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Recent content by Jian-Qiang Gong

  1. J

    Any one knows about the inverse chirp-z transform?

    How to realize the inverse chirp-z transform? I want to transform the frequency domain data into the time domain.
  2. J

    Anyone care about ferrite-based metamaterial?

    Recently, I've read paper entitled by "Left-handed transmission characteristics of rectangular waveguide periodically loaded with ferrite", and I want to repeat the dispersion relation shown in fig.2, but I meet the chanllenge to solve the transcendental equation (5), which is deduced from the...
  3. J

    How to tune the radius of the circular ring in ADS momentum?

    I've never used the "macros", have you got any examples about the application of macro?
  4. J

    How to tune the radius of the circular ring in ADS momentum?

    Re: How to tune the radius of the circular ring in ADS momen kspalla, thanks a lot for your suggestion, it does work. But i still have a further question, when i want to creat a complementary split ring resonator (CSRR) in ADS momentum, and i hope the csrr model can be tuned conveniently, what...
  5. J

    Retrieving the refractive index

    Hi, SAJ25 What do you mean by multi resonance structures? Don't you mean the SRR/Wire structure studied most belongs to the single resonance structure? So why the retrieval method in the paper "Robust method" can only deal with the single resonance structure rather than the multi resonance...
  6. J

    Retrieving the refractive index

    Based on the idea in Part C of paper "Robust method to retrieve the constitutive effective parameters of metamaterials", i've got stable and continuous effective impedance just as shown in Fig.3. The structure i simulated is the microstrip with csrr etched in ground plane and gap in the...
  7. J

    How to tune the radius of the circular ring in ADS momentum?

    When i want to change the radius of the circular ring , i have to creat another two circles and then perform the "difference" operation. Is there any simple way to realize ring parameters tuning?
  8. J

    About the CPW port in Ansoft Designer

    Why?Is there anyone can help me or give some advice?
  9. J

    About the CPW port in Ansoft Designer

    port with reference ansoft designer Thanks for your reply red-sun.Could you explain the port setup method in detail, for example ,by using a picture.
  10. J

    About the CPW port in Ansoft Designer

    ansoft designer cpw The port setup for cpw located on the inifinite ground plane is very easy, for there is coplanar port in designer,but for a cpw with finite ground is not very easy, one should setup reference ground for the source port. Is there anyone who ever had such a experience?
  11. J

    About the CPW port in Ansoft Designer

    cpw ansoft designer How to setup a port with its references for a CPW with finite ground in Ansoft Designer? Added after 1 hours 7 minutes: It's easy in Agilent Momentum, because there is a port called reference ground port.But it doesn't exist in Ansoft Designer.
  12. J

    About the CPW port in Ansoft Designer

    cpw ansoft designer How to setup a port with its references for a CPW with finite ground in Ansoft Designer?
  13. J

    How to observe the phase of electric field on a face in HFSS

    Re: How to observe the phase of electric field on a face in Thx for your reply, Azulykit! I know the basic function of drawing the plot such as Vector_ E、Mag_E etc., and my question is how to define the phase of the electric field,then show the animated phase change on a plane. The field...
  14. J

    How to observe the phase of electric field on a face in HFSS

    Hello, i've met a problem when using hfss.For example, a microstrip bend is simulated using hfss, how can i define the the phase of electric field on the dielectric surface and then show the animated phase change.

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