Statistical modeling of transmission line model test structures. II. TLM test structure with four or more terminals: a novel method to characterize nonideal planar contacts in presence of inhomogeneities

1990 ◽  
Vol 37 (11) ◽  
pp. 2361-2380 ◽  
Author(s):  
L. Gutai
Keyword(s):  
Transmission Line ◽  
Statistical Modeling ◽  
Model Test ◽  
Test Structure ◽  
Transmission Line Model ◽  
Line Model ◽  
Novel Method

Modified Linear Transmission Line Model Test Structure for Determining Specific Contact Resistance

MRS Advances ◽  
2016 ◽  
Vol 1 (2) ◽  
pp. 157-162
Author(s):  
G.K. Reeves ◽  
Y. Pan ◽  
P.W. Leech ◽  
A.S. Holland
Keyword(s):  
Contact Resistance ◽  
Transmission Line ◽  
Model Test ◽  
Element Model ◽  
Test Structure ◽  
Specific Contact Resistance ◽  
Transmission Line Model ◽  
Line Model ◽  
Linear Pattern ◽  
Specific Contact

ABSTRACTA modified design of the transmission line model test structure uses the simple calculation of specific contact resistance, ρc, based on a two contact linear pattern but without the requirement of a mesa etch. This modified structure uses a linear TLM with semicircular terminations at each end. The function of the semicircular terminations is to confine the fringing fields at the ends of the linear TLM contacts. Simple analytical equations for determining ρc have been developed on the basis of the modified linear TLM pattern. These calculations have shown good agreement with a finite element model (FEM) of the modified TLM test structure using typical parameters for metal/ SiC contacts.

scholarly journals Analytical test structure model for determining lateral effects of tri-layer ohmic contact beyond the contact edge

2017 ◽  
Vol 30 (2) ◽  
pp. 257-265
Author(s):  
Neelu Shrestha ◽  
Geoffrey Reeves ◽  
Patrick Leech ◽  
Yue Pan ◽  
Anthony Holland
Keyword(s):  
Transmission Line ◽  
Analytical Model ◽  
Metal Layer ◽  
Test Structure ◽  
Analytical Models ◽  
Transmission Line Model ◽  
Line Model ◽  
Contact Test ◽  
Voltage Drops ◽  
Specific Contact

Contact test structures where there is more than one non-metal layer, are significantly more complex to analyse compared to when there is only one such layer like active silicon on an insulating substrate. Here, we use analytical models for complex test structures in a two contact test structure and compare the results obtained with those from Finite Element Models (FEM) of the same test structures. The analytical models are based on the transmission line model and the tri-layer transmission line model in particular, and do not include vertical voltage drops except for the interfaces. The comparison shows that analytical models for tri-layer contacts to dual active layers agree well with FEM when the Specific Contact Resistances (SCR) of the contact interfaces is a significant part of the total resistance. Overall, there is a broad range of typical dual-layer-to-TLTLM contacts where the analytical model works. The insight (and quantifying) that the analytical model gives on the effect of the presence of the contact, on the distribution of current away from the contact is shown.

Model Order Reduction of Transmission Line Model

2020 ◽  
Vol 19 ◽  
Keyword(s):  
Transmission Line ◽  
Large Scale ◽  
Original System ◽  
Reduced Order Model ◽  
Benchmark Problems ◽  
Transmission Line Model ◽  
Order Model ◽  
Line Model ◽  
Reduced Order ◽  
Numerical Effort

Transmission Line model are an important role in the electrical power supply. Modeling of such system remains a challenge for simulations are necessary for designing and controlling modern power systems.In order to analyze the numerical approach for a benchmark collection Comprehensive of some needful real-world examples, which can be utilized to evaluate and compare mathematical approaches for model reduction. The approach is based on retaining the dominant modes of the system and truncation comparatively the less significant once.as the reduced order model has been derived from retaining the dominate modes of the large-scale stable system, the reduction preserves the stability. The strong demerit of the many MOR methods is that, the steady state values of the reduced order model does not match with the higher order systems. This drawback has been try to eliminated through the Different MOR method using sssMOR tools. This makes it possible for a new assessment of the error system Offered that the Observability Gramian of the original system has as soon as been thought about, an H∞ and H2 error bound can be calculated with minimal numerical effort for any minimized model attributable to The reduced order model (ROM) of a large-scale dynamical system is essential to effortlessness the study of the system utilizing approximation Algorithms. The response evaluation is considered in terms of response constraints and graphical assessments. the application of Approximation methods is offered for arising ROM of the large-scale LTI systems which consist of benchmark problems. The time response of approximated system, assessed by the proposed method, is also shown which is excellent matching of the response of original system when compared to the response of other existing approaches .

Transmission line model for superconducting coplanar lines

1990 ◽  
Vol 26 (2) ◽  
pp. 148 ◽  
Author(s):  
D. Kinowski ◽  
C. Seguinot ◽  
P. Pribetich ◽  
P. Kennis
Keyword(s):  
Transmission Line ◽  
Transmission Line Model ◽  
Line Model
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