| 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 |
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| 引用本文： | 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. |
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| 作者姓名： | 黄煜梅 王静光 王金菊 洪志良 |
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| 作者单位： | 复旦大学国家专用集成电路与系统实验室,上海,201203;复旦大学国家专用集成电路与系统实验室,上海,201203;复旦大学国家专用集成电路与系统实验室,上海,201203;复旦大学国家专用集成电路与系统实验室,上海,201203 |
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| 摘 要： | 实现了一个单片集成、直接转换结构的2.4GHz CMOS接收机. 这个正交接收机作为低成本方案应用于802.11b无线局域网系统，所处理的数据传输率为该系统的最大速率--11Mbps. 基于系统设计以及低噪声高线性度考虑，设计了低噪声放大器、直接转换混频器、增益可变放大器、低通滤波器、直流失调抵消电路及其他辅助电路. 该芯片采用中芯国际0.18μm 1p6m RF CMOS工艺流片，所测的接收机性能如下：噪声系数为4.1dB，高增益设置下低噪声放大器与混频器的输入三阶交调点为-7.5dBm，整个接收机的输入三阶交调点为-14dBm，相邻信道干扰抑制能力在距中心频率30MHz处达到53dBc，输出直流失调电压小于5mV. 该接收机采用1.8V电源电压，I, Q两路消耗的总电流为44mA.
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| 关 键 词： | 802.11b 无线局域网 接收机 直流失调抵消 混频器 |
| 收稿时间： | 1/6/2008 11:36:06 AM |
| 修稿时间： | 5/15/2008 8:47:54 PM |
A Low Noise,High Linearity CMOS Receiver for 802.11b WLAN Applications |
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| Huang Yumei,Wang Jingguang,Wang Jinju and Hong Zhiliang.A Low Noise,High Linearity CMOS Receiver for 802.11b WLAN Applications[J].Chinese Journal of Semiconductors,2008,29(9):1708-1714. |
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| Authors: | Huang Yumei Wang Jingguang Wang Jinju and Hong Zhiliang |
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| Affiliation: | State Key Laboratory of ASIC and System,Fudan University,Shanghai 201203,China;State Key Laboratory of ASIC and System,Fudan University,Shanghai 201203,China;State Key Laboratory of ASIC and System,Fudan University,Shanghai 201203,China;State Key Laboratory of ASIC and System,Fudan University,Shanghai 201203,China |
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| 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 i... |
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| Keywords: | 802 11b wireless LAN receiver DC-offset cancellation mixer |
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