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My tool for designing elliptic stripline filters

Discussion in 'Electronic Design' started by Nico Coesel, Mar 1, 2013.

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  1. Nico Coesel

    Nico Coesel Guest

    A couple of months ago I posted a question on how to design an
    elliptic filter made out of micro stripline. That got me some pointers
    but not a clear answer. After some more Googling I found a book which
    had a couple of equations. Those are so difficult to solve I couldn't
    get away with an Excel sheet let alone solve them by hand. So decided
    to write my own solver. Being at it I wrapped it into a nice GUI and I
    decided to turn it into a (cheap) product.

    Ofcourse I did some simulation and testing and it turns out the
    geometries calculated by my program produce working filters!

    It available for download from my website:
    http://www.nctdev.nl/shop_prod.php?pg=17

    At this moment it can only calculate geometries of 3rd, 5th and 7th
    order elliptic filters (which is by far the hardest part).
     
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