I need to design a two-stage LC low-pass filter just as the picture below. The values of L and C in the second stage(L6 and C4) are fixed. I can only change L8 and C5. The required cutoff frequency is around 2MHz. The Q factor is not so matter.
So my question is: is there any special point I need to pay attention to when designing L8 and C5. (I know that for the RC filter, the resistance of the second stage needs to be much larger than that of the first stage. But I don`t know whether it would be the case for LC filter. Or any similar rules)
Update: the source impedance is about 50ohm. And the load is about 30ohm. Of course at the end some resistors would be added into the circuit, but at this moment, I think I can just ignore them.