Deutsch Ingenieurbüro Dr. Ing. Gerald Oberschmidt

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Calculation of Planar Transmission Line Parameters

Calculate the

  1. Effective permittivity and impedance of Micro-strip Lines
  2. Micro-strip Lines: Bend, Open, Via
  3. Effective permittivity and impedance of Strip Lines
  4. Coupled Micro-strips
  5. Edge and broadside coupled Strip-Lines
  6. Design Attenuators (Pi and T)
  7. Equivalent Circuit for short transmission lines (Pi and T)
  8. Design (one kind of) Butterworth and Chebycheff-filters

Download Excel-Sheet

Download pdf-explanation as excerpt from Seminar

Contents of Seminar-Series (in German). Example only, will be adjusted to your needs, contact us for a quote. More on our Seminars is available here.




Optimize Use of your Spectrum Analyzer

  1. Find the Optimum power at the mixer of your spectrum analyzer (determine required attenuator settings)
  2. Determine maximum dynamic range for spurious and intermodulation measurements
  3. Effectively determine measurement uncertainty
  4. Remove measurement offset for signals close to the noise floor

Download Excel-Sheet

Download pdf-explanation as excerpt from Seminar




Impedance Match Your Circuits

Calculate two-element impedance matching circuits using reactive elements:

  1. Lumped (inductance and capacitance)
  2. Distributed (Lines and shorted/open stubs)

Download Excel-Sheet

Download pdf-explanation as excerpt from Seminar




Spuriouses and (un-)Wanted Mixing Products of Non-linear Circuits

Draw the normalized or un-normalized spuriouses chart for non-linear elements.

  1. Find out which frequencies and frequency ranges are generated at higher order by your element
  2. Determine effect of blocking signals
  3. Specify the subharmonic mixer to use in order to expand the frequency range of your spectrum analyzer
  4. Use it for somewhat more calculations

Download Excel-Sheet

Explanation of the Spur-Charts generated by the Excel-File

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