serenade
Newbie level 6
4th order lpf
Hi, all,
I have a question about the design of 4th-order loop filter for charge-pump PLL. Dean give a method to design a loop filter by given pole ratios. In dean's method, the poles of the filter are all on the real axis, but I think it is possible to design a filter with a pair of complex pole, and It may have better attenuation.
Please give me some advise.
Thanks and best Regards.
Serenade
Hi, all,
I have a question about the design of 4th-order loop filter for charge-pump PLL. Dean give a method to design a loop filter by given pole ratios. In dean's method, the poles of the filter are all on the real axis, but I think it is possible to design a filter with a pair of complex pole, and It may have better attenuation.
Please give me some advise.
Thanks and best Regards.
Serenade