A 8.75-11.2-GHz,low phase noise fractional-N synthesizer for 802.11a/b/g zero-IF transceiver  

作　　者：梅年松 潘姚华 黄煜梅 洪志良 

机构地区：[1]State Key Laboratory of ASIC & Systems,Fudan University

出　　处：《Journal of Semiconductors》2011年第6期78-83,共6页半导体学报（英文版）

基　　金：Project supported by the National High Technology Research and Development Program of China(No2009AA011605)

摘　　要：An ultra broadband fractional-N frequency synthesizer for 802.11a/b/g zero-IF transceiver application is presented.The mathematical models for the behavior of the synthesizer＇s spur and phase noise are analyzed,and the optimization methodology is proposed.Measurement results exhibits that the frequency synthesizer＇s integrated phase noise is less than 1°（1 kHz to 100 MHz）with a 4.375 GHz carrier（after divide-by-2）,and the reference frequency spur is below-60 dBc operating with a 33 MHz reference clock.The frequency synthesizer is fabricated on a standard 0.13μm RF CMOS process and consumes 39.6 mW from a 1.2 V supply voltage.An ultra broadband fractional-N frequency synthesizer for 802.11a/b/g zero-IF transceiver application is presented.The mathematical models for the behavior of the synthesizer＇s spur and phase noise are analyzed,and the optimization methodology is proposed.Measurement results exhibits that the frequency synthesizer＇s integrated phase noise is less than 1°（1 kHz to 100 MHz）with a 4.375 GHz carrier（after divide-by-2）,and the reference frequency spur is below-60 dBc operating with a 33 MHz reference clock.The frequency synthesizer is fabricated on a standard 0.13μm RF CMOS process and consumes 39.6 mW from a 1.2 V supply voltage.

关 键 词：frequency synthesizer VCO phase frequency detector sigma-delta modulator charge pump 

分 类 号：TN74[电子电信—电路与系统] TN752.5