This is the last known release of AADE's filter design application for Windows, mirrored for posterity as permitted by the program's license agreement. A slightly earlier version (V4.42) is also downloadable here.

Download AADE Filter Design V4.5

Important note: I don't have the source code to this program, and I have no relationship with AADE or Neil Hecht's estate (besides being a very satisfied customer of his handheld L/C meter). Consequently, I can't provide any support for it whatsoever. As with all freeware applications on this site, use this program at your own risk.

Some hints for installing and running the program under WINE are provided here.

April 26, 2018: Some further hints for WINE users, received via email:

With winetricks installed from Ubuntu repo, "winetricks mfc40" fails because Microsoft has changed permissions. This works currently on Ubuntu 16.04 running wine 3.0 (winehq):

• Make a suitable directory to receive latest winetricks including executable, change to it
• wget https://raw.githubusercontent.com/Winetricks/winetricks/master/src/winetricks
• chmod +x winetricks
• ./winetricks mfc40

AADE then installs ok. Running AADE needs wine gecko for the help window. Get wine to install gecko even though the dialog recommends the repo version.

March 6, 2019 More tips:

• Also see https://www.rf-tools.com for similar filter design tools. Good for sanity-checking results from the AADE utility, and for selecting standard component values.
• Elliptic LPFs have lower than specified input impedance unless a small passband ripple (<< 1 dB) is specified. This is also true for the calculator at rf-tools.com, seems to be a quirk of the underlying math
  
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