A novel met hod t o p artially compensate sigma2delta shap ed noise is p rop osed. By injecting t HE comp en2
sation cur rent int o t HE p assive loop f ilte r during t HE delay time of t HE p hase f requency detect or ( PFD) , a maximum
reduction of t HE p hase noise by about 16dB can be achieved. Comp a red t o ot HE r compensation met hods , t HE tech2
nique p rop osed HE re is relatively simple and easy t o implement . Key building blocks f or realizing t HE noise cancel2
lation , including t HE delay va riable PFD and comp ensation cur rent source , a re sp ecially designed. Bot h t HE behavior
level and circuit level simulation results a re p resented.
標簽:
sigma2delta
compensate
injecting
artially
上傳時間:
2013-12-18
上傳用戶:qlpqlq