* The industry standard for power and precision *
Have you ever:
S/FILSYN will do all of this and more!
The S/Filsyn program for the synthesis, design and analysis of all
kinds of electrical filters, has just been released in its first Windows
version. This is a standard 32 bit Windows executable, running under any of
Windows version from 95 to 8. It contains all the features of the last DOS
version of the program, including all the script files as well as built-in
high-resolution graphics display and print capabilities.
The program can handle passive LC, microwave, active RC, IIR and FIR
digital filters. Filter types can be low-pass, linear-phase low-pass, high-
pass, band-pass, band-reject filters and delay lines.
Implementations have always been one of the strong points of the
program. Passive LC and microwave filters may be implemented in lattice,
ladder or mixed forms. Ladders may contain bridged- or twin-T's and segments
of it may be converted to lattice, cross-coupled triplets and quadruplets and
other forms. Script files help in designing a very large number of band-pass
filters in the form or coupled resonators. Extreme termination at one end
permits the user to design components for multiplexers.
Active RC networks can be designed in cascaded second order sections,
or second order sections in a leapfrog or a follow-the-leader feedback forms.
Implementations may use either operational amplifiers or operational
transconductance amplifiers
IIR digital filters can be implemented in cascaded second order
sections, parallel, direct, Gray-Markel lattice, several wave-digital forms
and differential allpass forms if applicable.
All low- and band-pass filters can be delay equalized. Many special
design techniques are incorporated, including specified sloping-loss band-
passes, switched-capacitor filters, Gaussian and Papoulis filters and many
others.
Filters may be analyzed in the frequency and time domains, results
displayed and printed. Filter data may be saved, recalled, saved in text form
and transferred to other programs.
The new Windows version 1.0 menu provides for easy automatic design of virtually all of the
most commonly used filter types:
Here is a typical parameter window used by the automated menu system. This one is used with
the "Quasi-elliptic bandpass filters" option:
After any synthesys is complete a menu of powerfull tools are at your disposal to perform
Norton Transforms and many other transformations to make the filter realizable. Everything you do
is recorded allowing the scroll bar to be used to review what you have done. A large network can
not scroll off the screen out of sight!
This is just the automated filters menu. S/FILSYN can be operated manually to do things
that the "big name" engineering software packages can't even begin to do!