Introduction - If you have any usage issues, please Google them yourself
A novel met hod top artially compensate sigma2delta shap ed noise is p rop osed. By injecting t he comp en2sation cur rent int ot he p assive loop f ilte r during t he delay time of t he p hase f requency detect or (PFD) , a maximumreduction of t he p hase noise by about 16dB can be achieved. Comp a red to ot he r compensation met hods, t he tech2nique p rop osed he re is relatively simple and easy to implement. Key building blocks f or realizing t he noise cancel2lation, including t he delay va riable PFD and comp ensation cur rent source, a re sp ecially designed. Bot ht he behaviorlevel and circuit level simulation results a re p resented.