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 --------------------~--> You can search right from your browser? It's easy and it's free. See how. http://us.click.yahoo.com/_7bhrC/NGxNAA/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/
