Hi,
I’m looking to build a passive bandpass filter which will reject frequencies below 150kHz and above 2MHz.I need this circuit to be impedance matched to 50ohms at the input and 1megaohm at the output. I want to know the values for my resistors, capacitors and inductors to build this circuit?Formulas used?
Thanks for any help

Regards
John

 

Here is a link to a site that has a freeware program you can use - http://www.filter-solutions.com/passive.html.

Here is a site with a tutorial for designing them - http://www.electronics-tutorials.com/filters/band-pass-filters.htm.

 

Go here:
http://www.aade.com/filter32/download.htm
and download the Filter Design program.
It works pretty well, and it's free.
If you put in absurd values, it will likely quit unexpectedly on you.

 

Follow the link to download free DOS software for filter design.

http://members.tripod.com/michaelgellis/zip/filter.zip

 

hi all i want to design a tunable band pass filter with constant bandwidth can anyone help?