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## Finite Substrate ie3d |

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1000 Threads found on edaboard.com: **Finite Substrate ie3d**

Hi,
Does anybody know how to define **finite** **substrate** in **ie3d** 10.1 ?

Electromagnetic Design and Simulation :: 01-16-2004 01:26 :: whtu :: Replies: **1** :: Views: **1087**

HI,
I am wondering if I can define **finite** **substrate** in **ie3d**. I find the default **substrate** size is too big. Thank you.
danda821

Electromagnetic Design and Simulation :: 01-27-2006 16:23 :: danda821 :: Replies: **15** :: Views: **1895**

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 (...)

Electromagnetic Design and Simulation :: 03-05-2008 13:56 :: d2_asimov :: Replies: **4** :: Views: **960**

Hi lovhana
The difference, between simulations using in**finite** **substrate** and **finite** **substrate** with ground, is that you get nulls all around in 90° because there is no energy beyond the ground. And No back lobes that exist in **finite** **substrate** with ground plane.
there is differenc in the (...)

Electromagnetic Design and Simulation :: 03-12-2009 13:06 :: plasma :: Replies: **2** :: Views: **1169**

Dears,
I have a question how can i draw **finite** **substrate** frame in **ie3d** software?
Thanks.

Electromagnetic Design and Simulation :: 07-05-2009 11:48 :: eng_romeo :: Replies: **0** :: Views: **839**

Does anyone know how to define edge ports for a **finite** **substrate** microstrip fed patch antenna.? Anyone who has tried it would know that port edges have to share faces and then there is the negative and positive face story to complicate matters.
THe FEKO guidetries to explain but there is no example to show how it's done. Microstrip ports won'

RF, Microwave, Antennas and Optics :: 11-04-2009 09:11 :: gamba007 :: Replies: **5** :: Views: **1387**

Hi everyone,
I'm simulating an microstrip antenna (attachment), with microstrip line feed, in feko software.
First i simulated the antenna in a in**finite** **substrate**, but right now i'm trying to do it in a **finite** one.
Its a **substrate** with dielectric constant = 5; height = 1.6mm.
But i'm having problems with the ports, (...)

RF, Microwave, Antennas and Optics :: 11-18-2010 05:23 :: jmga9 :: Replies: **4** :: Views: **1005**

Yes, it uses in**finite** GND for simulation, not **substrate**.They are not same things.
In order to constraint this, you can use Momentum Box but I'm not sure that would work or not for antenna simulations..

RF, Microwave, Antennas and Optics :: 09-30-2013 15:42 :: BigBoss :: Replies: **2** :: Views: **376**

Hi, 2cent:
It ist just 2 steps:
1. Define the dielectric type and remove the in**finite** 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.
Regards.

Electromagnetic Design and Simulation :: 08-29-2008 11:05 :: jian :: Replies: **3** :: Views: **1309**

It seems to me the in**finite** **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 (...)

Electromagnetic Design and Simulation :: 10-11-2003 22:06 :: loucy :: Replies: **16** :: Views: **2540**

Hi, Bugpa:
Please note the following fact for using **ie3d** for an antipodal Vivaldi antenna. If you model it as in**finite** **substrate**, you should be able to get resaonable s-parameters. However, the pattern may not be good because the main beam is in the in**finite** **substrate** direction. **ie3d** has (...)

Electromagnetic Design and Simulation :: 03-28-2007 11:37 :: jian :: Replies: **3** :: Views: **1491**

Hi, Wavenumber:
1. What antenna is it? If it is a patch antenna with a reasonable size **substrate**, the radiation efficiency should normally between 50% to 90% in the resonance bandwidth. Surface wave is an important source of loss to efficiency. **ie3d** is normally quite accurate in predicting the radiaiton efficiency for such a case. If it is an an

Electromagnetic Design and Simulation :: 03-03-2006 13:27 :: jian :: Replies: **3** :: Views: **1083**

Hi, poyinting:
On **ie3d**, the scattering field is defined as the field scattered instead of reflected. When you define in**finite** **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 (...)

