RCL lowpass design

Homie

Joined Nov 15, 2007
3
Hi there, i need help with the methode of designing a RCL lowpass filter. I know the -3dB frequency 70MHz and i know the quality factor 0,7. But i just forgot how to get started and what formulas to use
Thomas

Homie

Joined Nov 15, 2007
3
Yea thanks ive red that, but i just forgot what to do first. I have the transfer function for the filter, and i know the wo(2*pi*70000000) and Q(0,7) but what do i do first?? I cant remember if i have to match the impedans of the filter with the rest of the circuuit and/or what other things i have to consider.