1000 Threads found on edaboard.com: Finite Ground ie3d
Normally, finite ground plane will degrade circular polarization.
RF, Microwave, Antennas and Optics :: 01-08-2007 18:34 :: jian :: Replies: 1 :: Views: 647
Define Port or Port for Edge group --> Infinite ground Plane.
Vertical Localized Port or Probe Feed to Patch --> finite ground Plane.
I suggest you to read ie3d Manual where above things are well-explained with examples
RF, Microwave, Antennas and Optics :: 03-28-2008 03:19 :: balaguru thavamani :: Replies: 1 :: Views: 987
i am currently doing my project work related to Defected ground Plane Structures in ie3d.I am facing an error while simulating the DGS antenna or any finite ground plane queries are :
1) what feeding mechanism is used for finite ground plane structures
2)how to we define the port for (...)
RF, Microwave, Antennas and Optics :: 06-26-2014 04:50 :: chandanbangera91 :: Replies: 0 :: Views: 160
Ansoft ensemble and ansoft designer are not suitable for simulation of structures with finite ground plan.ie3d is better.
Electromagnetic Design and Simulation :: 01-06-2005 02:20 :: kamilia :: Replies: 3 :: Views: 2462
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 :: 12-28-2006 15:23 :: jian :: Replies: 4 :: Views: 1297
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 :: 06-12-2009 10:54 :: ali987 :: Replies: 0 :: Views: 978
please send me above specification .geo file.... m stuck with trial and error method. further i need to implement wilkinson pwer divider.
so please send me .geo file with finite ground plane.
m working on ie3d
RF, Microwave, Antennas and Optics :: 01-26-2014 00:34 :: Chirag Chheda :: Replies: 0 :: Views: 236
I assume that in Momentum only infinite ground plane can be properly defined. However ground reference ports are available. Did someone already experiment with them? They would allow you to define finite ground plane.
Electromagnetic Design and Simulation :: 11-27-2003 02:49 :: Ghost Tweaker :: Replies: 1 :: Views: 1766
Hi, i want to know, how can i calculate the finite ground plane for a microstrip patch antenna and microstrip patch array?
Thank, I am looking foward to hear from you at your earlies convenience.-
RF, Microwave, Antennas and Optics :: 10-19-2004 14:41 :: oggi :: Replies: 0 :: Views: 910
hi,pls more details,if u want to simulate with finite ground(dimensions arbitrary) u can use HFSS,FIDELITY (FDTD),CST packages,for ur element and simulate ur s par.
RF, Microwave, Antennas and Optics :: 10-20-2004 16:03 :: abdoeng :: Replies: 6 :: Views: 1635
I tried a finite-ground singlewire layout simulation in Momentum for a 7-metal process. I chose AM as the signal layer and M1 as the ground layer. The ground layer has the same length and a three-time width as the signal layer. Two 50ohm ports are made by AM layer. Then I ran S-parameter simulation in Momentum. However, (...)
RF, Microwave, Antennas and Optics :: 02-26-2005 19:18 :: magicRF :: Replies: 1 :: Views: 736
1. To convert your structure to finite ground, you just need to define the No.0 substrate to air and draw the shape of the finite ground plane there. I will e-mail you an example by assuming a finite ground plane size.
2. Your antenna is resonanting at about 5.5 GHz. You (...)
Electromagnetic Design and Simulation :: 12-28-2006 15:36 :: jian :: Replies: 7 :: Views: 767
u hav to model a finite ground plane
in edaboard itself good papers on uwb antennas are posted ..or u should go through Mic and Opt. Tech Letters and IEEE journals
RF, Microwave, Antennas and Optics :: 04-01-2007 03:03 :: akedar :: Replies: 3 :: Views: 1140
Hi, everyone. I have a question about the ADS Momentum finite ground plane simulation.
I know that in order to get a good results for the software based on MOM, a infinite ground plane is needed. However, I also want to try the finite ground plane simulation in ADS Momentum.
RF, Microwave, Antennas and Optics :: 06-25-2007 20:57 :: winglj :: Replies: 7 :: Views: 5146
I am trying a simple simulation, such as a monopole on a finite size PEC ground plane. How do I model it in HFSS? What I did is that I assigned the plate as PEC, but not infinite ground plane. Then I used either a wave port or lump port for excitation. I had air box all around the monopole and the plate. I mean (...)
Electromagnetic Design and Simulation :: 10-31-2007 16:57 :: rey843 :: Replies: 8 :: Views: 2504
If you have a patch antenna with finite ground plane. How to setup the airbox correct?
I have used minimum \lambda/4 as a distance to my antenna structure.
But lets say you have an antenna with a very small ground-plane and you still need the \lambda/4 as minimum distance. Then there is a gap between the antenna and
Electromagnetic Design and Simulation :: 09-08-2008 09:38 :: tyassin :: Replies: 5 :: Views: 1488
u can use HFSS to do works fine but u know with a finite ground plane your gain would be 3-dB less than what it is supposed to be and the sidelobe levels shoot up.the concept of finite ground plane is when u assign the dimensions of it less than 10*lambda.anything more than that is considered infinite (...)
Electromagnetic Design and Simulation :: 05-26-2009 01:25 :: rotmanlens :: Replies: 3 :: Views: 2252
I am simulating a linear microstrip array for wi max applications at 2.4Ghz....while considering the effect of the finite ground plane..the resulting return loss is very low about -5db and the radiation pattern has a large back lobe....
is this results correct ...please help me i have only a limited time for my project completion...
