N
Nico Coesel
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).
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).
