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46 Threads found on edaboard.com: Optimization ie3d
Hi Jian Do you have in the ie3d 11. the ability to parameterize the structure for making fast changes? it also can help us in optimization. and parametric study of the structure. Thank you v.m. PL
The s-parameters are always normalized to 50-ohms in simulation because we want to make the s-parameter file to be compatible with Touchstone. However, you can re-normalize it to other ohms when you display teh s-parameters. When you do optimization, you can optimize s-parameters normalized to other ohms.
Hi, mwagner: There are multiple schemes in ie3d to do so. ie3d's default editor MGRID allowsyou to define the locations of some vertices as optimization variables. From the vertices, you can control the shape of your structure. However, MGRID does not allow you to specify the width and length or those high level geometry parameters because (...)
Hi Jian, I tested the latest release of ie3d and tried to optimize a very simple structure with only one variable whose port is of "extension for wave" type. The aforementioned problem still resists. Here is the content of the log file: ---------------------------------------------------------------- optimization Geometry: *:\zel_test\wavep
HI, Winglj: (1) I seems to me your procedure is correct. You are supposed to be able to define a probe location as an optimization variable. Yes. You should select all vertices on all layers for it. This procedure is shown in the Zeland Virtual Training in . (2). Please define the Negative Level at the ground (z=0) and Positive leve
is there someone that can give me some help? how to design variable and optimize it? best regards!
(1) ie3d FastEM Design Kit for real-time full-wave EM design: ie3d FastEM Design Kit allows you to parameterize both planar and 3D structures, perform high accuracy and efficiency ie3d simulations on the structure, and extract the FastEM signature from the simulation results. The FastEM signature allows you to perform real-time EM (...)
Hi, Plasma; Yes. ie3d/MGRID 12.01 has a crashing problem due to an optimization in the code. We turned off optimization for a section of code and it is released in 12.02. Best regards,
Does any people have made a matlab problem which can do optimization and call ie3d to do stimulation??I have great difficulty to do this.Please help!!!It is very important to me.:cry:
Hi I am simulating a bandpass filter with ie3d9.0. During the optimization with the gap between the coupled resonator cells, ther are much difference between the trend and what I want with the curves of s21 and s11. Total three parameters need to be optimized, which are local parameters. But I wonder How to balance every local parameters in thi
Hi, Mengjum: On the polygon based layout editor MGRID, you can only define the xy coordinates of a group of vertices as one optimization variable. You can also assocate the xy coordinates of multiple group of vertices with one variable. However, you can define the z-coordinate as an optimization variable on MGRID. Once we were thinking about to
Hi, Kbmanick: I think you need to design and optimize your feed network for it. You should try to use the SIMULATE AND FIND EXCITAITON feature of ie3d/MODUA. It allows you to find the output power at each port of your array. It should be useful for array's feed network and power distribution optimization. Regards.
ie3d, ZDS and ZDM Version 12.1 zeland said We are pleased to announce the release of ie3d, Zeland Distributed Server (ZDS) and Zeland Distributed Manager (ZDM) Version 12.1 for high performance network distributed EM simulations and optimizations. ie3d, ZDS and ZDM 12.1 feature: (1) ie3d FastEM (...)
Yes. FastEM tuning and optimization are discussed in the ie3d's user's manual. It is mainly on the polygon editor or MGRID. In fact, it can be done even easier on ie3dLIBRARY. FastEM involves 3 procedures: 1. Parameterization (different on MGRID and ie3dLIBRARY). 2. FastEM Preparation (same on MGRID and (...)
Hi, micro_tech: It really depends upon what are your requirements. 1. You will need to define some dimensions of the structure as optimization variables. For example, for a simple patch, you define the size of the resonating edge as an optimization variable. You can define the feed location as another optimization variable. You have (...)
Hi, djim: I checked your structure. The problem is in the connection between the feed line and the elliptical patch. They have only one common vertex but no common edge. They are disconnected. I have fixed the structure as pcp_r2.geo in the attached files.zip. I also created a parameterized model pcp_r3.ie3 on ie3dLIBRARY. All the major d
Hi, sensen9966: There are multiple ways to control the shape and location of structures in ie3d. 1. MGRID: MGRID is polygon based editor. You can construct a structure as a set of polygons. You can select some vertices or some polygons and use the EDIT->MOVE command to move the objects or change the shapes. You can also define the sele
hi, i downloaded ie3d evaluation copy frm and tried to simulate a stacked patch antenna. i can run simulation.but when i define some variable for optimization(say patch length) and give for optimization shows some error..saying...this process type is not optimization. kindly help me sort out this prob. with regards abhi
Does any people have made a matlab problem which can do optimization and call ie3d to do stimulation??I have great difficulty to do this.Please help!!!It is very important to me.
