67 Threads found on edaboard.com: Finite Ground ie3d
Ansoft ensemble and ansoft designer are not suitable for simulation of structures with finite ground plan.ie3d is better.
Electromagnetic Design and Simulation :: 06.01.2005 02:20 :: kamilia :: Replies: 3 :: Views: 2336
I checked both of your structures. There are problems on both of them.
1. For the infinite ground plane model, you define No.0 substrates as good conductor. It is correct. However, you also define the finite ground plane shape as some polygons on z = 0. On ie3d, this means you dig a hole (...)
Electromagnetic Design and Simulation :: 28.12.2006 15:23 :: jian :: Replies: 4 :: Views: 1263
Normally, finite ground plane will degrade circular polarization.
RF, Microwave, Antennas and Optics :: 08.01.2007 18:34 :: jian :: Replies: 1 :: Views: 617
HOW CAN I GIVE A PORT TO finite ground PLANE AND INfinite ground PLANE USING ie3d?
RF, Microwave, Antennas and Optics :: 28.03.2008 00:34 :: kri_moni :: Replies: 1 :: Views: 923
I want to model radiation pattern of a dipole antenna above a finite ground plane with Method of Moments (without Software like ie3d or FEKO), but i don't know how. my main problem is in finding Integral Equation of problem. can anyone help me???
RF, Microwave, Antennas and Optics :: 12.06.2009 10:54 :: ali987 :: Replies: 0 :: Views: 926
I have a simple 8 dipole design I want to simulate using Zelands ie3d but I cannot see how you specify the tracks on two sides of the FR4 substrate.
I can add substrates. OK
I can add tracks. OK
Basically its two "H" shapes like this:
Where the top of the "H" (squared off U shape) is on the top of the PCB and bottom of the "H" is on t
Electromagnetic Design and Simulation :: 10.08.2004 06:15 :: covenlink :: Replies: 1 :: Views: 1804
how i can define GCPW with finite ground in ie3d ?
Electromagnetic Design and Simulation :: 31.05.2005 01:43 :: zeshan102 :: Replies: 11 :: Views: 3665
Hi, Abhi: I believe you must have not defined differential ports between the center strip and the finite cpw grounds. The port you defined on the center strip is referencing the infinite ground. ie3d issues a warning message to you. If you define the ports correctly, it should cause such message. Attached (...)
Electromagnetic Design and Simulation :: 22.12.2005 15:36 :: jian :: Replies: 1 :: Views: 840
i have a basic doubt in defining the port in case of grounded CPW structure - in the ie3d manual it is mentioned that while defining port (advanced extension/extn. for MMIC) we should define port only to a part of the finite CPW ground for higher accuracy, but my question is that - wat should be the size of that (...)
Electromagnetic Design and Simulation :: 26.12.2005 11:39 :: abhi_kolkata :: Replies: 1 :: Views: 992
Thanks for your timely help. Can you please clear one more doubt? How to extract shunt inductance using ie3d? Should I use any extension line as one end of the inductor line is short circuited for feeding the inductor? If I want to use a finite ground plane then what should be the dimension of the finite (...)
Electromagnetic Design and Simulation :: 23.02.2006 04:09 :: MM_DEVILS :: Replies: 6 :: Views: 1321
I simulate an UWB patch antenna covering 3~11GHz, with the finite ground, the antenna size is 200mm, and the thickness is quite large(about 15mm), can the differential port work?
For both frequency range and antenna dimension are too large,the simulation of every point takes very long time, so I decrease the mesh number to 6, and the result i
Software Problems, Hints and Reviews :: 25.04.2006 03:01 :: verashen :: Replies: 1 :: Views: 845
I sent you the explanation and revised geometry files 5 minutes ago. By the way, I just noticed that the resonace of your structure is not due to the CPW fed slot. It is due to the finite ground. The finite ground's resonance is at about 5.5 GHz and the slot's resonance is at about 8 GHz. When you define so wide (...)
Electromagnetic Design and Simulation :: 10.11.2006 11:16 :: jian :: Replies: 9 :: Views: 1279
I checked your structure and results. I can see there are many up and down in the s-parameters. You may consider it as instability. In fact, I believe it is not. It should be true resonances caused by the finite ground plane and the 2 monople like structures in the finite ground plane. Basically, they are (...)
