Title: Fractional Frequentcy-division and its Application in SATCOM
Abstract: This paper briefly introduces the development application and category of fractional frequency-division technique.It analyzes the frequency synthesizer's output phase noise and spurious consisting of PLL based on discussing the theory of Σ-Δ modulator technique used in fractional divider.Then it presents a fractional frequency-division PLL topology circuit used in SATCOM and emphasizes on its output spurious analysis.This method mitigates the disadvantage of frequency-division leakage by the adoption of AD4252 PLL chip and VCO output plus stationary divider.Test result also proves the design.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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