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Recent content by okik

  1. O

    microstrip discontinuity

    Designed scheme is from software Nuhertz Filter Solutions
  2. O

    microstrip discontinuity

    Is it possible to find somewhere the exact procedure how to achieve this scheme? Or could you please briefly describe the steps how to do it? Thank you for your reply.
  3. O

    microstrip discontinuity

    Thank you for answers. So question is - what should be the right step between lumped and distributed form, since it can't be done directly as you wrote?
  4. O

    microstrip discontinuity

    you can find some informations in above post #9 (calculation to microstrip form -> substrate - Er=2.33 and h=1.27 mm, Zhigh=155.9, Zlow=40.73, cutoff freq=694MHz)
  5. O

    microstrip discontinuity

    for calculation to microstrip form --> substrate - Er=2.33 and h=1.27 mm, Zhigh=155.9, Zlow=40.73, cutoff freq=694MHz
  6. O

    microstrip discontinuity

    lowpass filter with cutoff freq = 694 MHz
  7. O

    microstrip discontinuity

    How can I compensate T-junction discontinuity? I need advice on how to do it easily and especially correctly. Because my designed filter not working properly due to T-junction discontinuity. Thanks for any advice
  8. O

    Design of microstrip lowpass filter

    Hello everyone, you help me a lot before and I have request for a help again. I successfully repeated example in chapter 5.1.3 from this book: HONG, Jia-Shen G.; LANCASTER, Michael J. Microstrip filters for RF/microwave applications. You can see that example above in post #9. So I use this...
  9. O

    Design of microstrip lowpass filter

    how to solve it? maybe larger substrate is needed to avoid short circuit? EDIT: open stub shorted to the simulation boundary was the problem as you mention, so then i made substrate larger(to create gap above stub) and it works! thank you so much for advice
  10. O

    Design of microstrip lowpass filter

    if i put stubs on alternate side that result is still same, dont know what else should i change
  11. O

    Design of microstrip lowpass filter

    i try to make project in CST from given example, but my simulated S-parameters dont equal expected S-parameters and everything looks right(scheme, lengths/widths of microstrip), so what could be wrong(i think potential problem could be somewhere in CST)?
  12. O

    Design of microstrip lowpass filter

    thank you, sure this is better way how to make microstrip lp filter
  13. O

    Design of microstrip lowpass filter

    Is this only way how to do it? I mean, i knew values of L=20nH, Cp=1.9pF, Cs=1.2pF, Z=75 ohm - from that can be calculated impedance and not from table as was shown in the video.
  14. O

    Design of microstrip lowpass filter

    So i have given circuit (link below) and my question is: Is possible to somehow transform that LC part (L1-Cp1) of that given circuit into microstrip?
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