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33 Threads found on edaboard.com: Fdtd Far
hi. I have a basic question in fdtd.I know formula and concepts of Huygens surface and I know formulas of near field to far field transformation (NFTFF) and also I can write matlab codes for this purpose.but I have a simple question. for NFTFF calculations,where I should place Huygens surface?before PML or in edge of PML?because as distance from
hi to all. I'm new to fdtd.I wrote a 3D fdtd matlab code in cartesian coordinate with Mur ABC of first order.I want see far-field pattern of my antenna. I completed code,but output is very big.for example my E_theta in terms of dB is about 900dB!!! you think where I mistake? how I can to find error in my code? I think that my geometry (...)
Does my program flowchart of the fdtd far field calculation look correct. There is obviously much more detail in the calculation itself but does the flowchart make sense from a bird's eye view
Use Taylor series to show that the truncation error for the Yee’s fdtd method in a one-dimensional staggered grid is O(Δt2)in time and O(Δx2)in space. Are you assigning home-work to us?
hello I am desperately looking for a 2D fdtd code with an oblique plane incident wave! I have read many books but have difficulty implementing them so need a code to help! PLz! 8-O
Hi I am looking for a 3D fdtd code (C or Matlab) for a microstrip patch antenna, preferably tested against a standard solution or experimental data. After checking a few forums cannot find anything of the sort. Would greatly appreciate if someone was prepared to share or point out to the right place where to find it. many thanks Feodor.
With the TFSF formulation available for fdtd why are people still contemplating NTFF solutions of analytical far Field formulations in general. I am not sure what you mean by "analytical far Field formulations". But I often use TFSF and NTFF together. TFSF = total field scattered field => used to insert pla
I am searching for a stable subgrid implementation. The methods I tried so far all get unstable after a while. If anybody here has experience with subgrids I would like to learn about your experiences. In particular stability for long running simulations is a concern. Thanks.
To start with any 3d fdtd code should do. The far field computation is a separate issue. The main question is whether you are going to continuously update the far fields during the fdtd simulation or use a post-processing step In any case I would go one step at a time and if problems occur post them as concisely (...)
hello everybody.............. i want to solve the antenna parameters like return loss curve , input impedance and far field of probe feed rectangular DRA and i am unable to solve so plz help me ............. plz send me fully calculation of any antenna using 3D-fdtd method....i want to see how can i proceed ???????????????? provide me algorithm
hello Dear, i need fdtd code in MATLAB for rectangular dielectric resonator antenna analysis. i want to calculate its return loss curve , input impedance and far field pattern . plz help me. anybody wants to help me then also send me at
Do you have access to Sullivan's fdtd book? The code for this is in there. I have not ever written the near-to-far field transformation or I would just send you that. If you give me your e-mail address, I could perhaps send you whatevermaterials I have. -Tip
hello plz provide me the fdtd code for rectangular dielectric resonator antenna analysis i.e. its far field analysis,input impedance like . thanx
Hi, I am looking for fdtd 3d near to far field transformation code in frequency domain written in C or C++. Please help. Thanks. madd
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
Hi all How can I compute Radar Cross Section in 2D-fdtd simulation? Thank you.
Hello everyone, I'm trying to implement Near to far field transformation (frequency domain) for my fdtd code in matlab following taflove's books but it doesn't work. I honestly don't understand where I'm doing wrong because I'm following the books step by step. Does anybody have a 3D/2D working code and be so nice to share it? ( cb88(et)hw.ac.u
cst IS BASED ON FIT (finite integrations technique), not fdtd.
Hi, I'm trying to figure out the best hardware configuration for fdtd simulations in matlab. I hope that I'm not too much off topic, but I think that many other people will find this post useful. As far as I know, the last version(s) of matlab can use the multicore capability of the last CPUs for long vector and matrix operations by simply ticking
Hi everybody, I am trying to build a program that can be used for solving fdtd problems but I need algorithms to use for the meshing of the geometry and also allgorithm for near to far filed transformation. Regards