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About oussama1

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  1. oussama1

    Simulating 4D antenna array (time modulated array)

    Can you just explain how can we generate square periodic function in POST FEKO?
  2. oussama1

    MoM singularities problems

    hello@JIF I want to tell you that the software FEKO and your suggestions have helped me to solve the problem that we have discussed above(about one year ago). As consequence, I have written a paper about this problem. this paper is just published in IEEE Transactions on Electromagnetic Compatibility, which is a very good journal. the paper link is O. Gassab, L. Zhou, Z. Zhao and W. Yin, "Effect of the Scattered Field on the Terminal Risers in Twisted-Wire Pairs With Floating Loads," in IEEE Transactions on Electromagnetic Compatibility. https://ieeexplore.ieee.org/document/8600362 the resonance frequencies that appear in the DM response is due to the Scattered field effects that were neglected in the transmission line model. Now with this paper, the tranmission line model is improved. thank you for your help, and your software FEKO is very amazing. Oussama Gassab
  3. oussama1

    Simulating 4D antenna array (time modulated array)

    Hi again is it possible to use a periodic function in time analysis in post feko? because the time modulated linear array (TMLA) uses periodic sequences (on-off). it means that I simulate the antenna array in large enough range of frequencies, then in post feko I use the required periodic function for each element. is that possible? if not, I think you should do it possible in future versions of feko because it is so important in simulating TMLA.
  4. oussama1

    microstrip antenna array simulation

    thank you so much, I really appreciated your help and suggestions
  5. oussama1

    microstrip antenna array simulation

    hello, thank you so much it works. what was the problem in the model so that the Domian Green's function method cannot be used? is it the dielectric (separated)?
  6. oussama1

    microstrip antenna array simulation

    Hello @MvdM my version is old I think. it is suit 7 (2014). i will try to update it. however, i didn't understand your answer. can you explain more? please check the attachment in the first message to see the error. thank you in advance
  7. Hello every one i have created one E-shaped microstrip antenna and its simulation was fine. when I have generated linear array and error is appeared in the simulation. Questions: 1- how can we solve this kind of errors? 2- how can we extend the dielectric so that all the antennas share the same dielectric? your help and consideration are much appreciated the FEKO models are in the attachment E_antenna_arra_1.cfx
  8. hello everyone i would like to ask you if it is possible to simulate 4-D antenna array by using FEKO software. since 4-D antenna array uses time (off-on switches), time domain solution is needed. can we use FDTD to simulate this 4-D antenna array ? thank you
  9. oussama1

    Calculating the capacitance and inductance in FEKO

    hello again can you explain to us how can we obtain the per-unit-length capacitance of two parallel lines? each one has a coating. as you mentioned before, it is possible by using cable modeler, please explain to us all the steps in details thank you in advance
  10. oussama1

    Calculating the capacitance and inductance in FEKO

    From your answer, I can understand that it is not possible to obtain the per-unit-length capacitance matrix of any arbitrary transmission line system ( non-uniform transmission line). I hope that in the future edition you will improve FEKO so that it will have this feature. thank you,
  11. oussama1

    Calculating the capacitance and inductance in FEKO

    Hello, i would like to inform you that the cables had been build by using the construction button and '' Analytical curve'' as shown in the attached image. (not the cables button). can you explain in details how can we obtain the capacitance matrix for multi-cable system (any specific wire path can plotted using analytical curve button ) with and without coating dielectric. Sincerely,
  12. how can we calculating the capacitance and inductance matrices of multi-cable system in FEKO software ? for example 8- parallel wires, bundles of twisted wires pairs, micro-strip line, printed circuit board PCB