopted to design the wide-band filter with bandwidth of 1.4 GHz (from 1.9 GHz to 3.3 GHz). The circuit occupies only 20.6 × 12.8 mm2. Finally, the fabrication and measurement are implemented. A good agreement between simulation and measured results verifies the validity of the design methodology.
提出了一种基于改进型左右复合传输线结构的宽带微带带通滤波器(BPF)。与传统的通孔CRLH-TL相比,改进后的CRLH-TL是全平面结构,具有制造和损耗方面的优势。建立了该结构的等效无损LC电路模型。采用EM软件Sonnet设计带宽为1.4 GHz (1.9 GHz ~ 3.3 GHz)的宽带滤波器。电路面积仅为20.6 × 12.8 mm2。最后,进行了制作和测量。仿真结果与实测结果吻合较好,验证了设计方法的有效性。
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引用次数: 4
Design and Simulation of a 6-Bit Successive-Approximation ADC Using Modeled Organic Thin-Film Transistors 基于建模有机薄膜晶体管的6位连续逼近ADC的设计与仿真
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-03-15 DOI: 10.1155/2016/7201760
H. Pham, Thang Nguyen, L. Pham-Nguyen, H. Sakai, T. T. Dao
We have demonstrated a method for using proper models of pentacene P-channel and fullerene N-channel thin-film transistors (TFTs) in order to design and simulate organic integrated circuits. Initially, the transistors were fabricated, and we measured their main physical and electrical parameters. Then, these organic TFTs (OTFTs) were modeled with support of an organic process design kit (OPDK) added in Cadence. The key specifications of the modeled elements were extracted from measured data, whereas the fitting ones were elected to replicate experimental curves. The simulating process proves that frequency responses of the TFTs cover all biosignal frequency ranges; hence, it is reasonable to deploy the elements to design integrated circuits used in biomedical applications. Complying with complementary rules, the organic circuits work properly, including logic gates, flip-flops, comparators, and analog-to-digital converters (ADCs) as well. The proposed successive-approximation-register (SAR) ADC consumes a power of 883.7 µW and achieves an ENOB of 5.05 bits, a SNR of 32.17 dB at a supply voltage of 10 V, and a sampling frequency of about 2 KHz.
我们已经证明了一种方法,使用适当的模型的并五烯p沟道和富勒烯n沟道薄膜晶体管(TFTs),以设计和模拟有机集成电路。最初,晶体管被制造出来,我们测量了它们的主要物理和电气参数。然后,在Cadence中添加的有机工艺设计工具包(OPDK)的支持下,对这些有机TFTs (OTFTs)进行建模。从实测数据中提取模型要素的关键参数,选择拟合参数来复制实验曲线。仿真结果表明,TFTs的频率响应覆盖了生物信号的所有频率范围;因此,部署这些元件来设计用于生物医学应用的集成电路是合理的。符合互补规则的有机电路,包括逻辑门、触发器、比较器和模数转换器(adc)也能正常工作。所提出的逐次逼近寄存器(SAR) ADC功耗为883.7µW,在电源电压为10 V时,ENOB为5.05位,信噪比为32.17 dB,采样频率约为2 KHz。
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引用次数: 6
Bus Implementation Using New Low Power PFSCL Tristate Buffers 使用新型低功耗PFSCL三态缓冲器的总线实现
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-02-29 DOI: 10.1155/2016/4517292
N. Pandey, Bharat Choudhary, K. Gupta, Ankit Mittal
This paper proposes new positive feedback source coupled logic (PFSCL) tristate buffers suited to bus applications. The proposed buffers use switch to attain high impedance state and modify the load or the current source section. An interesting consequence of this is overall reduction in the power consumption. The proposed tristate buffers consume half the power compared to the available switch based counterpart. The issues with available PFSCL tristate buffers based bus implementation are identified and benefits of employing the proposed tristate buffer topologies are put forward. SPICE simulation results using TSMC 180 nm CMOS technology parameters are included to support the theoretical formulations. The performance of proposed tristate buffer topologies is examined on the basis of propagation delay, output enable time, and power consumption. It is found that one of the proposed tristate buffer topology outperforms the others in terms of all the performance parameters. An examination of behavior of available and the proposed PFSCL tristate buffer topologies under parameter variations and mismatch shows a maximum variation of 14%.
