i find a great webpage "http://www-users.cs.york.ac.uk/~fisher/lcfilter/" to calculate the lc filter ,it is pretty useful for my circuit design,but it has many limits in simulate,Q value ,ripple .i want wider range to better my design .is anyone who know a better tool to design lc filter .thanks friends
Of course, there are many other filter programs (in fact too many) and individual requirements can only tell which is best for one needs. What you indicated in your mail I think the the above two softwares meet your needs.
Nuhertz is the developer of comprehensive filter synthesis and analysis software packages for passive, transmission line, active, switched capacitor, and digital filters. Filter Solutions is the fully functional version. Filter Light is a low cost version with reduced functionality.
Filter Free is a freeware version with minimal functionality.
Important Feature: It supports interface to AWR Microwave Office RF & Microwave Circuit design environment...