Electromagnetic Design and Simulation :: 12-18-2006 17:18 :: jian :: Replies: **1** :: Views: **989**

Hi, Jayanthi:
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 in**finite** extended **substrate**. If you use **finite** **substrate**, the dip will be gone while the overall pattern shape is still (...)

Electromagnetic Design and Simulation :: 01-09-2007 16:37 :: jian :: Replies: **5** :: Views: **877**

Hi, Authur568:
It should be due to the meshing density is not large enough or meshing may not be fully aligned. Meshing alignment is very important for **finite** dielectrics modeling. Also, we did not take into account of the Er of the **finite** **substrate** in estimating the waveguide wavelength. The Er of the **finite** (...)

Electromagnetic Design and Simulation :: 07-26-2008 20:16 :: jian :: Replies: **3** :: Views: **979**

Hello,
I am trying to simulate a coaxial-probe-fed microstrip patch antenna to achieve some proven data.
I am using **ie3d** EM Design System , Version 14.04.
I used **finite** groundplane by defining No0. layer's conductivity to be 0, then drawing a rectangle as the metal ground.
I used the method from section 16.2 of the **ie3d** manual to (...)

Electromagnetic Design and Simulation :: 10-16-2008 10:39 :: mortarman :: Replies: **0** :: Views: **1098**

Dears,
Please help me to solve the problem of UWB antenna design , error message appeared to me when i pressed on simulation button and this message told me " The magentic current modeling with **finite** dielectrics has not been implemented."
I attached file design and snap shoot for error message.
Thanks,

Electromagnetic Design and Simulation :: 11-18-2009 03:46 :: eng_romeo :: Replies: **1** :: Views: **1076**

can anyone pls suggest me how to select **substrate** dimension (**finite**) on **ie3d** 12.0

RF, Microwave, Antennas and Optics :: 01-16-2014 02:24 :: rameshshukla :: Replies: **0** :: Views: **144**

i've run several models (both monopole and dipole) using the vertical port definition and have gotten some impedance results that i just cant believe. what kind of considerations must i entertain when using the vertical port? i attached a typical model which has a vertical port defined from 100 mils to 0 mils with in**finite** GP at 0 mils.
also

Electromagnetic Design and Simulation :: 05-05-2005 13:35 :: ghb :: Replies: **1** :: Views: **790**

Dear h.f,
here are some small guidelines,
try not to use FEM codes such as HFSS except for small antennas otherwise the simulation time would be extremely long.
The best software for this purpose are **ie3d** which has a trial version but does not support **finite** **substrate** (at least untill version 10) , CST Microwave studio and XFDTD. (...)

Electromagnetic Design and Simulation :: 04-13-2006 12:05 :: adel_48 :: Replies: **2** :: Views: **1225**

the feko online/user manual explains how to define an edge port.The example folder of feko also contains a few examples for an edge fed rectangular patch antenna.
That is true but only for ini**finite** **substrate**s. There are are no SEP examples with an edge port for a **finite** **substrate**!

Electromagnetic Design and Simulation :: 11-04-2009 09:20 :: gamba007 :: Replies: **3** :: Views: **2793**

Hi, Alberich:
It looks like you use the in**finite** **substrate** model of **ie3d** for this antenna. It is excellent for antennas radiatng mainly in other than 90 degree angles. However, The null at 90 degree s caused by the in**finite** **substrate**. You may want to use **finite** **substrate** (...)

Electromagnetic Design and Simulation :: 05-02-2007 11:02 :: jian :: Replies: **6** :: Views: **1332**

is it possible in momentum that we can specify a large metal box under a **finite** size **substrate**?
Yes, you can define a **finite** sized box around your **substrate**.This box will have walls with perfect conductors.
Look at drop down menu in layout: Momentum-->Box-Wavguide-->Add Box

RF, Microwave, Antennas and Optics :: 05-20-2011 11:42 :: BigBoss :: Replies: **9** :: Views: **2311**

Dears,
I made design of UWB antenna with **finite** **substrate** and microstrip feed line , i want to know if there is any mistake in drawing (specially for **finite** **substrate** and port feed on edge) and the result of simulation takes much time , i attached file that have Hexagonal Antenna for UWB applications.
UWB antenna (...)

