1000 Threads found on edaboard.com: Fdtd Antennas
ref the paper Numerical Modeling of Microstrip Circuits and antennas, D. M. Sheen, Cambridge, MA, Massachusetts Institute of Technology, 1991.
The patch work 7.5GHz.
But in Sullivan's fdtd book,as a example for 3D type.But in his book,the result is 6GHz,is it the result error?(in CH5)
Electromagnetic Design and Simulation :: 11-13-2005 05:20 :: IICCEE :: Replies: 0 :: Views: 738
in another thread (UWB-antennas Simulation) I got informations about fdtd method for antennas simulation special for uwb antennas for study the parameters in "time domain".
Many thanks for all replies.
Now next quastions:
Should I write for fdtd method program codes?
If yes: in which program
RF, Microwave, Antennas and Optics :: 01-19-2007 02:08 :: man_arief :: Replies: 2 :: Views: 1019
I am working in UWB microstrip antennas analysis using fdtd but facing problem in C code implementation. plz help me with some example codes.....
RF, Microwave, Antennas and Optics :: 04-07-2008 08:57 :: debashissarmah :: Replies: 0 :: Views: 615
I am working in UWB microstrip antennas analysis using fdtd but facing problem in C code implementation. plz help me with some example codes...
Electromagnetic Design and Simulation :: 05-08-2008 03:50 :: debashissarmah :: Replies: 0 :: Views: 799
Conformal antennas require different solvers than full planar structures. There are quite a few solvers commercially available: CST, WIPL-D and HFSS are well known. If you look around on the web using google you can even find open source fdtd and FEM codes for solvers and meshers. It is also possible to calculate/simulate a large number of structur
RF, Microwave, Antennas and Optics :: 05-22-2003 17:21 :: kleinesmurf69 :: Replies: 5 :: Views: 1550
it is not a program but a paper in pdf avail in IEEE explorer. 1992 - fdtd Calculation of Radiation Patterns, Impedance and Gain for a monopole Antenna on a conducting Box.
thanks you , I think I need this program,but I don't download.
Electromagnetic Design and Simulation :: 05-24-2004 10:19 :: Element7k :: Replies: 2 :: Views: 1549
enjoy special to riyad that he seem to be interested in fdtd,pls thanks dr.hassan sallabi for his help
Electromagnetic Design and Simulation :: 03-12-2004 00:42 :: abdoeng :: Replies: 0 :: Views: 1172
It looks like the book is the following:
Qian, Y. and T. Itoh, fdtd Analysis and Design of Microwave Circuits and antennas (Software and Applications), Realize Inc.,Tokyo, 1999
Is that right?
PS: There is a free fdtd software in java at the following link:
Software Links :: 02-15-2006 14:55 :: sinatra :: Replies: 18 :: Views: 16959
ref the famous paper:
Numerical Modeling of Microstrip Circuits and antennas, D. M. Sheen, Cambridge, MA, Massachusetts Institute of Technology, 1991. (MTT 1991),
The patch work 7.5GHz.
In Sullivan's fdtd book,as a example for 3D type.
But in his book,the result is 6GHz,is it the result error?(in CH5)
Electromagnetic Design and Simulation :: 11-19-2005 06:13 :: IICCEE :: Replies: 0 :: Views: 1125
Anyone having these papers? thanks very much.
Modification to convolution CFS-PML for the ADI-fdtd method, Feb 2006, Microwave and Optical Technology Letters
Microwave and Optical Technology Letters
Volume 48, Issue 2 , Pages 261 - 265
Modification to convolution CFS-PML for the ADI-fdtd method
Electromagnetic Design and Simulation :: 04-22-2006 10:29 :: tsb_nph :: Replies: 6 :: Views: 1858
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
Electromagnetic Design and Simulation :: 05-16-2006 11:29 :: babinton :: Replies: 3 :: Views: 1237
i need fdtd code to simulate dielectric resonator antennas, can any one herlp me?
thanks in advance
RF, Microwave, Antennas and Optics :: 09-28-2006 18:53 :: emg :: Replies: 0 :: Views: 415
please i need help to solve this problem
i need to simulat an optical fiber one dimension in fdtd but with i take the materieal to be dispersive and nonlinear and i need to get the electric field at very large distance like 100 km but in simulation i can not simulat this large domain so i need to make some scaling to the material to get the same
Electromagnetic Design and Simulation :: 12-17-2006 11:55 :: fatma1000 :: Replies: 4 :: Views: 701
I am glad to work with about UWB antennas by fdtd Method.
