scholarly journals A performance-enhanced planar Schottky diode for Terahertz applications: an electromagnetic modeling approach

2017 ◽  
Vol 9 (10) ◽  
pp. 1905-1913 ◽  
Author(s):  
Amir Ghobadi ◽  
Talha Masood Khan ◽  
Ozan Onur Celik ◽  
Necmi Biyikli ◽  
Ali Kemal Okyay ◽  
...  
Keyword(s):  
Schottky Diode ◽  
Parameter Extraction ◽  
Design Parameters ◽  
Circuit Parameter ◽  
Electromagnetic Modeling ◽  
Deep Trench ◽  
Modeling Approach ◽  
Lumped Equivalent Circuit ◽  
Model Device ◽  
A Performance

In this paper, we present the electromagnetic modeling of a performance-enhanced planar Schottky diode for applications in terahertz (THz) frequencies. We provide a systematic simulation approach for analyzing our Schottky diode based on finite element method and lumped equivalent circuit parameter extraction. Afterward, we use the developed model to investigate the effect of design parameters of the Schottky diode on parasitic capacitive and resistive elements. Based on this model, device design has been improved by deep-trench formation in the substrate and using a closed-loop junction to reduce the amount of parasitic capacitance and spreading resistance, respectively. The results indicate that cut-off frequency can be improved from 4.1 to 14.1 THz. Finally, a scaled version of the diode is designed, fabricated, and well characterized to verify the validity of this modeling approach.

FIT/PVL circuit-parameter extraction for general electromagnetic devices

2000 ◽  
Vol 36 (4) ◽  
pp. 1421-1425 ◽  
Author(s):  
D. Ioan ◽  
T. Weiland ◽  
T. Wittig ◽  
I. Munteanu
Keyword(s):  
Parameter Extraction ◽  
Circuit Parameter ◽  
Electromagnetic Devices

A Performance-Based Representation for Engineering Design

1999 ◽  
Author(s):  
Liang Zhu ◽  
David Kazmer
Keyword(s):  
Engineering Design ◽  
Design Solution ◽  
Design Parameters ◽  
Feasible Region ◽  
Pareto Optimal Solutions ◽  
Optimal Solutions ◽  
Performance Orientation ◽  
Practical Design ◽  
Current Engineering ◽  
A Performance

Abstract A performance-based representation is presented, which uses the Performance Orientation Chart (POC) to aid the designer throughout an interactive design process. Assuming that all performance attributes can be expressed as functions of the design parameters, three types of graphical matrix are shown in the POC: 1) The design form depicts the performance attributes varying with the correspondent design parameters; 2) The performance dependency addresses the trade-off information among the multiple specifications based on Pareto optimal solutions; 3) The parameter constraint space defines the feasible region of the design, parameters within the, active specification limits. Guided by these graphical matrices, the designer can interactively develop the design solution to satisfy multiple specifications. The methodology was applied to a practical design problem to explicate how the POC can help the designer acquire a satisfying design solution with extensive confidence. Finally, the discussion, indicates that the performance-based representation is significantly compatible with other current engineering design methodologies.

Computation of the Usage Contexts Coverage of a Jigsaw With CSP Techniques

2010 ◽  
Author(s):  
Bernard Yannou ◽  
Jiliang Wang ◽  
Pierre-Alain Yvars
Keyword(s):  
Constraint Satisfaction ◽  
Performance Prediction ◽  
Constraint Satisfaction Problem ◽  
Design Parameters ◽  
A Value ◽  
Product Service ◽  
Value Sets ◽  
Usage Context ◽  
A Performance

In the context of the Usage Context Based Design (UCBD) of a product-service, a taxonomy of variables is suggested to setup the link between the design parameters of a product-service and the part of a set of expected usages that may be covered. This paper implements a physics-based model to provide a performance prediction for each usage context that also depends on the user skill. The physics describing the behavior and consequently the performances of a jigsaw are established. Simulating numerically the usage coverage is non trivial for two reasons: the presence of circular references in physical relations and the need to efficiently propagate value sets or domains instead of accurate values. For these two reasons, we modeled the usage coverage issue as a Constraint Satisfaction Problem and we result in the expected service performances and a value of a covered usage indicator.

scholarly journals Equivalent circuit parameter extraction of low‐capacitance high‐damping PTs

2020 ◽  
Vol 56 (7) ◽  
pp. 347-350 ◽  
Author(s):  
J. Forrester ◽  
L. Li ◽  
J.N. Davidson ◽  
M.P. Foster ◽  
D.A. Stone ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Parameter Extraction ◽  
Circuit Parameter ◽  
Low Capacitance ◽  
Equivalent Circuit Parameter

Modeling Approach for the Electrodynamics of Multilayer DE Stack-Transducers

2016 ◽  
Author(s):  
Thorben Hoffstadt ◽  
Philip Meier ◽  
Jürgen Maas
Keyword(s):  
Spatial Distribution ◽  
Field Distribution ◽  
Electrical Network ◽  
Design Parameters ◽  
Electrical Behavior ◽  
Electrical Parameters ◽  
Static Behavior ◽  
Design Rules ◽  
Modeling Approach ◽  
Lumped Parameters

In most cases the electrical behavior of dielectric elastomer (DE) transducers is modeled by an equivalent circuit with lumped electrical parameters. Here, the capacitance is obtained under consideration of the active area of the whole DE transducer, while additional parallel and series resistances model the losses in the dielectric and the electrode respectively. Since this represents a quite simple modeling approach it is very common. However, in general a DE transducer has a certain spatial distribution depending on the design of the considered transducer. Thus, a model with lumped parameters might be inaccurate and does not take into account the field-distribution within the DE transducer. Since no analytical expression of the field-distribution can be derived by solving the partial differential equations for diagonal-edge contacts, within this contribution an electrical network model for a multilayer DE stack-transducer is presented. This model takes into account the influence of the contacting of each single transducer film as well as the electrical interaction of these films and their spatial distribution. Based on this model the influence of different design parameters can be investigated, resulting in design rules for the considered transducers with both optimized transient and static behavior.

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