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## Finite Substrate ie3d |

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37 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 :: 16.01.2004 01:26 :: whtu :: Replies: **1** :: Views: **1050**

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 :: 27.01.2006 16:23 :: danda821 :: Replies: **15** :: Views: **1856**

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 :: 05.03.2008 13:56 :: d2_asimov :: Replies: **4** :: Views: **935**

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 :: 12.03.2009 13:06 :: plasma :: Replies: **2** :: Views: **1155**

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

Electromagnetic Design and Simulation :: 05.07.2009 11:48 :: eng_romeo :: Replies: **0** :: Views: **826**

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 :: 11.10.2003 22:06 :: loucy :: Replies: **16** :: Views: **2523**

Hello Everybody:
I'm trying to simualte an antipodal Vivaldi antenna on **ie3d** but I don't know how to do it.
I would like to import both faces from two different dxf files, so inferior.dxf goes under the **substrate**, then the subtrate and the superior.dxf. I'm tryng to simulate a **finite** **substrate** big enough to hold both (...)

Electromagnetic Design and Simulation :: 03.01.2006 12:31 :: Buqpa :: Replies: **3** :: Views: **1466**

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: **1038**

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 :: 18.12.2006 17:18 :: jian :: Replies: **1** :: Views: **965**

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 :: 09.01.2007 16:37 :: jian :: Replies: **5** :: Views: **850**

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 :: 26.07.2008 20:16 :: jian :: Replies: **3** :: Views: **960**

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 :: 29.08.2008 11:05 :: jian :: Replies: **3** :: Views: **1268**

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 :: 16.10.2008 10:39 :: mortarman :: Replies: **0** :: Views: **1072**

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 :: 18.11.2009 03:46 :: eng_romeo :: Replies: **1** :: Views: **1043**

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 :: 30.11.2009 20:50 :: eng_romeo :: Replies: **1** :: Views: **1218**

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 :: 10.08.2004 06:15 :: covenlink :: Replies: **1** :: Views: **1799**

HI
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: **2323**

Hello everyone,
I am trying to model a very simple structure in HFSS at 95 GHz. It is a half-wave dipole on a dielectric **substrate** (εr=28). I would like to model the **substrate** as extending to -Inf in the z direction and from -Inf to Inf in the x and y directions.
I was hoping that I could accomplish just that by terminating a (...)

Electromagnetic Design and Simulation :: 18.05.2005 12:39 :: icodreanu :: Replies: **1** :: Views: **1294**

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 :: 22.11.2005 11:39 :: jian :: Replies: **11** :: Views: **1608**

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 :: 01.02.2006 09:11 :: g86 :: Replies: **2** :: Views: **819**

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 :: 13.04.2006 12:05 :: adel_48 :: Replies: **2** :: Views: **1198**

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 :: 25.04.2006 12:17 :: ddkrishna :: Replies: **2** :: Views: **560**

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 :: 14.12.2006 23:10 :: jian :: Replies: **7** :: Views: **904**

Hi there,
I'm using **ie3d** to do simulation in rectangular patch antenna. I'm faced some problem which is modelling of an probe-fed patch antenna with in**finite** ground plane. I'm cannot place the feed point to the patch. And i'm checked the **ie3d** manual that have not this example, only in**finite** ground. So below is my results (...)

RF, Microwave, Antennas and Optics :: 15.12.2006 03:22 :: Chest :: Replies: **7** :: Views: **1964**

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 :: 13.01.2007 19:17 :: jian :: Replies: **7** :: Views: **714**

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 :: 04.11.2009 09:20 :: gamba007 :: Replies: **3** :: Views: **2736**

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: **612**

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 :: 02.05.2007 11:02 :: jian :: Replies: **6** :: Views: **1315**

Hi, MRAJAHARSHA:
There are only two choices:
1. Make a hole on an in**finite** ground (define horizontal polygons on the in**finite** 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 different formulations to model it. However, there is no implemention for (...)

RF, Microwave, Antennas and Optics :: 10.09.2007 12:53 :: jian :: Replies: **9** :: Views: **1383**

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 :: 17.05.2008 14:55 :: sahar20 :: Replies: **2** :: Views: **877**

Hi,
I am trying to set up a model in **ie3d** for a printed dipole.
The problem is how to de**finite** the **finite** FR4 **substrate**.
Please help me.
Thanks!

Electromagnetic Design and Simulation :: 29.10.2008 05:11 :: mysonic :: Replies: **1** :: Views: **1130**

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 :: 09.02.2009 04:35 :: shameemkabir :: Replies: **3** :: Views: **1221**

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: **672**

Hi all!
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 is Lg=3

Electromagnetic Design and Simulation :: 02.07.2009 14:11 :: clark09 :: Replies: **0** :: Views: **1039**

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 :: 05.12.2010 05:26 :: sameerccs11 :: Replies: **6** :: Views: **1105**

For **ie3d**, it defines an in**finite** ground plane. Will this affect the accuracy of the result??
Thanks.
It is true what mahojazz suggested. In my view, you can start with **ie3d** since it is very easy and fast to design an antenna with air **substrate**. After you are happy with the results from **ie3d**, you can (...)

RF, Microwave, Antennas and Optics :: 11.11.2007 09:24 :: ckJJ :: Replies: **5** :: Views: **1814**

What do you mean half ground plane? On **ie3d**, you can define in**finite** ground on **substrate** or you can define **finite** ground plane using some polygons. If it is semi-in**finite** ground, you need to use **finite** ground to model it. You just add some polygons to represent the **finite** (...)

Software Problems, Hints and Reviews :: 16.05.2008 15:32 :: nazanin :: Replies: **1** :: Views: **552**

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