Electromagnetic Design and Simulation :: 08.12.2006 12:38 :: jian :: Replies: 3 :: Views: 527
It is simple. For example, you have draw the finite ground (or define an infinite ground) on z = 0. You also define the patch on z = 3 mm. You want to build a shorting plate from 3 to 0. What you can do is to select an edge of 2 vertices on the patch at z = 3. Select EDIT->ADD VIA ON EDGES command. Enter the (...)
RF, Microwave, Antennas and Optics :: 14.12.2006 23:10 :: jian :: Replies: 7 :: Views: 904
From the look, it seems that it is modeing a finite ground patch in the manual while your built is modeling a patch on infinite ground. In order to make it finite ground, you need to define the No.0 layer's conductivity to 0 or some very small value, and put some polygon(s) to (...)
RF, Microwave, Antennas and Optics :: 15.12.2006 11:19 :: jian :: Replies: 7 :: Views: 1976
On ie3d, the scattering field is defined as the field scattered instead of reflected. When you define infinite substrate, there is scattered field and reflected field. Reflected field is a plane wave when the incident wave is planewave. Scattered field is a spherical wave.
In some sense, if you model a patch on infinite (...)
Electromagnetic Design and Simulation :: 18.12.2006 17:18 :: jian :: Replies: 1 :: Views: 973
I checked your model. It is ok. The pattern is not complete omni-directional. However, given the structure, it is like that.
There is a dip at theta = 90 degrees. It is caused by the infinite extended substrate. If you use finite substrate, the dip will be gone while the overall pattern shape is still like that.
It is impos
Electromagnetic Design and Simulation :: 09.01.2007 16:37 :: jian :: Replies: 5 :: Views: 859
I don't see serious problem in your structure. I tried the finite ground plane model on it. It is slightly different from the infinite ground model. The difference is mainly due to the fact you chose very thin substrate for 10 GHz. In fact, there might be 2nd order mode in the transmission line due to the thick (...)
Electromagnetic Design and Simulation :: 13.01.2007 19:17 :: jian :: Replies: 7 :: Views: 718
I checked the structure. I see some incorrect parameters "t=1.6 and l=1.3". I assume they are "t=1.3 and l=1.6". Otherwise, I don't see other mis-match in the parameters between your built of geometry and the one discussed in the paper.
However, for your finite GND model, you define -1 port over a very wide edge. This normally shou
Electromagnetic Design and Simulation :: 11.07.2007 12:24 :: jian :: Replies: 8 :: Views: 933
There are only two choices:
1. Make a hole on an infinite ground (define horizontal polygons on the infinite ground to represent the slots on the ground)
2. Make a hole on a finite ground (use the way described by baraguru).
The 2 choices use (...)
RF, Microwave, Antennas and Optics :: 10.09.2007 12:53 :: jian :: Replies: 9 :: Views: 1393
well ie3d manual is as good as this one as far as I can think. It is not well written.
My experience is that ie3d is only good for planar structures with infinite ground plane. I have simulated some slot antennas using ie3d. They came very well and the speed was impressive. For finite (...)
RF, Microwave, Antennas and Optics :: 10.02.2008 07:01 :: dissa :: Replies: 9 :: Views: 3818
I am trying to set up a problem in ie3d where there is an edge-fed loaded patch antenna. The problem is this: after setting up advanced extension differential port on the microstrip I would like to insert a probe feed to patch, however the program gives me an error: "unable to build the probe-feeds with error code (ic=1)".
This problem o
RF, Microwave, Antennas and Optics :: 03.01.2008 03:51 :: junta99 :: Replies: 10 :: Views: 1845
Im trying to model a patch antenna on a finite ground and substrate.I followed the manual in creating the finite substrate.But after the meshing when i try and simulate, it gives me an error message.
"remove current graph from list
remove current graph from list of simulating finite dielectrics"
Could someone tell me (...)
Electromagnetic Design and Simulation :: 05.03.2008 13:56 :: d2_asimov :: Replies: 4 :: Views: 939
Hi all again
In this post I have simulated this paper with finite ground. But result?s isn?t exact too.
Could anybody check these files and tell me my mistake please?
I will wait for your reply.
RF, Microwave, Antennas and Optics :: 01.04.2008 10:13 :: rf-en :: Replies: 3 :: Views: 601
Define a layer's sigma to a very large value for infinite ground. then Define a finite ground as some polygons.
Software Problems, Hints and Reviews :: 06.05.2008 06:39 :: nazanin :: Replies: 1 :: Views: 522
What do you mean half ground plane? On ie3d, you can define infinite ground on substrate or you can define finite ground plane using some polygons. If it is semi-infinite ground, you need to use finite ground to model it. (...)
