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Recent content by nafah

  1. N

    half power beam width

    hi What is meaning of Half Power Bandwidth of the antenna in details please? thanks
  2. N

    UWB antenna applications

    hi this link https://arxiv.org/pdf/0911.1681 gives the Applications of UWB Technology
  3. N

    the relation between the axial ratio in (dB) and frequency in ADS

    Hi How I get the relation between the axial ratio in (dB) and frequency in ADS software?
  4. N

    What is difference between radiation gain and antenna gain?

    Hi What is difference between radiation gain and antenna gain? Thanks alot
  5. N

    simulation using ADS sofrware

    Hi In ADS software In EM setup windows, in mesh tab, which is the accetable value of mesh frequncy and cells/wavelength? and what is the effect of change these values on the simulation results? Thanks
  6. N

    Resosnt frquency of Radar application

    the antenna can be used for radar application in the range 8.4-8.66 GHz Does any frequency in this range can be used in radar application such as 8.1GHz, 8.6 GHz?
  7. N

    one minute rain rate value

    Hi, What's the manning of one minute rain rate value, this value is required in rain attenuation prediction.? And how I can convert the average rain rate in (mm) to one minute rain rate (mm/h)? Thanks for all
  8. N

    standing wave ration and return loss

    Hi, What is meaning of SWR is (1:1.5) ? from the point of matching view What is the difference between SWR less than 2, and S11 less than -10 dB? thanks for all
  9. N

    parameters of slot antenna

    hi I simulated an antenna, and the simulation parameters of the antenna are presented in the image> I would like to know that this antenna has a good parameters or not> thanks for all
  10. N

    integral and differential forms of Maxwells equations

    Hi all When do we use the integral form of Maxwell's equations? and When do we use the differential form of Maxwell's equations? Thank you
  11. N

    baseband in multimode fiber

    hi what is meaning of baseband in multimode fiber? in some papers gives values of baseband of 100 MHz, 500MHz thanks alot
  12. N

    Band with of power and impedance

    hi What is difference btween power bandwidrh and impedance bandwith? Thank for all
  13. N

    substrate in ADS software

    Hello I have a substrate with dimensions 60mm×80mm How does to determine the dimensions of the substrate in ADS ?
  14. N

    Operating Frequency of WiMax

    Hi all what is difference between using the following frequencies in WiMax communications 2.5 GHz , 3.5 GHz, 4.9 GHz, 5.8 GHz Is choosing the operating depending on the WiMax communications environment ? Is yes ? Which the frequency used for each environment? Can we used different...
  15. N

    Theoretical model of path loss

    hi all I am working now in Path Loss in WiMax link most papers which related with Path loss calculations present the empirical path loss models Is there any theoretical model to compute the path loss for fixed WiMax system ? thanks a lot
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