Electromagnetic Design and Simulation :: 11-30-2009 20:50 :: eng_romeo :: Replies: **1** :: Views: **1247**

How does to determine the dimensions of the **substrate** in ADS ?
**substrate** size is simulated as in**finite**.

RF, Microwave, Antennas and Optics :: 04-16-2012 13:32 :: volker_muehlhaus :: Replies: **8** :: Views: **562**

hi all,ater i put PML layers ,in quasi yagi design,there is an error i ignore it,i put it after i put air walls that due to limit ground and **finite** **substrate**.what is error in my design
regards

Electromagnetic Design and Simulation :: 01-15-2005 16:18 :: abdoeng :: Replies: **0** :: Views: **644**

Hi, jayanthi:
Yes. Your antenna is radiating strongest at theta about 50-60 degrees. Why is it radiating the strongest at that angle? It really depends upon how the current distribuning on your structure. It is hard to give any simple explanation. The current is distributing in such a way that the radiation at the angle is the strongest. If you

Electromagnetic Design and Simulation :: 03-01-2007 11:48 :: jian :: Replies: **1** :: Views: **738**

I have been using FEKO to try to simulate a fat dipole antenna for wideband ground penetrating applications. Using the in**finite** green's function to model the **substrate**, air, then sand (in that order), I get very good results in the far field, 8 decibels max and very directive. However, when I try to use a **finite** **substrate** (...)

Electromagnetic Design and Simulation :: 08-10-2007 16:39 :: gandalf85pwned :: Replies: **2** :: Views: **1925**

I think **ie3d** is faster than HFSS in analysing slot antennas.
HFSS: **finite** elem.
**ie3d**: MoM.

RF, Microwave, Antennas and Optics :: 10-13-2008 06:45 :: si14 :: Replies: **8** :: Views: **2319**

Does anyone know how to define edge ports for a **finite** **substrate** microstrip fed patch antenna.? Anyone who has tried it would know that port edges have to share faces and then there is the negative and positive face story to complicate matters.
THe FEKO guidetries to explain but there is no example to show how it's done. Microstrip ports won'

Electromagnetic Design and Simulation :: 11-04-2009 09:44 :: gamba007 :: Replies: **0** :: Views: **1293**

Hi mr shern,
in 5.2 you can replace the **substrate** with green functions (e.g. multi-layer **substrate**) and keep the **finite** PEC gnd plane. Waveguide port may only work at higher feko versions.(I'm not sure) From your diagram, which looks like a microstrip feed. You can create an additonal PEC plate that connects to the ground and the (...)

Electromagnetic Design and Simulation :: 12-17-2009 12:20 :: Element7k :: Replies: **5** :: Views: **2397**

which package do you mean as EM simulator?
It depends if you want to include the "edge of the **substrate**" effect, i.e. **finite** **substrate** size.
Maybe it is good enough to simulate with in**finite** **substrate** size -> planar simulator like Momentum.
do you have any idea to model it on

Electromagnetic Design and Simulation :: 12-30-2011 11:02 :: volker_muehlhaus :: Replies: **10** :: Views: **1116**

Here is what i learned from FEKO LITE:
1) Do not forget to make UNION, to connect all your microstrip+wire+ground. Select them all and press union. And their type must be CONDUCTOR.
2) When you using in**finite** **substrate** (Solution>In**finite** Planes), it is easy to use microstrip port directly on your microstrip structure.
3) When you (...)

RF, Microwave, Antennas and Optics :: 07-12-2014 00:14 :: Terminator3 :: Replies: **1** :: Views: **228**

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 in**finite** 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: **1244**

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: **692**

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 **substrate**s. OK
I can add tracks. OK
Basically its two "H" shapes like this:
H
H
Where the top of the "H" (squared off U shape) is on the top of the PCB and bottom of the "H" (...)

Electromagnetic Design and Simulation :: 08-10-2004 06:15 :: covenlink :: Replies: **1** :: Views: **1829**

HI
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: **2410**

If there is any way you can get hold of Agilent Momentum or Zeland **ie3d**, those will be much better tools for this problem. The in**finite** dielectric comes for free. No worry about PMLs and you just mesh the surface of the metal of your circuit. Excitation is very easy too, just specify a port and let it analyze. I view **ie3d** as faster and (...)

