半导体学报2008，Vol.29Issue(9)：1708-1714,7.
应用于802.11b无线局域网的低噪声高线性度的CMOS射频接收机
A Low Noise, High Linearity CMOS Receiver for 802. 11b WLAN Applications
摘要
Abstract
A 2.4GHz monolithic CMOS receiver with direct-conversion architecture is presented. This quadrature receiver is designed for 802. 11b wireless LAN applications at the maximum data rate of 11Mbps as a low-cost solution. Five key blocks, i, e., a low noise amplifier (LNA), a down-conversion mixer, a variable gain amplifier, a low pass filter, and a DC-offset cancellation circuit, are designed based on system design and low noise high linearity considerations. The necessary auxiliary circuits are also included. Fabricated in SMIC 0.18μm lp6m RF CMOS process, the receiver's performance is measured as:4,1dB noise figure, - 7.5dBm input third order intercept point (IIP3) for LNA& mixer at high gain setting, -14dBm IIP3 for the whole receiver,53dBc @30MHz offset of adjacent channel power rejection, and less than 5mV output DC-offset. The receiver consumes 44mA under a 1.8V power supply with I,Q two paths.关键词
802.11b/无线局域网/接收机/直流失调抵消/混频器Key words
802.11b/wireless LAN/receiver/DC-offset cancellation/mixer分类
电子信息工程引用本文复制引用
黄煜梅,王静光,王金菊,洪志良..应用于802.11b无线局域网的低噪声高线性度的CMOS射频接收机[J].半导体学报,2008,29(9):1708-1714,7.基金项目
国家自然科学基金资助项目(批准号:60606009) Project supported by the National Natural Science Foundation of China (No. 60606009) （批准号:60606009）
