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25 Threads found on ie3d Optimization
how do i optimize the axial ratio of a coaxial fed patch, i cut two notches on the patch and now i want to optimize the dimensions of notch to get axial ratio below 3dB using the optimization function in ie3d zeland. please advise me on how to use the optimization function in zeland
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
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
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
But i noticed that by changing the length in ie3d, the graph of s11 vs frequency changes and also the value of optimum chamfering changes. Shouldn't it be independent of length according to the formulae? Yes, it should be independent. Did you shift the port reference planes to the bend?
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
there is an example also, in ie3d 8x8 array of patches with printed power divider. pl
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 (...)
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 (...)
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 (...)
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, 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
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 (...)
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, 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.
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 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
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 jian I think you have to consider user friendly algorithm to simplify parameter entry by building table that include all the parameters that we assign during creation of layout. I think it will be very helpful and huge improvement to ie3d like Neil Armstrong said "That's one step for ie3d; One giant leap for US." pl
Hello, guys. I am a college student and new to antenna design. Right now I am working on a Printed Antenna project on PCB. Last semester I have done some simulations by using Zeland ie3d. Now I am asked to make a PCB and do some measurements. Since I am not very familiar with the PCB technique, I am wondering what kind of softwares are suita
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
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 (...)
Complex normalizaiton impedance (Zc) is not good. There are many issues involved. We know that Gamma = ( Z - Zc ) / ( Z + Zc ). When Z = Zc and Zc is real, we get Gamma = 0 meaning no reflection. However, if Zc is a complex value, the formula for Gamma is doubtful. You can not expect Gamma = 0 with Z = Zc. I know ADS uses some revised formula on th
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
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 ??