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Recent content by james cook

  1. J

    How to design a 3x3 hybrid combiner using coupler?

    Re: 3x3 hybrid combiner what I meant is a hybrid coupler has 3 inputs ports and 3 outputs, see the attachments for detail. Anybody know the inner structure of this combiner? Any tip will be really appreciated. Thanks in advane.
  2. J

    How to design a 3x3 hybrid combiner using coupler?

    Re: 3x3 hybrid combiner can anyone recommeded a design configuration for 3x3 matrix hybrid coupler. I know how to design 4x4, but 3x3 seem to be more complicated
  3. J

    CST microwave studio advance topics manual

    cst manual Hi, guys Does anyone here have the CST manual of advance topics for newer version like 2006 or 2008. If possible , provide a link or unpload it upright to here. Really appreciate it. I need it badly. Thanks in advance Best regards JC
  4. J

    [Req] any good book on passive filters

    Is this book available in this forum, if not, please upload it . Thanks in advance. Generalized Filter Design by Computer Optimization, Artech House, 1998
  5. J

    general checbychev coupling matrix synthesis using matlab

    cameron matlab coupling hope this will help.
  6. J

    general checbychev coupling matrix synthesis using matlab

    coupling matrix matlab synthesis by rotation or optimization?
  7. J

    rectangular coaxial line in circuit simulator

    Hi. Does anybody here know any circuit simulator have rectangular coaxial line component. As far as I know ansoft designer have round coaxial line components in the circuit simulator. But I have to model a low pass filter with coax line of retangular cross section. Can anyone have idea...
  8. J

    datatip accuracy in matlab plot.

    matlab datatip number of digits Hi mates. When I use plot function to plot a curve in matlab, I met a probelm. The digits of the marker ( data_tip) I used in the graph to indicate the X and Y is limited by 4. Only 4 digits displayed in the plot. How do I increase the decimal accuracy in...
  9. J

    How to represent a losses in lumped capacitor in HFSS

    add a resistor in paralle to represent the losses.
  10. J

    designing combline and interdigital filters

    combline vs interdigital read this book Microwave Filters Impedance Matching network and Coupling Structure
  11. J

    to put lumped inductor between two microstrip lines in HFSS

    The vaccum box with lumped RLC can repsent a chip capacitor, chip inductor or chip resistor on the MS line. The box size should be of the package size.
  12. J

    download links of these references pls?

    I want to download this book Novel Technologies for Microwave and Millimeter-Wave Applications Does anyone know where to download it?
  13. J

    to put lumped inductor between two microstrip lines in HFSS

    Re: to put lumped inductor between two microstrip lines in H here is a HFSS expample.hope to clarify...
  14. J

    compare: HFSS or Microwave CST

    cst vs hfss For small variation of structutre like simulating temperature drift, I prefer CST over HFSS.
  15. J

    to put lumped inductor between two microstrip lines in HFSS

    build a box of vacuum across the 2 lines, define it as a inductance. The integration line should contact the 2 MS lines. Added after 1 minutes: The box could be just above the MS lines, and have contact with the MS lines.
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