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Type: Posts; User: B4M

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    Closed: On the use of 'operator' term!!

    Hello! I would like to know if I have Y a symmetric operator, can I say tha the matrix Y is symmetric implicitly?!
    Thank you!
  2. Closed: What is the effect of bodies discretization on the electromagnetic interactions?!

    Hello! I would like to know the effect of bodies discretization on the electromagnetic interactions?! it well known that its produces more accurate results , but I need to have an explanation with...
  3. Closed: Re: Any conditions or prerequisites on simultatin dielectric objects ?!

    Hello!

    no actually I am considering a lossless dielectric which means dielectric constant is a constant
  4. Closed: Re: Any conditions or prerequisites on simultatin dielectric objects ?!

    Thank you !
    I need to know why the use of a complex frequency ? and let consider we are follow up with that sentence how should I define the resonance frequency should I say Fr = 7+0.14i ghz ???!
  5. Closed: Any conditions or prerequisites on simultatin dielectric objects ?!

    hello , i would like to simulate a design of a dielectric object , and while I am gathering documentation I have read that "the resonance frequency of a dielectric must be complex " , could you...
  6. Closed: Re: how calculate the dimensions of a patch antenna

    Dear Suo,
    I believe you forgot to uploaded the figure.
    for your question, I would suggest that you calculate the wavelength for the frequency of interest, then adapt the design using the...
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    Closed: Re: Coaxial feed of a microstrip antenna

    Dear all,
    please find in this link a tutorial for the coaxial feedline.
    Best regards!
    https://www.youtube.com/watch?v=Md-UeD6iWxs
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    [SOLVED]Closed: Re: how to read the content of a dll file?

    Hello!
    Yes I wanted to get the exported functions
  9. Closed: help with derivation of "RWG basis function is divergence conforming "????

    Hello!
    I am willing to implement the MoM and I would like o get some help of how the property that says that RWG basis function is divergence conforming, in other words how to get the formulas in...
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    [SOLVED]Closed: how to read the content of a dll file?

    hello!
    I would like to know how I can read or extract the content of a dll file which I have found whitin a matlab code?
    Thank you for any suggestion!
    Best wishes!

    - - - Updated - - -

    I have...
  11. Closed: Re: How to compute the electric field inside a dielectric volume?!

    still don't understand ....the fact that there is no free charges in dielectrics is confusing me!
  12. Closed: How to compute the electric field inside a dielectric volume?!

    Dear all!
    I would like to compute the electric field inside a dielectric volume? How should I do it? is it possible to use the capacitor model? (any references ..... please highlight them they are...
  13. [SOLVED]Closed: Re: PIFA is it about the antenna shape or the short?

    Dear anilkrpandey ,
    please find attached the antenna design.
    Thank you!
    135808
  14. [SOLVED]Closed: PIFA is it about the antenna shape or the short?

    Hi!
    I have decided to design a PIFA antenna as it gives an omni-directional pattern, and I wanted to know if I make a design with a short and a feed could it still be called a PIFA ?!

    Thank you
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    Closed: Re: Anti-resonance!! is it ever useful?! when?!!

    Thank you very much for your replies,
    one more question: how can we call an anti-resonance as a constructive / or deconstructive for the antenna radiation ?
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    Closed: Anti-resonance!! is it ever useful?! when?!!

    Hello!
    I would be grateful if you could tell me what is really anti-resonance what happens or what causes this phenomena ? when it is useful and when it is harmful to the system's performance?!...
  17. Closed: Re: relation between slot positions and current density in antennas

    1. you have answered this in 3 , yes slots should be cut at positions with high current density.
  18. Closed: Re: Conventional Microstrip to SIW Tapered transition- clarity

    1. it should provide a good matching over the complete SIW bandwidth.
    2. The taper length is generally chosen to be a multiple of quarter wavelength, so that the return loss is minimal.
  19. Closed: What are the specifications while using the wave plane excitation?!

    HeLLo!
    I would like to know while using a plane wave excitation should I make any specifications other then the direction and polarization such as specifying the origin of the wave. My question...
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    Closed: Re: Z matrix components, how are they derived ?

    Thank you very much!
    I need in my study to refer to textbooks..
    I am more interested in the formulas which express the impedance matrix using the magnetic vector potential and electric scalar...
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    Closed: Z matrix components, how are they derived ?

    hello,
    I need to perform a study about the Z matrix, but I can't find how they have derived the existing formulas, any help or reference is very appreciated.
    My interest is on Z matrix describing...
  22. Closed: Need references about numerical electromagnetic !

    hi,
    I am a beginner and I need some good references about numerical electromagnetic as I want to start implementing the equations and plot them.
    (charges, E, H fields, ..etc).
    Hope you can...
  23. Closed: problems with coaxial feed using cst and generating worried S parameter ! !

    Hello!
    I am simulating a micro-strip patch antenna, this is one of my first steps in using the coaxial feed, I am following the tutorial to do so but I am getting a worried S parameter plot. How can...
  24. Closed: what is the difference between SIW and a microstrip antenna with shorting Pins?

    Hi!
    I am wondering about the difference of a SIW antenna structure and a microstrip antenna with shorting Pins?
    which one is most suitable for use in 5-10 GHz range?
    Thank you in advance!
  25. Closed: Can surface current distribution tell which type of polarization we have ?

    Hello!
    I would like to know if surface current distribution can tell which type of polarization we have ? I am attaching a figure, can I deduce that the polarization of the figure is circular ?...
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