Hi, rf-en: You may not be able to optimize the height on the polygon based editor MGRID. However, you can do it on ie3dLIBRARY. You can do sophistiicated parameterization and optimization on ie3dLIBRARY. By the way, you should upgrade to ie3d 14. The ie3d 14 has integrated layout editor, visualization and (...)
i am implementing a u-slot in my paper and after that a trough-slot shaped patch can any help hoe to do i ie3d Also what optimization can be done can u give me any u-slot ie3d files
Hey friends I am working on the optimization algorithms , and I try to use the ie3d to optimize antennas, How I can read and write the sim and geo files of ie3d by matlab? Thanx in advance Regards
Hi all, I m using ie3d to optimize chamfer bends at a particular frequency. In KC gupta's book on microstrips some relations have been given for optimum chamfering of microstrip bends. These relations are dependant only on width and height, but not on length of arms. But i noticed that by changing the length in ie3d, the graph of s11 vs frequency
i want to know what is Powel optimizer and E.M.optimization In ie3d.and how can i use it. i have design a sqaure patch which has two slots. i m getting two frequencies 1st is 2.4298,return loss(-13.86) and 2nd is 3.2 return loss(-8.84).i want to use powel optimizer and E.M. optimizer on how can i use it plz guide me
dear all i m facing some problem in optimizing the resonant frequency of a coaxially feeded microstrip antenna using Powel Optimizer in ie3d simulator. anybody can tell me........................ i hv already varified the optimization of the resonant frequency of a microstrip line feeded microstrip antenna using Powel Optimizer in ie3d
Respected all, Hello. I am designing a stacked and slotted antenna using ie3d. the same structure when i simulated with FEM based HFSS, gave me four resonances, the result of ie3d is also giving me four resonant points, but the problem is that the RL at two of the four frequencies is less than (above) -10dB. So i decided to assign the probe fee
It seems to me that Sonnet and MWOffice give the same results when the circuit fits into a uniform rectangular grid. The main difference between these two is Sonnet provides a "diagonal fill" for irregular geometry, but this doesn't always improve the accuracy. Sonnet also offers some optimization features--sweeping some geometry parameters automat
Anyone has expeniences in using genetic to built or design antenna?? Is GA is useful?? Moreover anyone know how to do the optimization in ie3d?? I mean write your own GA program to call ie3d to do the optimization or draw random structure ??
Thank you,eirp! Can ie3d do further optimization?Because the performance doesn't meet the requirement. Hi, STD! Of course, it can!! What are exactly the requirements? Results above doesn't meet it? Regards, eirp
Hi, max! Why you simply don't perform an optimization (for example in ie3d?)?? Your project has a low degree of freedom, you'll get answer quickly!! Regards, eirp
Zeland's FilterSyn is another powerfull tool. synthesis is based on genetic optimization, and results is with 1E3D IE MoM core, one of the best in the market. marti
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 parameters
Hi, new version of this wonderful software is just released Some of the highlights include: - 3D Graphs - Edit-in-place for layouts - Support for multi-element editing - New extraction/optimization methodology for EMSight - New bondwire model and many other new models - Integration of Zeland's ie3d in the EMSocket - Muc
Hi, I think your main mistake (which is very common actually) is that in HFSS in case of Microstrip lines, the port size changes the results. So you must adjust the port size to get an input impedance of 50 ohms, which is actually not a very pleasant task. also you should check the convergence and increase the maximum number of passes in case o
hi Adel_48 Hi, You may try to use ie3d with corners as variables, then use its built in optimization routine to get the best design. BR Adel_48 if i want to use my own GA program, can ie3d can be embeded in my program?and if i want to optimize more parameters, can i use ie3d built-in (...)
Hi I have a suggestion for you. for a microstrip filter Microwave Office,CST,ie3d are good choice for comfortable and fast optimization. but they are not accurate.of course CST is better in some extent. on the other hand HFSS is very accurate but time consuming. A good approuch is to primerily analyse and optimize your structure with faster so
Hi, I beleive that ie3d is a good choice for printed antenna, for construction a printed antenna, after simulation and optimization, you must to export your antenna layout in dxf or dwg format then after any required modification in AutoCAD, you can send it for preparing photoplot and etching on PCB. Regards KMPA
Hi, caocao: Yes. Theoretically, you can optimize for null for the current density distribution. In the implementation, ie3d does allow you to access the current density data on MGRID in current distribution visualization. However, it may not be in the optimization loop unless you want zero current at a specific port. You can optimize for zero cu
What do you mean mim modeling? Do you mean MIM capacitor modeling. MIM capacitors are a kind of structures encountered much in MMIC and RFIC. MIM capacitors are tough to model. You can use ie3d for high accuracy and high efficiency results for MIM capacitors as well as spiral inductors. You also even use it for a real-time EM tuning and optimizatio
i work on dsg with ADS momentum. its not 3D but serves the objective, optimization and tuning is possible as well. no idea about others
Hi there, I am using ie3d to simulate a antenna design. My design is parameterized in ie3dLibrary for optimization purposes. However if I want to simulate the circuit with a finite dielectric plane, I have to export the design into MGRID and then manually change the design so it represents a finite dielectric. Is it possible to (...)
EM software optimization is very slow. Try to model the structure in circuit and optimization in circuit.
Good Day everyone, I'm from Malaysia and currently doing a project on: "optimization of Microstrip Patch Antenna Using Particle Swarm optimization" i have done the literature review on PSO and pratical training, doing exercise on antenna design using ie3d.for ie3d antenna design software i still can handle it, but for (...)
PSO is some kind of global optimization scheme. It should be quite good for some sophisticated optimization. Like Gentic optimizer, it does require large number of iterations. It will need to do many sampling. It is good to use ie3d to drive it because of the efficiency and accuracy. It is documented on the Appendix of the user's manual on (...)
Parallel Processing of Powell?s optimization Algorithm and its Application to Design of Multi- Way Power Dividers Mitsuyoshi KISHIHARA*, Kuniyoshi YAMANE*, and Isao OHTA** See this IEEE paper. They have shown how to make it
If you are not doing optimization, the best way to generate such a structure is to use the .3DT format documented in the Appendix. You can use Excel, Mathlab or whatever software to create the pattern of shapes and import it thru .3DT format. It is very simple. If you want to define the size as optim variable, then you will need to use ie3dLIBR