Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Recent content by simuboss

  1. S

    Basis Functions in HFSS

    that's great john. for your questions, i don't have an exact answer, but you need to get such discrepancies to learn not to trust the simulations! in that world, mesh size plays the key role and you might see even two opposite phenomena by changing it! you need to be always careful about that...
  2. S

    Incidence angle in HFSS

    if you post the unit cell image, that would be easier to explain. For floquet, use sines and cosines to come up with the correct angle of incidence at your BC and source. it is easy. for example, you can set the source as k0*cos(alfa), and then floquet BC needs to be as k0*sin(alfa). this way...
  3. S

    Basis Functions in HFSS

    this seems to be a mesh problem. use a finer mesh and see if the results are different. if not, double check your reference calculations!
  4. S

    HFSS selecting view planes

    use "right click" > view > Apply Orientation and select from the list.
  5. S

    HFSS Mesh setting with very thin layer graphene

    what do u mean by wrong? is there any error? btw, at that scale you can use semistatic approximation.
  6. S

    S-Parameters Extraction in HFSS

    HFSS is more flexible than comsol in s-params. for your question, you need to consider each mode separately.no need to sum up
  7. S

    Why use high frequency?

    in addition to what stated above, energy consumption might be noted.
  8. S

    Difference between RHC and LHC in receiving and transmitting antenna?

    correct! this is because RH and LH are defined based on propagation direction. - - - Updated - - - good thoughts! 1- radiation backward +z toward origin means -z! 2- yes.
  9. S

    like photonic crystal

    it is not hard to write a similar code. check this out: R. Feced, et al IEEE J. Quantum Electron. 35, 1105 346 (1999).
  10. S

    How can ellipticity angle be negative?

    The same thing is in Balanis. see fig 4-21. Ellipticity angle is an angle and you can think of -pi/2 as 3pi/2!. So the first is RC and second is LC?!
  11. S

    How can ellipticity angle be negative?

    No, both are wrong! the polarization is a simple topic and that's strange why authors having problem dealing with that... for characterization of elliptical polarization, you need two parameters: rotation and ellipticity. To find handedness, some info on the phase difference must be provided. I...
  12. S

    Material assigment in HFSS

    disagree! so if you create 2 identical spheres at the same location, first one from metal, and second one from air, u think that the properties of metal is kept at that location?! that's wrong...the order matters. - - - Updated - - - I may add, if you have two metals, then what? the rules are...
  13. S

    How can ellipticity angle be negative?

    in the first paragraph of section 7-3-4, last line, says shape and handedness comes from ratio and phase different. So, if it is saying that ratio is used for handedness, it is violating an early statement...I disagree with the book. you might want to read another book that gives you correct...
  14. S

    How can ellipticity angle be negative?

    I am wondering which book you are mentioning?! ellipticity is a ratio of two lengths that leads to some value between 0 and 1. the measure doesn't tell anything about handedness...and we don't have negative length, hence no negative ellipticity.
  15. S

    HFSS- Boundaries overlapping error... master/slave with perfect E

    So, maybe the comsol one is different from HFSS! Do you get the same error in comsol? for these cases, I can think of two solutions. first is to use equivalent fields and currents in your model. So you need to find the response of cross section of copper and the BC, then add an equivalent...

Part and Inventory Search

Back
Top