This website provided free information and material for the field of passive filter design for students and engineers since 2010. The same service shall continue via this page. If you have previously saved bookmarks, these should still work, as the page names and locations have not been changed. Please find the filter pages by clicking on one of the items in the list below:
- Text books on Filter Theory & Design
- A few words on text books and math
- Key papers & books on LC filter synthesis
- How do filters work ?
- Poles and Zeroes
- Calculation of filter response from poles and zeroes
- The concept of coupling
- Filter responses – the easy way
- Filter synthesis
- Filter resonators and quality factor
- Group delay
- 3D EM simulation aided filter realisation
- Eigenmodes and Eigenmode solvers
- Port tuning of 3D EM filter models
- CAT – computer aided filter tuning
- Planar filter design
- The loss composition of a microstrip resonator
- Variations of a 3-pole bandpass filter – a “k & Q design example”
- Chebyshev lowpass filter element calculation
- Bandpass filter with extremely wide passband
- Filter design blog
- Filter design related links
The clickable list above replaces the previously provided side-bar menu on the home page. Please contact me, should anything be found missing.