Design of fractional-N frequency synthesizer for FSK transceiver - 文章详情页

作者：

Li, Ming (Li, Ming.) | Wan, Peiyuan (Wan, Peiyuan.)

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EI Scopus

摘要：

In　this　Paper,　a　fractional-N　frequency　synthesizer　fabricated　in　a　0.18μm　process　is　designed　for　a　FSK　transceiver.　The　precision　of　the　charge　pump　can　be　improved　by　exploiting　the　op　amplifier.　Based　on　capacitance　multiplication　technique,　the　area　of　loop　filter　is　reduced.　The　fractional-N　divider　function　is　realized　by　the　sigma　delta　modulator.　FIR　filter　is　designed　in　the　input　stage　of　sigma-delta　modulator　to　avoid　spectrum　aliasing.　The　data　of　sigma　delta　modulator　can　be　stably　transmitted　to　programmable　frequency　divider　without　meta-stability.　The　minimum　step　of　frequency　is　28Hz　with　30MHz　reference　clock.　The　measurement　results　show　that　the　phase　noise　is-129.69dBc/Hz　@1-MHz　offset　with　centered　frequency　at　390MHz.　©　2016　IEEE.

关键词：

Delta modulation Delta sigma modulation FIR filters Frequency dividing circuits Frequency shift keying Frequency synthesizers Integrated circuits Modulators Phase noise Transceivers

作者机构：

[ 1 ] [Li, Ming]Beijing Embedded System Key Lab, College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Wan, Peiyuan]Beijing Embedded System Key Lab, College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing; 100124, China

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