scholarly journals An Improved Analysis for the Harmonic Distortion of MOS Voltage-Controlled-Resistors

1997 ◽  
Vol 19 (4) ◽  
pp. 253-260
Author(s):  
Muhammad Taher Abuelma'atti
Keyword(s):  
Fourth Order ◽  
Harmonic Distortion ◽  
Voltage Characteristic ◽  
Current Voltage Characteristic ◽  
Mos Transistor ◽  
Current Voltage ◽  
Order Polynomial ◽  
Polynomial Expression ◽  
Analytical Expressions ◽  
Fourth Order Polynomial

In this paper, a fourth-order polynomial expression is obtained for the nonlinear current-voltage characteristic of a MOS transistor operating in the triode region. Using this expression, closed-form expressions are obtained for the second-, third- and fourth-harmonic distortion of a MOS voltage-controlled- resistors. The analytical expressions obtained in this paper can be used for a quantitative study of the effect of different parameters of the performance of MOS voltage-controlled-resistors.

scholarly journals Development of a solar element model using the method of fractal geometry theory

2021 ◽  
Vol 3 (8(111)) ◽  
pp. 75-89
Author(s):  
Pavlo Budanov ◽  
Ihor Kyrysov ◽  
Kostiantyn Brovko ◽  
Dmytro Rudenko ◽  
Pavlo Vasiuchenko ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Solar Cell ◽  
Fractal Geometry ◽  
Geometric Model ◽  
Voltage Characteristic ◽  
Current Voltage Characteristic ◽  
The Real ◽  
Current Voltage ◽  
Analytical Expressions ◽  
Real Area

It is shown that in the existing models of the solar cell, assumptions were made about the ideally smooth surface topography, which had a significant impact on the calculation of the output parameters. It is proposed to take into account the real working area of the receiving surface of the solar cell to improve the accuracy, linearity and stability of the current-voltage characteristics. A geometric model of the structure of the receiving surface of a solar cell has been developed, which describes and takes into account geometric changes in the structure of a semiconductor conducting layer, in the presence of damaging defects in the form of local inhomogeneities, micropores and macrocracks. It was found that the receiving surface with damaging defects is a porous inhomogeneous structure and has fractal properties: self-similarity, invariance, scalability. It is proposed to determine the real working area, to use the method of the theory of fractal geometry and, as an effective quantitative parameter for assessing the change in fractal structure, to choose the value of the fractal dimension. The obtained analytical expressions for the improved model establish the relationship between the output parameters and determine the degree of filling of the current-voltage characteristic for the output power and efficiency. The computational experiment showed that the real area can be much less than the geometric area of the topological relief and is quantitatively related to the change in fractal dimension in the range from 2.31 to 2.63. The obtained data on the real area, when solving analytical expressions for the solar cell model, play an important role in ensuring the stability and linearity of the current-voltage characteristic, increasing its accuracy up to 5 %.

Development and Current-Voltage Characteristic of Arc on AMF Contacts at Different Opening Speeds

2021 ◽  
pp. 1-7
Author(s):  
Alexander A. Logachev ◽  
Irina N. Poluyanova ◽  
Konstantin K. Zabello ◽  
Sergey M. Shkol'nik
Keyword(s):  
Voltage Characteristic ◽  
Current Voltage Characteristic ◽  
Current Voltage

Current oscillations and N-shaped current–voltage characteristic in the manganite Sm1−xSrxMnO3

2004 ◽  
Vol 30 (9) ◽  
pp. 736-738
Author(s):  
I. K. Kamilov ◽  
K. M. Aliev ◽  
Kh. O. Ibragimov ◽  
N. S. Abakarova
Keyword(s):  
Voltage Characteristic ◽  
Current Voltage Characteristic ◽  
Current Voltage ◽  
Current Oscillations

Effects of different tailoring graphene electrodes on the rectification and negative differential resistance of molecular devices

2018 ◽  
Vol 32 (29) ◽  
pp. 1850323
Author(s):  
Ting Ting Zhang ◽  
Cai Juan Xia ◽  
Bo Qun Zhang ◽  
Xiao Feng Lu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Electronic Transport ◽  
Negative Differential Resistance ◽  
Density Functional ◽  
Graphene Nanoribbons ◽  
Differential Resistance ◽  
Voltage Characteristic ◽  
Molecular Devices ◽  
Current Voltage Characteristic ◽  
Functional Theory ◽  
Current Voltage

The electronic transport properties of oligo p-phenylenevinylene (OPV) molecule sandwiched with symmetrical or asymmetric tailoring graphene nanoribbons (GNRs) electrodes are investigated by nonequilibrium Green’s function in combination with density functional theory. The results show that different tailored GNRs electrodes can modulate the current–voltage characteristic of molecular devices. The rectifying behavior can be observed with respect to electrodes, and the maximum rectification ratio can reach to 14.2 in the asymmetric AC–ZZ GNRs and ZZ–AC–ZZ GNRs electrodes system. In addition, the obvious negative differential resistance can be observed in the symmetrical AC-ZZ GNRs system.

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