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# Fdtd Modelling

20 Threads found on edaboard.com: Fdtd Modelling

## TF/SF Taflove Computer Implementation

I am trying to implement my own 3D fdtd based on Taflove's book, however I'm running into trouble with my TF/SF implementation. I am attempting to model free space, with no scatterers, yet I am getting significant fields outside the Total Field region. I am modelling a 10 GHz sine wave with a deltax of 0.002. I don't expect you to debug my

## Modelling characteristics using FDTD

modelling characteristics using fdtd I am modelling the effect of soil heaps on radio signals (Think radio communication between mine dumps.) and would like to know what permittivity, permeability and electrical conductivity values one should use in the fdtd. I am currently making some loose assumptions on (...)

## FDTD soil characteristics

I am modelling the effect of soil heaps on radio signals (Think radio communication between mine dumps.) and would like to know what permittivity, permeability and electrical conductivity values one should use in the fdtd. I am currently making some loose assumptions on conductivity from a Geophysical book by Telford. What to do about the permittiv

## Performance of the FDTD and lossy material

Does anyone have any reference to articles dicussing performance related issues when modelling lossy material with fdtd, not just with the boundary conditions. According to the conventional fdtd formulation I have assumed that loss is well managed by the coefficients of the fdtd equations, yet this may not be the case (...)

## Design and developement of a 3D Cylindrical FDTD Code - Optimization

First of all I've managed to build from scratch a 3D fdtd code for modelling waves travelling in cylindrical waveguides. The problem comes when I have to calculate nr, nf and nz where ni; i=r,f,z are the spatial steps in the computational grid. I use a modified version of an earlier adoption of the same issue, regarding cartesian coordinates. So, t

## Microstrip Filters : Air ,PMC or PEC side walls?

as ashish said the CST base on fdtd but its not a full fdtd The CST time domain solver is based on FIT, which is closely related to fdtd. CST also offer other solvers (FEM, MOM etc.) But the topic of boundary conditions is not related to the solver engine. It is related to modelling metal boundaries (PEC) for sid

## 1d fdtd lossy line modelling question

Hi, I am working on hwks from a course work. it's modelling a 1d fdtd transmission, but with the loss terms. Is there a specific ways to discretize a loss terms? I am implementing them in matlab. Please let me know. Thanks, 53744

## Transmission line modeling using 1D FEM

Hi, I want model a simple transmission line using FEM and i want to write a code in MATLAB. so can any one tell me a good reference of modelling equations. I have Coded 1D fdtd for a transmission line modelling using the book "Computational Electromagnetics" by David B. Davidson but For 1D FEM case this refence doesnot explain the (...)

## 3D nanoporous modelling in FDTD

Hi all dears Can anybody help me , i dont know how to simulate a 3D nanoporous media with fdtd ? I use CAMFR software to simulate light prorogation inside a nanoporous medium. any suggestion can be a big help cheers.

## SIW ( substrate integrated waveguide)

For the SIW structure, full 3D EM simulator, like HFSS (FEM), CST (fdtd) should be used. The 2.5D simulator like IE3D, Momentum, Sonnet should not be used, since the the modelling will be more complicated and inefficient.

## request for two dimentional FDTD code

Hi; I want to do numerical modelling of wave propagation from ocean to land by using fdtd and I couldn't find any code could you mind please any one help me to get it?I study somewhere that by name of TRES but no one knews about it do you know?thanks alot

## matlab code for RDRA by using FDTD technique

i need MATLAB code for rectangular dielectric resonator antenna modelling using fdtd technique. plz help me .

## Which software is best suited for designing a corrugated horn antenna ?

Hello horzcat, I have used Vector Fields Concerto fdtd Solver for such problems, found very useful for modelling & analysing such structures... One of view as a PDF doc attached just for your reference... ---manju---

## EBG Simulation using EMPIRE software

hi, I've tried to simulate an ebg structure using empire software. I used a plane wave excitation and near field to far field transformation as described by literature 'fdtd modelling of finite size ebg structure' in empire website. But I receives an error 'ValueError: bad marshal data'. Somebody please help me suggesting what is wrong with my sim

## Opinions about Agilent AMDS modelling tool

A 3-D dedicated design and modeling tool for antennas and antenna systems. It's based on fdtd. Has someone tasted it? the link:

## question in FDTD modelling

Dear friends: I am interested in modelling PCF using fdtd. I have an important question. I want to calculate the effective index using fdtd program. A lot of papers say that we must take fst fourier transform to the output of the fdtd program then getting effective index. Could any one explain to me how to get effective (...)

## Final Project:Modelling of GPR antenna with-I FDTD need help

Please, if any body can help me with ideas on how to go about modelling and simulation of a Ground Penetrating radar antenna tranciever I will be very grateful.I am using fdtd method and I have a general idea of what is involved, but I need help in starting the project. For example, I need to know what type of antenna I am going to use, the reason

## Channel Modelling Problem

Hello; Not sure about the exact nature of the problem, just a suggestion. You could use the fdtd method for modelling the channel. try to find articles on modelling water as media in fdtd. This could solve your problem, but could be very lengthy

## Modelling left-handed materials using FDTD method

Remcom claims that its xfdtd can handle LHM. There is a sample on their website.

## Looking for some papers (EuMC2003)

I have some paper from EuMC 2003. Can anyone send me following papers for me W. Thiel, K. Sabet and L.P.B. Kateti, " A Hybrid MoM/fdtd Approach for an Efficient modelling of Complex Antenna on Mobile Platforms" H. Oraizi, S. Hosseinzadeh, " The effect of Atmospheric Duct on the Modern OFDM-Based Digital Broadcasting Systems" C. Plapous ,J.