RF, Microwave, Antennas and Optics :: 03-15-2010 13:42 :: SAILLESH.SABARISH :: Replies: 0 :: Views: 520
I work in design UWB microstrip patch antenna with finite ground plane
and i want to know what the boundary condition can i assign to get the result
what boundary condition for the finite ground plane ???
i design using Ansoft HFSS 11
Thanks in advance
RF, Microwave, Antennas and Optics :: 05-26-2010 02:21 :: dragonhamada :: Replies: 3 :: Views: 951
I just begin to learn ADS. i want to design a 50ohm coplanar waveguide with finite ground. I know the linecalc in ADS can be use to obtain the gap and wide value of infinite CPW. Is this tool still valid to for CPW with finite ground?
I have seen dr_em(
Electromagnetic Design and Simulation :: 08-10-2010 09:12 :: orangemay :: Replies: 0 :: Views: 1772
I want to simulate a W band 50 ohms finite ground conductor backed CPW line. I am using HFSS . I am not getting proper result. My problem is on changing the waveport size , the impedance of the CPW also changes for the fixed dimensions , so how can I exactly get the CPW dimensions for 50 ohms . My subs is er=3.38 and thickness=0.203
Electromagnetic Design and Simulation :: 06-28-2012 12:10 :: smritigarg127 :: Replies: 0 :: Views: 405
i am working in HFSS v.10 and i am designing a spiral microstrip antenna with finite ground plane. However, i am getting most of the radiation below ground plane. Please help me detecting the problem with my design. i knw i can use finite ground plane but its impractical. i have to fabricate this (...)
Electromagnetic Design and Simulation :: 02-12-2013 10:14 :: chitra takle :: Replies: 4 :: Views: 447
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 :: 01-11-2010 13:51 :: rvargo :: Replies: 0 :: Views: 1239
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 :: 03-05-2008 13:56 :: d2_asimov :: Replies: 4 :: Views: 983
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 :: 05-06-2008 06:39 :: nazanin :: Replies: 1 :: Views: 541
It ist just 2 steps:
1. Define the dielectric type and remove the infinite subsrate in Basic Parameters.
2. Draw the shape of the finite dielectrics and define it as a finite dielectric call in Adv Edit->Define finite Dielectric Call.
Electromagnetic Design and Simulation :: 08-29-2008 11:05 :: jian :: Replies: 3 :: Views: 1337
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 :: 09-05-2008 15:17 :: ritesh_badhai :: Replies: 0 :: Views: 579
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 :: 02-09-2009 04:35 :: shameemkabir :: Replies: 3 :: Views: 1251
you must be having different substrate layers...select the bottom layer after you finish your structure and connections.....draw a rectangle in the bottom layer with desired dimensions such that it contains the struct....then give the dimensions......
i tell you how i do to select the ground plane
step 1st i se
Electromagnetic Design and Simulation :: 12-05-2010 05:26 :: sameerccs11 :: Replies: 6 :: Views: 1173
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 :: 08-10-2004 06:15 :: covenlink :: Replies: 1 :: Views: 1847
how i can define GCPW with finite ground in ie3d ?
Electromagnetic Design and Simulation :: 05-31-2005 01:43 :: zeshan102 :: Replies: 11 :: Views: 3786
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 :: 12-22-2005 15:36 :: jian :: Replies: 1 :: Views: 865
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 :: 12-26-2005 11:39 :: abhi_kolkata :: Replies: 1 :: Views: 1032
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 :: 02-23-2006 04:09 :: MM_DEVILS :: Replies: 6 :: Views: 1364
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 :: 12-08-2006 12:38 :: jian :: Replies: 3 :: Views: 555
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 :: 12-14-2006 23:10 :: jian :: Replies: 7 :: Views: 935
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 :: 12-15-2006 11:19 :: jian :: Replies: 7 :: Views: 2056
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 :: 12-18-2006 17:18 :: jian :: Replies: 1 :: Views: 995
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 :: 01-09-2007 16:37 :: jian :: Replies: 5 :: Views: 891
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 :: 01-13-2007 19:17 :: jian :: Replies: 7 :: Views: 757
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 :: 07-11-2007 12:24 :: jian :: Replies: 8 :: Views: 961
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 :: 09-10-2007 12:53 :: jian :: Replies: 9 :: Views: 1469
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 :: 02-10-2008 07:01 :: dissa :: Replies: 9 :: Views: 3926
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 :: 01-03-2008 03:51 :: junta99 :: Replies: 10 :: Views: 1919
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 :: 04-01-2008 10:13 :: rf-en :: Replies: 3 :: Views: 621
How can assign boundary to finite ground plane?
Electromagnetic Design and Simulation :: 05-26-2010 03:03 :: dragonhamada :: Replies: 4 :: Views: 1401
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 :: 05-16-2008 15:32 :: nazanin :: Replies: 1 :: Views: 577
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 :: 06-05-2008 08:41 :: Leilon :: Replies: 1 :: Views: 565
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 :: 06-10-2008 21:38 :: jian :: Replies: 2 :: Views: 1515
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 :: 02-18-2009 03:50 :: shameemkabir :: Replies: 1 :: Views: 715