A 5-GHz programmable frequency divider in 0.18-μm CMOS technology  

作　　者：舒海涌 李智群 

机构地区：[1]Institute of RF-& OE-ICs,Southeast University [2]Engineering Research Center of RF-ICs & RF-Systems,Ministry of Education,Southeast University

出　　处：《Journal of Semiconductors》2010年第5期85-89,共5页半导体学报（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(No.2007AA01Z2A7);the Science and Technology Program of Zhejiang Province,China(No.2008C16017).

摘　　要：A 5-GHz CMOS programmable frequency divider whose modulus can be varied from 2403 to 2480 for 2.4-GHz ZigBee applications is presented.The divider based on a dual-modulus prescaler（DMP） and pulse-swallow counter is designed to reduce power consumption and chip area.Implemented in the 0.18-μm mixed-signal CMOS process,the divider operates over a wide range of 1-7.4 GHz with an input signal of 7.5 dBm;the programmable divider output phase noise is -125.3 dBc/Hz at an offset of 100 kHz.The core circuit without test buffer consumes 4.3 mA current from a 1.8 V power supply and occupies a chip area of approximately 0.015 mm^2.The experimental results indicate that the programmable divider works well for its application in frequency synthesizers.A 5-GHz CMOS programmable frequency divider whose modulus can be varied from 2403 to 2480 for 2.4-GHz ZigBee applications is presented.The divider based on a dual-modulus prescaler（DMP） and pulse-swallow counter is designed to reduce power consumption and chip area.Implemented in the 0.18-μm mixed-signal CMOS process,the divider operates over a wide range of 1-7.4 GHz with an input signal of 7.5 dBm;the programmable divider output phase noise is -125.3 dBc/Hz at an offset of 100 kHz.The core circuit without test buffer consumes 4.3 mA current from a 1.8 V power supply and occupies a chip area of approximately 0.015 mm^2.The experimental results indicate that the programmable divider works well for its application in frequency synthesizers.

关 键 词：frequency divider dual-modulus prescaler pulse-swallow frequency synthesizer 

分 类 号：TN772[电子电信—电路与系统] TN912.3