3 edition of FDTD modeling of thin impedance sheets found in the catalog.
FDTD modeling of thin impedance sheets
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va.?
Written in English
|Statement||by Raymond Luebbers and Karl Kunz.|
|Series||NASA-CR -- 190105., NASA contractor report -- NASA CR-190105.|
|Contributions||Kunz, Karl S., United States. National Aeronautics and Space Administration.|
|The Physical Object|
FDTD cells and time steps may be excessively large with the very ﬁne spatial resolution, rendering the computation impracticable. In the past years, many works were conducted on accel-erating the FDTD method by means of subcell techniques  that permit objects or structures thinner than the FDTD cell to be accounted for. The thin wire. Electromagnetics Modeling in COMSOL • RF Module – High-frequency modeling • 2D or 3D modeling • Retrieve Impedance, Admittance, Current, Electric Field, Voltage, Stress-strain, Electric modeling of thin sheets of high permeability materials.
J.G. Maloney, G.S. SmithThe efficient modeling of thin material sheets in the finite-difference time-domain (FDTD) method IEEE Transactions on Antennas and Propagation, 40 (3) (), pp. Google ScholarCited by: FDTD and FEM/MOM Modeling of EM1 Resulting from a Trace Near a BCB Edge D. Berg, M. Tanaka*, Y. Ji, X. Ye, J. L. Drewniak, T. H. Hubing, R. E. DuBroff, and T. P. Van Doren Electromagnetic Compatibility Laboratory Department of Electrical and Computer Engineering University of Missouri-Rolla Rolla, MO
Buy FDTD Modeling of Metamaterials: Theory and Applications 1 by Yang Hao, Raj Mittra (ISBN: ) from Amazon's Book Store. Everyday low prices and free delivery on eligible : Yang Hao, Raj Mittra. Finite-Difference Time-Domain (FDTD) is a popular electromagnetic modeling techniques. It is easy to understand, easy to implement in software, and since it is a time-domain technique it can cover a wide frequency range with a single simulation run. The FDTD method belongs in the general class of differential time domain numerical modeling methods.
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Get this from a library. FDTD modeling of thin impedance sheets. [Raymond J Luebbers; Karl S Kunz; United States. National Aeronautics and Space Administration.]. FDTD Modeling of Thin Impedance Sheets i / by Raymond Luebbers and Karl Kunz Department of Electrical Engineering The Pennsylvania State University University Park, PA () Abstract Thin sheets of resistive or dielectric material are commonly encountered in radar cross section calculations.
Analysis of. Progress In Electromagnetics Research,P 1–30, FINITE DIFFERENCE TIME DOMAIN (FDTD) IMPEDANCE BOUNDARY CONDITION FOR THIN FINITE CONDUCTING SHEETS n.
Finite-difference time-domain or Yee's method (named after the Chinese American applied mathematician Kane S. Yee, born ) is a numerical analysis technique used for modeling computational electrodynamics (finding approximate solutions to the associated system of differential equations).Since it is a time-domain method, FDTD solutions can cover a wide.
A comparison is made between several different methods that have recently been proposed for efficiently modeling electrically thin material sheets in.
The finite-difference time-domain method in general curvilinear coordinates (FDTD-GCC), or nonorthogonal FDTD, permits the analysis of arbitrary curved structures with the use of a conformal mesh.
Light manipulation with flat and conformal inhomogeneous dispersive impedance sheets: an efficient FDTD modeling sheets in the finite-difference time-domain solver is presented. This unique proposed method can successfully the modeling procedure due to considering a thickness for the impedance sheet.
Hockanson et al., "FDTD Modeling of Thin Wires for Simulating Common-Mode Radiation from Structures with Attached Cables," Proceedings of the IEEE International Symposium on Electromagnetic Compatibility (, Atlanta, GA), pp.
