eejli
Advanced Member level 4
fractional spur
My sigma delta PLL has a inband fractional spur. After research around I found it may come from the noise folding from out of band sigma delta quantization noise. I read Muer's paper on that and still donot understand why non-linearity of the PFD and CP will cause this kind of leakage.
Can you help on clearing the concept and recommend paper on it?
Thanks.
My sigma delta PLL has a inband fractional spur. After research around I found it may come from the noise folding from out of band sigma delta quantization noise. I read Muer's paper on that and still donot understand why non-linearity of the PFD and CP will cause this kind of leakage.
Can you help on clearing the concept and recommend paper on it?
Thanks.