Hi everybody.
Need a brilliant opinion from all of you.
I would like to design a 3 elements low past filter that is cut off at 1MHz and the required attenuation is at 2MHz. The impedance of the equipment is 50ohm. Meaning, I will use this filter with the 50ohms system.
If I design by 3 elements (2 caps (C1,C2) and an inductor (L1) - pie low pass filter), I will get the cap value of C1=C2=3.2nF while the L1=15.9uH.
What will happen if I add another capacitor (C3) parallel with the C2?
Is the 50ohms impedance of C2 wil have to be divided with C3. Because, the cap in parallel, its capacitance need to be added. I am confuse here.
Please kindly help me with your advices.
rgds,
QQ.
Need a brilliant opinion from all of you.
I would like to design a 3 elements low past filter that is cut off at 1MHz and the required attenuation is at 2MHz. The impedance of the equipment is 50ohm. Meaning, I will use this filter with the 50ohms system.
If I design by 3 elements (2 caps (C1,C2) and an inductor (L1) - pie low pass filter), I will get the cap value of C1=C2=3.2nF while the L1=15.9uH.
What will happen if I add another capacitor (C3) parallel with the C2?
Is the 50ohms impedance of C2 wil have to be divided with C3. Because, the cap in parallel, its capacitance need to be added. I am confuse here.
Please kindly help me with your advices.
rgds,
QQ.