Quasi-two-dimensional transmission line model (QTD-TLM) for planar ohmic contact studies

2002 ◽  
Vol 49 (1) ◽  
pp. 105-111 ◽  
Author(s):  
E.F. Chor ◽  
J. Lerdworatawee
Keyword(s):  
Transmission Line ◽  
Ohmic Contact ◽  
Two Dimensional ◽  
Transmission Line Model ◽  
Line Model

A New Electrical Model for Calculating the Sheet Resistance Parameter in Alloyed Ohmic Contacts

1994 ◽  
Vol 337 ◽  
Author(s):  
Geoffrey K. Reeves ◽  
H. Barry Harrison
Keyword(s):  
Transmission Line ◽  
Sheet Resistance ◽  
Ohmic Contact ◽  
Ohmic Contacts ◽  
Metal Layer ◽  
Semiconductor Layer ◽  
Specific Contact Resistance ◽  
Transmission Line Model ◽  
Line Model ◽  
Specific Contact

ABSTRACTThis paper briefly reviews the standard Transmission Line Model (TLM) commonly used to measure the specific contact resistance ρc and the sheet resistance Rsk beneath a planar ohmic contact. In the case of an alloyed ohmic contact, a more realistic three layer (Tri-Layer Transmission Line Model (TLTLM)) can be used for the analysis. This model is based on three layers (metal layer, alloyed semiconductor layer and the unalloyed semiconductor layer) and the two interfaces between them. By using appropriate TLTLM parameters, it is possible to calculate the sheet resistance Rsk that has been experimentally derived from the standard TLM. The new TLTLM model predicts that values of Rsk greater and less than Rsh (the unmodified epitaxial layer sheet resistance) are possible in agreement with experimentally reported observations.

Transmission-line model to design matching stage for light coupling into two-dimensional photonic crystals

2010 ◽  
Vol 35 (2) ◽  
pp. 115 ◽  
Author(s):  
Mehdi Miri ◽  
Amin Khavasi ◽  
Khashayar Mehrany ◽  
Bizhan Rashidian
Keyword(s):  
Photonic Crystals ◽  
Transmission Line ◽  
Two Dimensional ◽  
Transmission Line Model ◽  
Line Model ◽  
Light Coupling

Modified transmission line model to investigate non-Ohmic contact behavior and its application on GaN

2007 ◽  
Vol 101 (8) ◽  
pp. 086105 ◽  
Author(s):  
Yanjie Wang ◽  
Weixi Chen ◽  
Qiyuan Wei ◽  
Weihua Chen ◽  
Rui Li ◽  
...  
Keyword(s):  
Transmission Line ◽  
Ohmic Contact ◽  
Transmission Line Model ◽  
Line Model ◽  
Contact Behavior

Electrical Modelling and Characterisation of Alloyed Ohmic Contacts

1993 ◽  
Vol 318 ◽  
Author(s):  
Geoffrey K. Reeves ◽  
Patrick W. Leech ◽  
H. Barry Harrison
Keyword(s):  
Contact Resistance ◽  
Transmission Line ◽  
Ohmic Contact ◽  
Ohmic Contacts ◽  
Realistic Model ◽  
Specific Contact Resistance ◽  
Transmission Line Model ◽  
Semiconductor Interface ◽  
Line Model ◽  
Specific Contact

ABSTRACTThis paper briefly reviews the standard Transmission Line Model (TLM) commonly used to measure the specific contact resistance of a planar ohmic contact. It is proposed that in the case of a typical Au-Ge-Ni alloyed ohmic contact, a more realistic model would need to take into account the presence of the alloyed layer at the metal-semiconductor interface. An alternative is described which is based on three contact layers and the two interfaces between them, thus forming a Tri-Layer Transmission Line Model (TLTLM). Expressions are given for the contact resistance Rc and the contact end resistance Re of this structure, together with a current division factor, f. Values for the parameters of this model are inferred from experimentally reported values of Rc and Re for two types of contact.

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 .

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