So if you need help you can contact me on my email:
RF, Microwave, Antennas and Optics :: 12-27-2006 10:33 :: helio1972 :: Replies: 8 :: Views: 1387
I am working on antennas with metamaterials using fdtd method.
So to simulate metamaterials with fdtd i need fristly to calculate the permittivity and the permeabilty using retrieval method. so I have used the smith article namely '' Electromagnetic parameters retieval from inhomogeneous metamaterials'' published in March 2005. (...)
RF, Microwave, Antennas and Optics :: 06-04-2007 12:22 :: helio1972 :: Replies: 2 :: Views: 799
Here it is...
The Finite Difference Time Domain (fdtd) technique consists of simulating time varying electromagnetic fields in various media with Maxwell's curl equations in the form of finite difference equations, which are then used in a leapfrog fashion to incrementally advance the discretized electromagnetic fields forward in time and solve fo
Electromagnetic Design and Simulation :: 07-14-2007 01:16 :: Manjunatha_hv :: Replies: 3 :: Views: 1564
have a look at
# K. Abdijalilov and J. B. Schneider, ``Analytic Field Propagation TFSF Boundary for fdtd Problems Involving Planar Interfaces: Lossy Material, Evanescent Fields,'' IEEE antennas and Wireless Propagat. Lett. vol. 5, pp. 454--458, 2006. (1.4 MB PDF file.)
Software Links :: 04-12-2008 09:02 :: iyami :: Replies: 5 :: Views: 1432
til now idon't understand about MoM n fdtd what is the diffrent? for designing antenna Microstrip i have been using MWO. my friend said MWO is using MoM n HFSS is using fdtd is it true.....n for running simulation of MWO its need long time, especially for high frequency how about HFSS its need long time too for running simukation....thx b 4
RF, Microwave, Antennas and Optics :: 11-20-2007 12:08 :: siwowox de santos :: Replies: 6 :: Views: 1121
Hi, I'm simulating Dielectric Resonator antennas with an in house fdtd code. When the DRA has low permittivity, say around 20-30, few thousands time steps are enough to calculate the S11 parameter. When I use higher permittivities, the more time steps I use the more confused S11 plot I get; with confused I mean lots of resonances/minimums. It seems
Electromagnetic Design and Simulation :: 12-02-2007 16:20 :: grendhell :: Replies: 6 :: Views: 1743
the application relates specifically to electrically large problems, for instance modeling various types of antennas (but resonant types), such as wire or MPA's on vehicles.
i have no practical experiencing solving any of these techniques, but am looking for a greater understanding as to why any solution technique would be better than another in
Electromagnetic Design and Simulation :: 02-05-2008 18:01 :: ghb :: Replies: 6 :: Views: 12691
Download links for the e book
EM Modeling of antennas and RF Components for Wireless Communication Systems
is given below:
Taflove's fdtd book (Second Edition) is available at
Electromagnetic Design and Simulation :: 02-13-2008 22:13 :: jithesh :: Replies: 2 :: Views: 774
Hello, i have final assignment about design of phased array antenna. Any body have codes matlab for fdtd analysis of phased array antenna?
I need your help. Thank you
Electromagnetic Design and Simulation :: 03-14-2008 07:11 :: hty :: Replies: 0 :: Views: 1216
What about method of moments software?
Despite the fact that less people use them than FEM or FIT/fdtd they are extremely efficient in antenna simulation and don't suffer from any radiation boundary/ PML related problems. By efficient, I mean very fast and employing small amount of memory.
For instance, how much would it take to simulate accu
Electromagnetic Design and Simulation :: 05-22-2008 09:36 :: drasko :: Replies: 14 :: Views: 1478
The short answer is:
MOM is most efficient for wire and sheet antennas.
FEM is best for moderately sized and volumetrically complex antennas.
fdtd can handle the largest simulations and is best for broadband simulations.