Electromagnetic Design and Simulation :: 05-18-2005 20:55 :: rautio :: Replies: **1** :: Views: **1314**

First of all I introduce myself. I am a student doing my thesis working in Antenas Design, and i dont know a lot of things about it.
I have designed and simulated an antenna with the CST and **ie3d** software, using the Cuclad 217 as **substrate**.But in the next step i must use the EBG as **substrate**. Do you know how can I do this?
Do I need (...)

RF, Microwave, Antennas and Optics :: 11-16-2005 06:45 :: vampeti :: Replies: **1** :: Views: **1056**

Hi, Adhi:
Here are some models (edge fed, in**finite** 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 (...)

Electromagnetic Design and Simulation :: 11-22-2005 11:39 :: jian :: Replies: **11** :: Views: **1645**

Hi everyone.I am a new user of **ie3d** program.I am good at drawing different structures.But i always have problems while adding **substrate** layers and metalic ones.I looked **ie3d** benchmark and tried to make the structures.For example
**substrate** thickness = 0.127 mm, permittivity = 9.9, permeability = 1
Conductor thickness = (...)

Electromagnetic Design and Simulation :: 12-08-2005 12:48 :: pegasuss :: Replies: **1** :: Views: **688**

For in**finite** gnd and **substrate**
1. You need to change the connector dia according to requirement.
2. Change feed impedance to 100 in Modua
For **finite** gnd and **substrate** just draw the entire feed including inner and outer conductor of the coaxial probe.
Hi to all,
I am presently engaged in design of folded (...)

RF, Microwave, Antennas and Optics :: 02-01-2006 09:11 :: g86 :: Replies: **2** :: Views: **852**

I have few doubts in simulating phaseshifters based on BST in **ie3d**
* Can materials like BST (εr= 2100) be simulated in **ie3d**?
* How to define **finite** dimensions of a dielectric **substrate** in **ie3d**, like for simulating a planar structure with dielectric covering only a small portion of the structure?
It (...)

Electromagnetic Design and Simulation :: 04-25-2006 12:17 :: ddkrishna :: Replies: **2** :: Views: **583**

Hi, Pennylsn:
It is simple. For example, you have draw the **finite** ground (or define an in**finite** 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 END Z-COORDINATE = 0 an

RF, Microwave, Antennas and Optics :: 12-14-2006 23:10 :: jian :: Replies: **7** :: Views: **919**

Hi, Chest:
From the look, it seems that it is modeing a **finite** ground patch in the manual while your built is modeling a patch on in**finite** 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 represent a **finite** ground before (...)

RF, Microwave, Antennas and Optics :: 12-15-2006 11:19 :: jian :: Replies: **7** :: Views: **2014**

Hi, Kishorekumar:
Normally, **finite** ground plane will degrade circular polarization.
Best regards,

RF, Microwave, Antennas and Optics :: 01-08-2007 18:34 :: jian :: Replies: **1** :: Views: **633**

Hi, Chest:
I don't see serious problem in your structure. I tried the **finite** ground plane model on it. It is slightly different from the in**finite** 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: **738**

Hi, rc5:
1. There are some movies on the web site you can watch to see how **ie3d** is being used.
2. At this time, **finite** dielectrics is not implemented into the **ie3d**LIBRARY interface. You can only define them in MGRID.
best regards,

Electromagnetic Design and Simulation :: 04-04-2007 00:08 :: jian :: Replies: **1** :: Views: **631**

Define Port or Port for Edge group --> In**finite** 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
regards,
balaguru.

RF, Microwave, Antennas and Optics :: 03-28-2008 03:19 :: balaguru thavamani :: Replies: **1** :: Views: **965**

I simulate an antenna with **substrate** of large thickness(more than 10mm at 10GHz), and use the in**finite** ground plane, and advanced extension port, so how can I set up the the port to avoid the warning " the **substrate** thickness factor for port is too big",and "the ground separation/length radio for port is too big", and could get the high (...)

Electromagnetic Design and Simulation :: 05-17-2008 14:55 :: sahar20 :: Replies: **2** :: Views: **917**

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