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.

Register Log in

Recent content by fredd

  1. fredd

    Internet of things applications

    Hi Taghred, You can try the STM32 microcontoller family and expansion boards. STM32 Nucleo boards are very good for beginners and hobbyists. Best regards, fredd
  2. fredd

    simulation and measurement results are different. What should I do?

    Yes it's just fine. in 2D/3D modeling & simulation you may specify the dielectric surrounding the antenna (note that air and vacuum don't necessarily have the same dielectic constant).
  3. fredd

    gm/id ratio technique

    ensure that your first transistor satisfies the requirement for the saturation region of operation.
  4. fredd

    Different dielectric constants for rogers 4003C

    choose one that is close to your operating frequency. let's say er (or dk) at freq=1000MHz.
  5. fredd

    ADS error Failed to translate ADS file to "DXF/DWG".

    Try this... Generate artwork first. Then export to dxf/dwg.
  6. fredd

    The best CAD for electrical drawings

    AutoCAD for leadframe (QFN, QFP) design.
  7. fredd

    Mesh operation in Q3D

    Hi Shera, I haven't explored it in Q3D. Probably what you can do is extract the SPICE model or S-Parameters then analyze it on a separate tool, let us say with ADS.
  8. fredd

    coil around ferrite rod in Q3D

    Hi Shera, You can see the equivalent equation body for each Inductance1,2,3.
  9. fredd

    coil around ferrite rod in Q3D

    Hi Shera, Q3D: In the analysis setup, check the Capacitance/Conductance box. This is necessary for the s-parameter export. Sonnet: after viewing the s-parameter file, you will see that right-axis is empty (as also indicated in the left part of the pic). Right-click on it and then add equation...
  10. fredd

    coil around ferrite rod in Q3D

    In the solutions window, click the export button and choose S-Parameters.
  11. fredd

    coil around ferrite rod in Q3D

    Hi shera, Could you extract the S-parameters for both designs (coil, and coil+rod)? Don't include the source/sink of the rod in the 2nd design (coil+rod). Then use Sonnet (freeware) to view the S-parameter file then extract the Inductance value. Let' see...
  12. fredd

    coil around ferrite rod in Q3D

    Hi Shera, There's a warning message on the second simulation. "Adaptive Passes did not converge..." In the Setup1, you can set the AC RL max passes to 30. also set the DC RL max passes to 30. and AC CG max passes to 30. This will ensure the convergence the simulation. BR, fredd
  13. fredd

    coil around ferrite rod in Q3D

    Hi Shera, May I know the mutual inductance and resistance between the coil and the rod. This could be achieved by setting the rod as Signalnet with source and sink ports. You can assign the two ends (two faces) as source and sink. Try it first. Thank you!
  14. fredd

    coil around ferrite rod in Q3D

    Hi Shera, May I know the resulting Inductance after adding the rod? You can still assign a Signal net on the Rod even without the sink and source.
  15. fredd

    coil around ferrite rod in Q3D

    Hi Shera, You can assign the two ends as source and sink.
See more

Part and Inventory Search

Back
Top