A fully integrated direct-conversion digital satellite tuner in 0.18μm CMOS  

作　　者：陈斯 杨增汪 顾明亮 

机构地区：[1]Xuzhou Normal University

出　　处：《Journal of Semiconductors》2011年第4期111-115,共5页半导体学报（英文版）

基　　金：Project supported by the National High Technology Research and Development Program of China(No2007AA01Z280)

摘　　要：A fully integrated direct-conversion digital satellite tuner for DVB-S/S2 and ABS-S applications is presented.A broadband noise-canceling Balun-LNA and passive quadrature mixers provided a high-linearity low noise RF front-end,while the synthesizer integrated the loop filter to reduce the solution cost and system debug time.Fabricated in 0.18μm CMOS,the chip achieves a less than 7.6 dB noise figure over a 900-2150 MHz L-band, while the measured sensitivity for 4.42 MS/s QPSK-3/4 mode is -91 dBm at the PCB connector.The fully integrated integer-N synthesizer operating from 2150 to 4350 MHz achieves less than 1℃integrated phase error. The chip consumes about 145 mA at a 3.3 V supply with internal integrated LDOs.A fully integrated direct-conversion digital satellite tuner for DVB-S/S2 and ABS-S applications is presented.A broadband noise-canceling Balun-LNA and passive quadrature mixers provided a high-linearity low noise RF front-end,while the synthesizer integrated the loop filter to reduce the solution cost and system debug time.Fabricated in 0.18μm CMOS,the chip achieves a less than 7.6 dB noise figure over a 900-2150 MHz L-band, while the measured sensitivity for 4.42 MS/s QPSK-3/4 mode is -91 dBm at the PCB connector.The fully integrated integer-N synthesizer operating from 2150 to 4350 MHz achieves less than 1℃integrated phase error. The chip consumes about 145 mA at a 3.3 V supply with internal integrated LDOs.

关 键 词：DIRECT-CONVERSION CMOS RF TUNER noise-canceling LNA passive mixer 

分 类 号：TN432[电子电信—微电子学与固体电子学] V474.23[航空宇航科学与技术—飞行器设计]