Software Problems, Hints and Reviews :: 16.05.2008 15:32 :: nazanin :: Replies: 1 :: Views: 554
I have one project at ie3d, my result is similar to article, it is return loss of antenna, my result is 10 db more than article, what do i friend?
RF, Microwave, Antennas and Optics :: 05.06.2008 08:41 :: Leilon :: Replies: 1 :: Views: 507
CPW port is discussed much in ie3d user's manual.
However, for slotline, you need to be careful. A slot on an infinite ground plane does not have a single fundamental mode. You may not be able to model it using transmission line theory even though a slot line as port of a circuit without ports are possible. If you define a (...)
Electromagnetic Design and Simulation :: 10.06.2008 21:38 :: jian :: Replies: 2 :: Views: 1467
I've been using ie3d to make numerical calculation (simulation) on my MSA project.
It's a 3 layers patch antenna.
Until now, I've used the infinite ground plane and infinite substrate on ie3d.
The next step, I would like to use finite ground plane and (...)
Electromagnetic Design and Simulation :: 29.08.2008 04:01 :: 2cent :: Replies: 3 :: Views: 1274
hi friends i am designing monopole antenna for UWB application with the finite
ground plane ,but the ground plane is not completely below the hole patch its
limited on finite dimension 2D view of my problem is given below
please help me if any body having any idea about finite (...)
RF, Microwave, Antennas and Optics :: 05.09.2008 15:17 :: ritesh_badhai :: Replies: 0 :: Views: 553
In ie3d help, you can find how to define finite ground plane.
In the basic parameter menu, use sigma=0 for Ztop=0; it means that there is no infinite ground. Then you can define all the layer you need (please see the manual of ie3d).
Electromagnetic Design and Simulation :: 09.02.2009 04:35 :: shameemkabir :: Replies: 3 :: Views: 1225
You can define substrate, finite ground plane etc. in ie3d. In the help file of ie3d you can find example how to define all these.
RF, Microwave, Antennas and Optics :: 18.02.2009 03:50 :: shameemkabir :: Replies: 1 :: Views: 674
To start with I am simulating pifa antenna using ie3d, extension for mmic scheme. and the design was working perfectly too..
In pifa I am using finite ground plane, so differential feeding I am providing to the structure having 1 mm distance from (finite) ground plane..
THe problem is coming (...)
Electromagnetic Design and Simulation :: 02.04.2009 02:30 :: nipunn007 :: Replies: 2 :: Views: 1201
Did you simulated the antenna with finite ground plane?
Also confirm the loss tangent and dielectric permitivity of the PCB you are using during ie3d design. Try to increase bandwidth a little.
Try increasing the mesh frequency
Or simply analyze the same design to achieve resonant frequency of 23.5 GHz. This way you will know which (...)
RF, Microwave, Antennas and Optics :: 06.05.2009 20:28 :: usman_mahfooz :: Replies: 2 :: Views: 595
I'm new with simulation and antenna design. I'm triying to simulate a probe-fed rectangular patch antenna on a finite ground plane.
I designed this antenna by transmission line model using fiberglass as dielectric substrate with Er=4.4 and h=1.52mm.
The size of this patch is L=29.47mm and W=38.03mm. The size of the ground plane (...)
Electromagnetic Design and Simulation :: 02.07.2009 14:11 :: clark09 :: Replies: 0 :: Views: 1041
I am new to ie3d and am trying to learn it. I would like to use it to design PCB antennas (inverted-F, meander line, etc.).
Most examples I've read so far use an infinite ground plane. My question is: what is the difference between using an infinite and a finite ground plane? (...)
Electromagnetic Design and Simulation :: 11.01.2010 13:51 :: rvargo :: Replies: 0 :: Views: 1191
I find it difficult to design UWB antenna in ie3d having finite ground plane.
Can someone please help me by telling which type of ports to be used for the microstrip feed with finite ground plane and how to make a finite ground plane as in ie3d, by default, (...)
RF, Microwave, Antennas and Optics :: 22.03.2010 07:23 :: kandakatlakaushik :: Replies: 1 :: Views: 582
i have been using ie3d.
but the sample folder installed in my computer has been "corrupted" please can anyone upload the sample folder or send it to my e-mail id "firstname.lastname@example.org"
the other problem is,i want finite ground plane which i got in sample folder,but i want air on same at z=0 above the finite (...)
RF, Microwave, Antennas and Optics :: 15.04.2010 14:26 :: vishal315 :: Replies: 0 :: Views: 406
I don't know the version of ie3d you have, but the older ones do support limited ground plane, but infinite dielectrics only. This will give zero radiation under zero elevation, while the actual antenna may produce radiation under zero elevation.
