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Recent content by electricMac

  1. electricMac

    Frequency dependent Material Definition in HFSS

    Hello people! I know this is an old thread, but it is the most relevant to my issue. I cannot find anywhere (manuals etc) that the scale is Hz. As far as I can understand, when you create the freq. dependent material, if you leave the unit box of frequency as Hz, it will be Hz; but if you make...
  2. electricMac

    how to determine mass of a sphere in a HFSS or FEKO diagram?

    Hi everyone! I really need your help!!! Does anybody know exactly what choices do I have to make in order to plot SAR for a multilayered tissue model? I have already set the mass density values for each layer, but what do I have to do next? Do I have to choose all the layers together? Is there...
  3. electricMac

    how to design a patch antenna with chip resistor?

    You mean superstrate right? I can't make it too thick, because the purpose is to keep the antenna small sized. Can you recommend an appropriate material?
  4. electricMac

    how to read gain in polar plot (hfss v13)?

    Thank you Dfmona for the information, but my question was more about the peak gain value (and in general the expected values of gain). I seem to get a very low value of peak gain.... My antenna is a compact microstrip, with a substrate of 0.65mm thickness and material with εr=9. I can't change...
  5. electricMac

    how to read gain in polar plot (hfss v13)?

    Hello! I have designed a slotted patch antenna (+ superstrate) and i need to find the peak value of gain. I have also created a far fields 3d polar plot {db(GainTotal)} and it seams ok, but my questions is: what is the range of values that i sould see? Is there a rule?? Plz help! Thanks
  6. electricMac

    placing chip resistors in hfss

    I need to create a chip resistor too, but for a circular patch antenna (i initially used shorting pin but the bandwidth was too small!!). I want the chip resistor to have 1 Ohm resistance. Is it better to assign lumped RLC? Can i keep the cylinder that was the shorting pin but assign to the...
  7. electricMac

    how to design a patch antenna with chip resistor?

    Hello people! I have designed a probe-fed slotted patch antenna (so as to have a really small size) with a shorting pin which resonates at 402 MHz, but the bandwidth is terribly small! I've read about the technique of chip resistors, but i have no idea of how to create such a thing using HFSS...
  8. electricMac

    slotted patch antenna in HFSS

    Thank you Roxxon for the answers! About the first question: the circular face of the pin that touches the patch, is it possible to "touch" a slot? Not the whole face, but a part of it. So how do i pick the radius of the shorting pin if i know the resonant frequency that i want to accomplish? I...
  9. electricMac

    slotted patch antenna in HFSS

    Hello people! I'm trying to create a probe feed cylindrical slotted patch antenna with a shorting pin & supertstrate, so I have a few questions: 1)does the shorting pin (and the coax) have to touch only ground plane and patch? My question is more about the patch, because my design has 7 slots...
  10. electricMac

    HFSS lamda/2 dipole antenna

    Hello people! I'm trying to create a λ/2 dipole antenna at 402MHz, but i have some questions. Is there a rule to follow on setting : 1)the dipole radius? 2)the source rectangle? 3) the dimensions...

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