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Recent content by pollop

  1. P

    how to verfiy that antenna is resonant and perfecty matched

    If the radiation pattern is 'good' but shows a -ve gain (eg -2dB), does this mean the antenna is inefficient?
  2. P

    any doubts regarding the simulation in HFSS 9.0

    HFSS is very slow to simulate relatively complex antennas
  3. P

    What is meant by Time Gating when using a VNA?

    Please explain in simple terms what is meant by Time Gating when using a VNA Thnx
  4. P

    How to speed up the HFSS simulation time

    HFSS simulation time I was thinking more along the lines of within the software. Symmetry is an option, any other suggestions?
  5. P

    How to speed up the HFSS simulation time

    I know that the time it takes to simulate an antenna varies with the complexity of the model but how can this speeded up? Any tips or tricks? Thanks
  6. P

    why does this happen in hfss?

    ghb Probelm solved many thanks
  7. P

    Help! please explain impedance

    I can't seem to find the units in HFSS, I am assuming they are Ohms? How would I find out? Thanks Added after 1 minutes: Is there an option to do this using HFSS?
  8. P

    How to design a meander antenna?

    Meander Antenna anyone?
  9. P

    Help! please explain impedance

    so in this case, the blue line represents the real part and the red line represents Im. The best frequency here would be ~0.375GHz or ~0.85GHz because the attenuation is least at these frequencies?
  10. P

    Help! please explain impedance

    i am talking about a graph something like this
  11. P

    Help! please explain impedance

    How about if the x-axis is frequency and the two y-axes are Re and Im? How would you look for the ideal/best frequency of that antenna/system?
  12. P

    Help! please explain impedance

    Hi I would like to know what impedance is. I know it is similar to resistance but has a complex term. Also, how would one interpret an impedance graph with seperate lines for real and imaginary? THANK YOU
  13. P

    why does this happen in hfss?

    hi habeebhabz, i chose infinite sphere in far field set up, is this what you mean? I havnt changed any settings thanks
  14. P

    why does this happen in hfss?

    i have simulated a loop but i only get half the radiation pattern. can anyone explain this ? thanks
  15. P

    Three basic questions about antennas

    Antenna questions Polarization in basic terms is the orientation of the E-field

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