How to design an LPF...

[naveeng]

dear frns...

i need to design an LPF with an input impedance of 150 ohm and output impedance of 50 ohm...

plzz...any one can describe me how to design or suggest any paper or article or text book ..so that i can get help from u....


thanks and regards....

 

[RFDave]

Have you tried googling "low pass filter design"? There seem to be some useful pages there.

Dave

 

[LvW]

what about looking into a relevant textbook ?
You should be aware that there are at least 20 circuit alternatives for active low pass filters. Or do you refer to passive circuits ?
Do you know that filter order and approximation characteristics are also relevant ?

 

[FvM]

You are apparently refering to a passive filter. If you want to use inductors and capacitances from a catalog with standard E6 or E12 values, simple filter characteristics (bessel, butterworth, chebyshev) are preferable. They are sufficient for many purposes anyway. But as said, you need a specification. Trial version of Nuhertz filter solutions could be used to calculate the filter, but a lot of other tools should be also available.