本文提出了一种适合总线应用的新型正反馈源耦合逻辑(PFSCL)三态缓冲器。所提出的缓冲器使用开关来达到高阻抗状态并修改负载或电流源部分。这样做的一个有趣的结果是总体上降低了功耗。与可用的基于交换机的缓冲器相比,建议的三状态缓冲器消耗的功率只有一半。指出了现有的基于PFSCL三状态缓冲区的总线实现存在的问题,并提出了采用所提出的三状态缓冲区拓扑的好处。采用台积电180nm CMOS工艺参数的SPICE仿真结果支持理论公式。基于传播延迟、输出使能时间和功耗,对所提出的三状态缓冲拓扑的性能进行了检查。研究发现,三状态缓冲拓扑在所有性能参数方面都优于其他拓扑。在参数变化和不匹配的情况下,对现有和提议的PFSCL三态缓冲拓扑的行为进行了检查,结果显示最大变化为14%。
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引用次数: 5
Energy-Aware Low-Power CMOS LNA with Process-Variations Management 具有工艺变化管理的能量感知低功耗CMOS LNA
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-02-18 DOI: 10.1155/2016/8351406
Jorge L. Gonzalez, R. Moreno, J. C. Cruz, D. Vázquez
A reconfigurable low-noise amplifier (LNA) with digitally controllable gain and power consumption is presented. This architecture allows increasing power consumption only when required, that is, to improve LNA’s radiofrequency performance at extreme communication-channel conditions and/or to counteract the effect of process, voltage, and temperature variations. The proposed design leads to significant power saving when a relaxed operation is acceptable. The LNA is implemented in a 130 nm 1.2 V CMOS technology for a 2.4 GHz IEEE-802.15.4 application. Simulated LNA performance (taking into account the worst cases under process variations) is comparable to recently published works.
提出了一种增益和功耗数字可控的可重构低噪声放大器。这种架构只允许在需要时增加功耗,也就是说,在极端通信信道条件下提高LNA的射频性能和/或抵消工艺、电压和温度变化的影响。当可接受放松操作时,所建议的设计可显著节省电力。LNA采用130 nm 1.2 V CMOS技术实现,适用于2.4 GHz IEEE-802.15.4应用。模拟的LNA性能(考虑到过程变化下的最坏情况)与最近发表的作品相当。
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引用次数: 0
A Novel Inverter Topology for Single-Phase Transformerless PV System 一种单相无变压器光伏系统逆变器拓扑结构
IF 0.4 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2016-01-13 DOI: 10.1155/2016/1962438
H. Cao
Transformerless photovoltaic (PV) power system is very promising due to its low cost, small size, and high efficiency. One of its most important issues is how to prevent the common mode leakage current. In order to solve the problem, a new inverter is proposed in this paper. The system common mode model is established, and the four operation modes of the inverter are analyzed. It reveals that the common mode voltage can be kept constant, and consequently the leakage current can be suppressed. Finally, the experimental tests are conducted. The experimental results verify the effectiveness of the proposed solution.
无变压器光伏发电系统具有成本低、体积小、效率高等优点,具有广阔的应用前景。其最重要的问题之一是如何防止共模漏电流。为了解决这一问题,本文提出了一种新型逆变器。建立了系统共模模型,分析了逆变器的四种工作模式。结果表明,共模电压可以保持恒定,从而可以抑制泄漏电流。最后进行了实验测试。实验结果验证了该方法的有效性。
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引用次数: 3
期刊
Active and Passive Electronic Components
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