Institute of Electrical and Electronics Engineers (IEEE), Aug Cited by: 6. And now, modeling their unique characteristics and behaviors in electromagnetic systems just got easier.
This one-stop resource gives engineers powerful finite-difference time-domain (FDTD) techniques for modeling metamaterials, complete with Cited by: This work is concerned with modeling perforated metal sheets whose apertures have diameters signi cantly smaller than the wavelength of radiation.
We suggest an original approach for computation of intrinsic impedance from the re ection and transmission coe cients obtained by FDTD simulation of the perforated sheet placed in a rectangular. Thin layer models are widely used in the finitedifference time-domain (FDTD) technique to efficiently model boundaries in multi-scale simulations as they significantly reduce simulation run-times and memory requirements.
These models often utilise surface impedance boundary conditions (SIBCs) to represent the material of the boundary. Understanding the FDTD Method. I once considered publishing a book on the finite-difference time-domain (FDTD) method based on notes I wrote for a course I taught.
But, why go through the hassle of publishing through a publisher when you can give away something for free. (Okay, I can think of several reasons, but I’m going to ignore them.).
Introduction to the Finite-Difference Time-Domain (FDTD) Method for Electromagnetics guides the reader through the foundational theory of the FDTD method starting with the one-dimensional transmission-line problem and then progressing to the solution of Maxwell's equations in.
"FDTD is presently the method of choice for solving most numerical electromagnetics studies. The Inan and Marshall book is a very thorough, yet readable, account of all the details of the method, very valuable for students and professionals alike, with problems included, ready for a by: This book deals with the EM analysis of closed microwave cavities based on a three-dimensional FDTD method.
The EM analysis is carried out for (i) rectangular microwave ovens and (ii) hybrid-cylindrical microwave autoclaves at GHz. The field distribution is first estimated inside domestic rectangular ovens in xy- yz- and zx-plane. computed with FDTD methods and compared to moment method input impedance results.
A simulation of. shielding enclosure with an attached cable demonstrates the utility of FDTD analysis in modeling common-mode radiation. INTRODUCTION HE. finite-difference time-domain (FDTD) method has been successfully applied to many electromagnetic scat-Cited by: electromagnetic modeling was made.
In this paper we use FDTD technique to theoretically simulate EM field strength and expected amount of microwave power absorbed by the weevil positioned inside a block of tree trunk inside a shorted waveguide section. BACKGROUND RPW is considered as the most dangerous and deadly pest of.
to introduce the loss necessary in the FDTD modeling. The type N bulkhead connector was located at x=17 cm, y=14 cm, z=15 cm. The finite-difference time-domain (FDTD) method was used to model the test enclosure excited by a terminated feed probe.
A cell size of cm × cm × cm was employed in the FDTD modeling. An enclosure with impedance interior surfaces is studied using the FDTD method. The FDTD simulation shows a wonderful depression of the resonance-related EMI signals in Cited by: 1.
Finite-difference time-domain (FDTD) is one of the primary computational electrodynamics modeling techniques available. Since it is a time-domain method, FDTD solutions can cover a wide frequency range with a single simulation run and. The electromagnetic modeling of thin apertures using the finite-difference time-domain technique [microf Finite difference schemes for long-time integration [microform] / Zigo Haras, Shlomo Ta'asan; FDTD modeling of thin impedance sheets [microform] / by .6 Modeling of Complex Structures Thin-Material Layers and Sheets Impedance Boundary Conditions Shell Element Formulation Thin Wires and Slots Thin Wires Thin Slots Lumped-Circuit Elements Coupled First-Order Equations Wave Equation Example FDTD Modeling of Absorbing Materials for EMI Applications Jianfeng Xu#1, Marina Y.
Koledintseva#2, Fig. 6 FDTD modeled and measured input impedance of the board with material in the short-circuit case: (a) real part, and (b) imaginary part.
materials will be used in the subcell thin-layer algorithm in EZ-FDTD which is currently under.