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Recent content by mirou

  1. M

    Are there articles for a multiobjective optimization of RFID systems used in body networks?

    Hi researchers, i'm working on the multi-objective optimization of RFID systems used in wireless body networks. Are there some who can help me with scientific papers that talk about a mathematical modeling of the multiobjective optimization problem of this type of problem. Knowing that I have...
  2. M

    how to plot Z11 parameter

    Hello Kthackst, yes thank you i try and it works. Thank you very much :)
  3. M

    how to plot Z11 parameter

    Hello everybody, I hope everything will be fine. Somebody can help me? Do you have any idea how to realize the Z11 curve in HFSS with its real and imaginary part as indicated in this image right above. thank you in advance
  4. M

    Combining radiation pattern

    Hello Dear Bukero, I try to change sweep but no way you mean the sweep of frequency ? Can you send to me the steps ? and thanks in advance
  5. M

    Combining radiation pattern

    Thank you fro your reply, if any body have used HFSS answer me and thanks
  6. M

    Combining radiation pattern

    Hello every body , i simulate a structure and now i want to combine many radiation pattern with them using HFSS i can't do it any body can help me ?i want to do like this : Each time I modify a dimension and I register the radiation diagram until finding a same diagram which contains several...
  7. M

    Improve s11 of pifa antenna

    Hello Vfone, Thank you, i finished the work with better return loss s11=-12 db.
  8. M

    Improve s11 of pifa antenna

    Hello Vfone, Thank you for your reply. Ok i understand you. For the width i must increase or decrease it and for the position of feeding point too.
  9. M

    Improve s11 of pifa antenna

    Hello Dear BradtheRad, i can't understand you. But just i want to improve the value of s11 to become < -10 db this is my problem. - - - Updated - - - Hello every Body, I'm a student and i work on PIFA antennas, i have designed a pifa antenna with coaxial Feeding but i have a problem i can't...
  10. M

    Improve s11 of pifa antenna

    Please it's urgent i must send the project to my framer. who can help me ?
  11. M

    Improve s11 of pifa antenna

    Hello every Body, I'm a student and i work on PIFA antennas, i have designed a pifa antenna with coaxial Feeding but i have a problem i can't improve the value of s11, i have a good resonate frequency 2.4 GHz but s11 always > -10 db. Any one can help me here. It's urgent and thanks for...
  12. M

    AixBox radiation for PIFA antenna

    Hello every one, I'm a student, i have designed a PIFA antenna with coaxial feeding.it work correctly but the problem when i want to design the airBox for radiation pattern i have a bad result.i have tried to put the length of the box lambda/4 but i have the same problem. Please it's urgent...
  13. M

    Air box radiation PIFA antenna

    Hello every one, I'm a student, i have designed a PIFA antenna with coaxial feeding.it work correctly but the problem when i want to design the airBox for radiation pattern i have a bad result.i have tried to put the length of the box lambda/4 but i have the same problem. Please it's urgent...
  14. M

    PIFA coaxial Feeding

    Any one knows this type of errors
  15. M

    PIFA coaxial Feeding

    Hello every body, I'm student, i have to do a PIFA antenna with coxiale Feeding. I have designed the antenna but i can't assign the materiel of the : Shorting PIN = Copper Ground = Copper and the material of the two cylindres of the coaxiale Cable. Can any one help me to configure the antenna...

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