Electromagnetic Design and Simulation :: 08-23-2008 16:06 :: rrumpf :: Replies: 4 :: Views: 1636
hi for all
please any persone help me:
i have problem, when i read the paper R. J. Luebbers, Fellow, IEEE, and H. S. Langdon ?A Simple Feed Model that Reduces Time Steps Needed for fdtd Antenna and Microstrip Calculations? IEEE TRAKSACTIONS ON antennas AND PROPAGATION, VOL. 44, NO. I, JULY 1996. and programed by matlab ,i have the sam
Electromagnetic Design and Simulation :: 06-27-2008 15:34 :: grace1977 :: Replies: 0 :: Views: 865
A dipole source and a point source are the same thing when referring to fdtd. Keep in mind, however, that you can excite a dipole source with either an electric field or a magnetic field and each will produce a different configuration of fields and likely a different response from whatever you are modeling. The dipole source usually refers to the
Electromagnetic Design and Simulation :: 02-25-2009 07:29 :: rrumpf :: Replies: 17 :: Views: 4594
I am working with fdtd. I want to simulate radiation of microstrip antennas ( Sullivan book). Can you show me the way to implement it?
Electromagnetic Design and Simulation :: 04-06-2009 23:00 :: t25 :: Replies: 7 :: Views: 2457
I am studying an article by Maloney. the article is A Simple fdtd Model for Transient Excitation of antennas by Transmission Lines.
I'm kind of lost, because I need to implement this article in MATLAB. Someone would have something to recommend me?
Or maybe some implementation done in MATLAB.
Electromagnetic Design and Simulation :: 11-18-2009 06:34 :: murcilia :: Replies: 0 :: Views: 992
if any one working on leaky wave antenna .please help me with fdtd to design this type of antenna .provide me with some books and numerical technique
Hello, i am doing about leaky wave antenna simulation using the fdtd method. Any body help me to give algorithm leaky wave antenna simulation using the fdtd method? Or any body have (...)
Electromagnetic Design and Simulation :: 09-17-2010 01:22 :: aashik :: Replies: 1 :: Views: 1003
I'm looking for actually limits attained from the modern fdtd implementations on cluster in terms of time elapsed and grid sizing. I'm interested in scattering problems of large structures as airplanes or ships with antennas installed.
Does anybody know the latest results reached from universities or commercial code ?
Electromagnetic Design and Simulation :: 12-13-2010 05:19 :: valerio_19 :: Replies: 0 :: Views: 824
I would also recommend some time domain code for the antenna array. Empire XCcell (based on fdtd) is a good choice for antennas.
It is very fast (>2000 Mcells/s) without accelerator card, and has cluster capability for very big models.
EMPIRE XCcel Antenna Examples
Electromagnetic Design and Simulation :: 05-18-2011 02:45 :: volker_muehlhaus :: Replies: 5 :: Views: 1541
I'm looking for software to analyse both Yagi-Uda antennas, and the Coaxial Colinear (CoCo) type, which consists of sections of transmission line
Build A 9dB, 70cm Collinear Antenna
joined end-to-end, wit
RF, Microwave, Antennas and Optics :: 11-07-2011 07:34 :: drkirkby :: Replies: 14 :: Views: 2172
Does anyone work with fdtd using parallel processing in matlab? Do anyone have a sample code for 3d fdtd for antennas such as basic rectangular patch in matlab?
Electromagnetic Design and Simulation :: 03-12-2014 07:21 :: subasree09 :: Replies: 0 :: Views: 280
I need Construction Data of Bow Tie antennas!
Other Design :: 04-17-2002 00:19 :: Buchi :: Replies: 3 :: Views: 2439
How does about xfdtd?
RF, Microwave, Antennas and Optics :: 12-19-2002 10:00 :: jimjim2k :: Replies: 9 :: Views: 3849
i don't think IE3D can do the is based on MOM,SO it only can solve the 2.5D (planar)problem.
zealand FIDELITY can solve the 3D is based on fdtd.
Electromagnetic Design and Simulation :: 05-28-2003 23:16 :: dragonlea :: Replies: 27 :: Views: 3914
Hear it for the first time.
fdtd code is relatively easy to write, I guess that is why there are so many products. It is not easy to make it fast, though.
