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Recent content by ji3n

  1. J

    Help with multiband dipole antenna

    Dear WinmRFP the 212mm length is fed at the middle just like the 89mm one. "One lambda in air is 190mm, so an electrically straight half wave dipole will be in the range of your 89mm" do you mean by 1 pole is 89mm, or 2 poles together are 89mm? :-? i used this equation to calculate the...
  2. J

    Help with multiband dipole antenna

    Hi i am designing a printed dipole antenna(full wavelength) with 1575Mhz frequency. so after the calculations, i simulated the antenna with a whole length of 89mm and i got around 1575Mhz resonant frequency. however when i simulated an antenna with the length of 212mm(whole length), i manage...
  3. J

    Printed Dipole Antenna Help

    Hi, what are the factors that changes the return loss of the antenna? As the length of the antenna affects the resonant frequency, what about the return loss dB?:oops:
  4. J

    Need help with dipole antenna

    Dear zorro, I think i understand now. So now i need to design a printed dipole and a printed koch curve dipole. And compare them.
  5. J

    Need help with dipole antenna

    hi everyone, zorro, maybe im the one that is confused. Patch dipole and printed dipole is it different? :oops: ferdows, i think thats the one. But i only require to do a simple T shape. thanks you sorry for the trouble everyone :oops:
  6. J

    Need help with dipole antenna

    Im very sorry to be confusing. I'll try to clarify as best as i can. :oops: My project is about comparing a normal patch dipole with a patch koch curve dipole that operates in the GPS frequency of 1.5GHz. It is to show with a fractal antenna i am able to shrink normal antenna size while being...
  7. J

    Need help with dipole antenna

    Hi, its a patch antenna on a FR4 board.. im kind new with antenna please bare with me :oops: thank you
  8. J

    Need help with dipole antenna

    Hi, i am trying to design a koch fractal dipole antenna for a GPS with frequency of 1.5GHz, my supervisor says that my antenna needs a ground. But the thing is i thought dipole antenna doesnt need a ground? Any kind advice will help a lot.. thank you:wink:

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