A novel skin-effect based surface impedance model for accurate broadband characterization of interconnects with method of moments

2010 ◽  
Author(s):  
Mohammed A. I. Al-Qedra ◽  
Vladimir I. Okhmatovski
Keyword(s):  
Method Of Moments ◽  
Surface Impedance ◽  
Skin Effect ◽  
Impedance Model

scholarly journals A mixed thinning based geometric INAR(1) model

Filomat ◽  
2017 ◽  
Vol 31 (13) ◽  
pp. 4009-4022 ◽  
Author(s):  
Aleksandar Nastic ◽  
Miroslav Ristic ◽  
Ana Janjic
Keyword(s):  
Parameter Estimation ◽  
Method Of Moments ◽  
Negative Binomial ◽  
Real Life ◽  
Binomial Thinning ◽  
Conditional Least Squares ◽  
Counting Data ◽  
Parameter Estimators ◽  
Thinning Operator

In this article a geometrically distributed integer-valued autoregressive model of order one based on the mixed thinning operator is introduced. This new thinning operator is defined as a probability mixture of two well known thinning operators, binomial and negative binomial thinning. Some model properties are discussed. Method of moments and the conditional least squares are considered as possible approaches in model parameter estimation. Asymptotic characterization of the obtained parameter estimators is presented. The adequacy of the introduced model is verified by its application on a certain kind of real-life counting data, while its performance is evaluated by comparison with two other INAR(1) models that can be also used over the observed data.

Further to the paper “Application of the impedance model of de Levie for the characterization of porous electrodes” by Barcia et al. [Electrochim. Acta 47 (2002) 2109]

2006 ◽  
Vol 51 (10) ◽  
pp. 2096-2097 ◽  
Author(s):  
O.E. Barcia ◽  
S. Cattarin ◽  
E. D’Elia ◽  
I. Frateur ◽  
O.R. Mattos ◽  
...  
Keyword(s):  
Porous Electrodes ◽  
Impedance Model

scholarly journals Single-band Zigzag Dipole Artificial Magnetic Conductor

2012 ◽  
Vol 58 (1) ◽  
Author(s):  
M. Abu ◽  
M. K. A. Rahim
Keyword(s):  
Computer Simulation ◽  
Electric Field ◽  
Surface Impedance ◽  
Single Band ◽  
Uhf Rfid ◽  
Magnetic Conductor ◽  
Artificial Magnetic Conductor ◽  
Rfid Applications ◽  
Phase Reflection

A new Artificial Magnetic Conductor (AMC) structure called zigzag dipole is discussed. Based on the 0.92GHz straight dipole AMC, the zigzag dipole AMC operating at 0.92GHz, 2.45GHz and 5.8GHz are carried out using TLC-32 and RF-35 boards. This AMC structure is designed based on the characterization of a unit cell using a transient solver of Computer Simulation Technology (CST) software. The simulated results such as the reflection phase, reflection magnitude, surface impedance, bandgap and electric field for each single-band AMC are presented in this paper. From the results gained it shows that, the bandwidth of the AMC will increase when the frequency is increased. It is also proved that these AMC are not providing the bandgap at their resonance. The zigzag dipole AMC is carried out to minimize the AMC size and to be suitable for UHF RFID applications.

scholarly journals Application of the Shifted Frequency Internal Equivalence to Two Dimensional Lossy Objects

2019 ◽  
Vol 8 (2) ◽  
pp. 126-133
Author(s):  
B. Aydemir ◽  
A. Köksal
Keyword(s):  
Method Of Moments ◽  
Electromagnetic Waves ◽  
Skin Effect ◽  
Scattering Problem ◽  
New Method ◽  
Two Dimensional ◽  
Electrical Permittivity ◽  
Conductivity Loss ◽  
Conductive Media

Performance of a new method, Shifted Frequency Internal Equivalence (SFIE) is studied in the analysis of scattering from two dimensional lossy objects. This method finds the solution of a wideband scattering problem faster than classical approaches.By introducing conductivity, loss shows itself as imaginary electrical permittivity. Changing conductivity also changes the distribution of electromagnetic waves and modifies RCS plots. In this study homogeneous and inhomogeneous conductive media are investigated to widen the usage of SFIE method. By increasing conductivity skin effect phenomenon is observed, electrical dimensions are decreased and RCS plots are flattened as expected.Numerical results obtained by SFIE are compared to the ones obtained by Method of Moments and the differences are shown.

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