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43 Threads found on Finite Ground ie3d
Hello, In ie3d first I am using the patch with Infinte ground plane. The results were quite good.But when I use the finite ground the results are not upto the mark. Can any one suggest that how can I include the finite ground in microstrip antenna. and after inserting it what is the (...)
Hello everyone.. I need some help in implementing chip resistor in a patch antenna in ie3d in vertical direction i.e between the top metal patch layer and the finite ground plane in vertical direction. I am doing this for reducing size of the antenna.. Thank you..
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 (...)
hi, 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
hello 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 (...)
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
In case of horizontally-finite groundplane, you can first define a metal type of 1-mm thickness, then assign the finite groundplane to this metal type. In case of infinite groundplane, there is no way to realize this in ie3d if the groundplane is highly (...)
finite dielectric has nothing to do with ground plane. In other words, you can have either infinite gnd plane or finite gnd for finite-dielectric model in ie3d.
you must be having different substrate 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
For infinity gnd plane anything drawn on it will be treated as a slot. For finite gnd just cut slot like top patch.
Hello, 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 (...)
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 "" 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 (...)
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, (...)
Hi, 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? (...)
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 (...)
Hi everyone, 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??? Thanks,
Hi Jian, 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 (...)
Hi lovhana The difference, between simulations using infinite 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 (...)
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.
Is it possible to modify a ground plane using ie3d software. Is it possible to design a W shape ground plane using ie3d software.?? yes it is possible. Initial step is to define infinite ground plane to finite and then proceed (structure polygon) with respect to your (...)
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 (...)
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 (...)
Dear friend, 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?
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. (...)
Define a layer's sigma to a very large value for infinite ground. then Define a finite ground as some polygons.
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 regards, balaguru.
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 (...)
Hi, junta99: I believe either the "probe-feed to patch" parameters are not correct or you may not define the finite ground plane correctly. You can send your .geo file and tell your "probe-feed to patch" parameters to me ( and I can help you. Regards.
Hi, ckjj: By default, you can use infinite ground on ie3d. You should get very accurate s-parameters or input impedance normally. Pattern may be different due to infinite ground. If you want to get more accurate pattern, you should define finite ground. You nromally will (...)
Hi, MRAJAHARSHA: 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 (...)
Hi, Jayanthi: Please check the fabri.geo. The shorting pin is not electrically connected to the finite ground. By ie3d definition, you do need to have matching vertices to get guaranteed electrical connection. best regards, Added after 2 hours 53 minutes: Hi, jayanthi: I did not have time to revise
Hi, Kishorekumar: Normally, finite ground plane will degrade circular polarization. Best regards,
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 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 (...)
Hi, Pennylsn: 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 (...)
Hi, jayanthi: 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 (...)
Hi, gw_uestc: On ie3d, you can define periodical boundary conditions if you have complete periodical structure. If the structure is finite, I think you have to run it as a full structure. Regards.
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
Hi, pegasuss: (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 (...)
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 (...)
hi, i am trying to simulate a grounded CPW structure with the specs. given below, in ie3d upto 50 GHz. ie3d is giving some medium warnings - saying the port separation factor for the ports are too big and suggesting that i should reduce the distance between the positive and negative ports. wat should i do?? in that case, should i (...)
how i can define GCPW with finite ground in ie3d ?
HI Ansoft ensemble and ansoft designer are not suitable for simulation of structures with finite ground plan.ie3d is better.
Hi... The error may be due to the infinite substrate. change to air may be obtain better result