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Recent content by shameemkabir

  1. S

    what's difference of "Driven Modal" and "Driv

    Re: what's difference of "Driven Modal" and " most probably you used waveport. however, the waveport should have radiation boundary or so on one side.
  2. S

    50 ohm microstrip feed line for patch antenna array

    We need to know the design to tell you about the feed structure.
  3. S

    Housing effect on return loss and radiation pattern

    Hi! I have desinged a patch array antenna with sidelobe level less than -16 dB and return loss is better than 13 dB over the designed bandwidth (center freq. 13.7 GHz). Now the antenna need to be positioned inside a housing where the location of the antenna is fixed, i.e., nothing can be...
  4. S

    Antenna Paper request (Electronics Letters)

    1. A Derneryd and G Kristensson, “Signal correlation including antenna coupling”, Electronics Letters, vol. 40, pp. 157-159, Feb. 2004 2. A Derneryd and G Kristensson, “Antenna signal correlation and its relation to the impedance matrix”, Electronics Letters, vol. 40, pp. 401-402, April 2004...
  5. S

    Radiation Patterns with Multiple Wave Ports

    I don't think there is any impedance variation with different scan angle. and with source edit, you can see the variations in E-field, H-field and surface current etc.
  6. S

    2*1 patch array - how to design the feed network ?

    Re: 2*1 patch array The single patch simulation does not give a useable design at 10 GHz. this is the return loss what I have found. Is it the same what you have got?
  7. S

    2*1 patch array - how to design the feed network ?

    Re: 2*1 patch array I simulated one patch from your uploaded file. However, it does not have the characteristics you told (10 GHz resonance, S11 at -21db and vswr 1.12). would you please upload your single patch?
  8. S

    2*1 patch array - how to design the feed network ?

    Re: 2*1 patch array does your single patch antenna work as expected?
  9. S

    Radiation Patterns with Multiple Wave Ports

    you are absolutely correct. go to HFSS>Fields>Edit sources and change scaling factor and offset phase as required.
  10. S

    HFSS : how to select excitation in far field for 2 port ant

    port excitation hfss HFSS also supports explicit excitation. Just go to HFSS>Fields>Edit sources and change "scaling factor" and "offset phase" as required.
  11. S

    Printed dipole antenna in CST probelm with the excitation

    Re: dipole antenna delete the ground and use open(add space) in all directions. Simulate it and you would find your expected results.
  12. S

    HFSS and UWB antenna - fast or discrete? Or CST?

    Re: HFSS and UWB antenna I really didn't understand, what thickness you refer to.
  13. S

    HFSS and UWB antenna - fast or discrete? Or CST?

    Re: HFSS and UWB antenna "fast" takes less time while "discrete" takes longer. To have first impression, fast can be used. for more accuracy, discrete is used. For UWB, CST takes much less time. This is due to the fact that it uses time domain signal and then converts it to freqeuency domain...
  14. S

    Paper request (Microwave and optical technology letters)

    microwave and optical technology letters MIMO handheld antenna design approach using characteristic mode concepts Jonathan Ethier, Eric Lanoue, Derek McNamara Microwave and Optical Technology Letters Volume 50 Issue 7, Pages 1724 - 1727 Published Online: 23 Apr 2008 Copyright © 2009 Wiley...
  15. S

    Paper request (IRE circuit theory)

    Sorry to request here: Weissfloch Equivalents for Lossless 2n-Ports Youla, D. Circuit Theory, IRE Transactions on Volume 7, Issue 3, Sep 1960 Page(s): 193 - 199 link: https://ieeexplore.ieee.org/xpls/abs_all.jsp?tp=&arnumber=1086683&isnumber=23616
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