Title :
Variable modulus δ-σ modulation in fractional-N frequency synthesis
Author :
Borkowski, M.J. ; Kostamovaara, J.
Author_Institution :
Univ. of Oulu, Oulu
Abstract :
A variable modulus δ-σ modulator can generate any rational DC value with absolute accuracy. When applied in fractional-TV frequency synthesis it allows for generating a series of frequencies with exact channel spacing for a given radio standard. It removes the problem of approximating frequencies and resulting constant phase drift.
Keywords :
delta-sigma modulation; frequency synthesizers; channel spacing; fractional-N frequency synthesis; variable modulus δ-σ modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20072563