You can remove the infinite groundplane by (...)
Software Problems, Hints and Reviews :: 05.05.2010 06:27 :: WimRFP :: Replies: 1 :: Views: 1136
i dont think dats d far as i ie3d finite ground plane is only possible by setting real part of conductivity of 0 layer to 0 and den d process i mentioned before....
Electromagnetic Design and Simulation :: 06.12.2010 07:19 :: cant-bury :: Replies: 6 :: Views: 1111
i already have a structure for printed monopole antenna
but i can't build it....i can't define a finite ground?
and if some one can help me to understand this structure...thank
RF, Microwave, Antennas and Optics :: 28.03.2011 13:13 :: hnoon :: Replies: 0 :: Views: 437
this time, i want to know about inset feed using ie3d.
in ie3d when we have to set the finite ground plane then we have to put the value 0 to real part of conductivity in the 0 layer in the basic parameters but we want to give inset feed then do we still follow the same procedure to set the ground (...)
Electromagnetic Design and Simulation :: 27.02.2012 12:59 :: vishal_sonam :: Replies: 0 :: Views: 442
It seems to me the infinite substrate explanation is counterintuitive. Shounldn't we expect the effect of finite substrate to be more significant when the antenna is spaced further away from the ground? But ghb described that results for 100mil spacing are bettern than those of 30mils.
More details of the design might be needed to get a (...)
Electromagnetic Design and Simulation :: 11.10.2003 22:06 :: loucy :: Replies: 16 :: Views: 2526
They aren't listed all but appreciate good idea.
OK, I have a question if someone have experience with comparing results of various p a t c h antennas (better say compact) given by ie3d and CST-MWS.
Usually I'm getting frequency shift between those two.
Note that I'm trying to set similar conditions when possible - like (in)finite (...)
Electromagnetic Design and Simulation :: 07.05.2004 08:50 :: eirp :: Replies: 15 :: Views: 1408
The example of monoploe over a finite ground plane doesn't say much about the "low-frequency" performance of the code. Try problem requiring lmbda/1000 mesh.
30MHz is not necessarily low frequency?
How does WIPL-D solve the monopole on finite ground problem in seconds?
Electromagnetic Design and Simulation :: 16.05.2004 23:44 :: loucy :: Replies: 5 :: Views: 1064
Hi, Oggi: I would suggest you to try to optimize your element and 4-patch array using infinite ground plane first. Input impedance is normally not affected by the size and shape of the antenna much. You can optimize it to get good match first. ie3d has built-in optimizers to help you optimize antenna perforamnces (S11, Z, or even pattern (...)
RF, Microwave, Antennas and Optics :: 12.09.2005 11:36 :: jian :: Replies: 5 :: Views: 1349
In any simulator, ie3d or Microwave office, we supppose to do finite ground method for DGS simulations. I just taken 3 layer, top is trip line of width W, and in the bottom accoring to the size of etching draw the gound plane. It may take few hours to understand the simualtion set-up, as all
RF, Microwave, Antennas and Optics :: 21.01.2008 06:23 :: kannadassan :: Replies: 3 :: Views: 1230
Here are some models (edge fed, infinite gnd & sub, finite gnd &/or sub) for the 8 GHz range. You can start from them.
I do want to warn you on the substrate thickness. The 2nd order mode should happen at about 30 GHz for a 0.35 mm thick substrate. Even you can use edge fed, microstrip lines in this frequency range with such a thic
Electromagnetic Design and Simulation :: 22.11.2005 11:39 :: jian :: Replies: 11 :: Views: 1620
(1) You can use ADV EXTENSION ports for the microstrip structures. If you model it as finite ground, you can use differential ports (either + and - using ADV EXTENSION ports or v-localized and h-localized ports).
(2) You can use ie3d to model the connector more precisely. The procedure is a little bit tedious. We will try (...)
Electromagnetic Design and Simulation :: 20.03.2006 13:16 :: jian :: Replies: 3 :: Views: 546
I am a student of electronical engeeniering and i am a new user of ie3d simulation program and i dont know how to put connectors on a structure.İn this structure there are two connectors on two sides.this is really a simple structure with a finite ground plane.I know the sizes and parameters but first of all, i want to learn how to put (...)
Electromagnetic Design and Simulation :: 20.03.2006 12:54 :: pegasuss :: Replies: 0 :: Views: 459