I use both and each has it's pluses and minuses .... the AADE is one of the better crystal filter design aids out there, to me much easier than the software Wes provided with the EMRFD book, although Wes' software in no slouch by any means, just ackward to use sometimes
JR --- In [email protected], "CHARLES HUTTON" <[EMAIL PROTECTED]> wrote: > > We each have ouir favorites, but I think Elsie from Jim Tonne runs circles > around AADE in terms of usability. > > > Chuck > > > >From: [EMAIL PROTECTED] > >Reply-To: [email protected] > >To: [EMAIL PROTECTED], [email protected] > >Subject: [soft_radio] Band Pass Filter Board > >Date: Thu, 08 Jun 2006 22:37:32 -0700 > > > > I just did a little experimenting with my PCB layout program. With the > >same 1.5" X > >3.5" board, it appears that I will be able, by placing the filters > >vertically rather than > >horizontally, to have all 6 filters be 7 pole elliptic filters rather than > >the 3 pole Cheb. I > >had. I also plan on putting a small 1:1 transformer on the input as well > >as separating > >the supply ground from the RF ground. > > The coils will be SM1008 size and the capacitors 0805. I will extend > >the pads in the > >middle some to accommodate smaller devices(some of the coils on the > >original > >design were 0603). I may or may not be able to keep the SMA connectors. > >I also found that the AADE filter program(free on their site) does design > >elliptic as > >well as other types of filter. RFSIM99 does not design elliptic > >filters(though it will > >analyze the design if drawn in the schematic). > > > >Dave - WB6DHW > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get to your groups with one click. Know instantly when new email arrives http://us.click.yahoo.com/.7bhrC/MGxNAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