Electromagnetic Design and Simulation :: 01-17-2003 20:48 :: loucy :: Replies: 6 :: Views: 2289
RF, Microwave, Antennas and Optics :: 01-18-2003 21:26 :: mbyka :: Replies: 6 :: Views: 1675
I'ld like to know if you have experience about slotted patch antennas.
I've realized and measured some prototype and the results are better than standard rectangular single-layer patch antennas in terms of Impedance Bandwidth and in terms of Polarization Bandwidth.
I've read Wong book, do you have any other configuration idea to sharewere?
RF, Microwave, Antennas and Optics :: 01-22-2003 05:37 :: Lupin :: Replies: 19 :: Views: 2399
This is because we put emotions over it I guess:)
After all fdtd is a great and damn simple algorithm and many excellent devices have been designed with it. Great goody:). Like others, there are some restrictions but everything depends on one'st applications and pocket. Last but not least - the legacy software.
Before turning to Ansoft HFSS we h
Electromagnetic Design and Simulation :: 02-01-2003 14:55 :: cheng :: Replies: 30 :: Views: 9086
I have one question:
What do we mean by "Two Identical antennas"?
Does it mean same gain, radiation pattern, ...etc
Is it a stupid question?
I'm still new to this field.
RF, Microwave, Antennas and Optics :: 02-02-2003 19:02 :: ayhz2002 :: Replies: 7 :: Views: 905
Trends in antennas for Wireless Communications
RF, Microwave, Antennas and Optics :: 02-10-2003 02:58 :: uummcc :: Replies: 5 :: Views: 1753
anybody has matlab code or any program to plot radiation pattern of different types of antennas (dipole,...)
both 3d and in the planes xy,yz,xz,... or any other plane
Electromagnetic Design and Simulation :: 03-08-2003 08:32 :: mmelek1 :: Replies: 2 :: Views: 5080
Everything is good for a few type of antenna.....and only for a few.
Once chosen the antenna yuo can chose the simulator...otherwise it's like you were trying to write with a chalk on a paper sheet.
P.S. Tavarnelle is also a very nice place in Tuscany....with very good wine!
Nice Nickname is it!
RF, Microwave, Antennas and Optics :: 03-08-2003 15:29 :: mrm :: Replies: 1 :: Views: 788
Are there anybody have a 3D fdtd matlab code with PML ???
Electromagnetic Design and Simulation :: 03-18-2003 08:41 :: ppAntenna :: Replies: 12 :: Views: 15346
Very difficult to answer man. The answer may vary according to the specific shape of element antenna as well as curvature. MOM/FEM could be OK if you can model it properly. fdtd is not well accepted for array simulatin.
Codes: ooops they are very expensive man. Some days back i got a code for patch antenna from Erip which have been coded by one
Electromagnetic Design and Simulation :: 03-27-2003 17:34 :: g86 :: Replies: 10 :: Views: 4102
1. I think you can use any wave-form. How to do it would depend on the software you are using. An example would be providing a data file specifying the amplitude of pusle at a series of time steps. Now the accuracy of the result and the time to convergence would be affected by the wave-form. If your source runs for 10000 time steps before reaching
Electromagnetic Design and Simulation :: 11-04-2003 09:13 :: loucy :: Replies: 16 :: Views: 5573
exactly what is meant by frequency dependent fdtd method? Material properties are frequency dependent (dispersive)?
Electromagnetic Design and Simulation :: 06-21-2003 10:55 :: loucy :: Replies: 19 :: Views: 4104
Hi to all:
I need information and schemes to make a multicoupler of receiving antennas, 4 and 8 exits.
I also need the scheme an preamplifier to compensate the losses.
Frequency band: 150 & 80Mhz.
tnk's & regards.
RF, Microwave, Antennas and Optics :: 07-13-2003 19:09 :: joan111 :: Replies: 5 :: Views: 1281
AWAS for Windows is a versatile program for analyzing wire antennas and scatterers assembled from arbitrarily located and interconnected straight-wire segments. The program consists of a shell for user-friendly interface and a kernel for numerical analysis.
The wire structure can be in free space or located above a perfectly co
Software Links :: 09-02-2003 11:34 :: easygoing :: Replies: 2 :: Views: 2266