Low Noise and Low DC Offset Zero IF WLAN Receiving Front-end Design

GUO Ben-qing; WEN Guang-jun

Chinese

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Low Noise and Low DC Offset Zero IF WLAN Receiving Front-end Design

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- Low Noise and Low DC Offset Zero IF WLAN Receiving Front-end Design
- Vol. 28, Issue 12, Pages: 1-5(2011)
- 作者机构：
  
  电子科技大学通信与信息工程学院,四川,成都,611731
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
移动端阅览
郭本青, 文光俊. 低噪声低直流失调零中频WLAN接收前端设计[J]. 微电子学与计算机, 2011, 28(12): 1-5,9.

GUO Ben-qing, WEN Guang-jun. Low Noise and Low DC Offset Zero IF WLAN Receiving Front-end Design[J]. 2011, 28(12): 1-5.
郭本青, 文光俊. 低噪声低直流失调零中频WLAN接收前端设计[J]. 微电子学与计算机, 2011, 28(12): 1-5,9. DOI：

GUO Ben-qing, WEN Guang-jun. Low Noise and Low DC Offset Zero IF WLAN Receiving Front-end Design[J]. 2011, 28(12): 1-5. DOI：

摘要

提出一种低噪放和混频器融合结构的零中频接收方案:采用折叠结构降低开关对的偏置电流取得良好的闪烁噪声性能

同时具有优越的增益性能;通过共模与差模反馈来改善直流失调

稳定中频输出;利用差分电路结构以及版图优化布局获得高的二阶交调指标.基于Chartered 0.18m CMOS工艺的Spectre-RF模拟仿真表明

电路在802.11a频段取得了良好的噪声

直流失调等电学性能.芯片整体功耗为16.5mW

占用面积为0.23mm.

Abstract

A zero IF receiving front-end with merged LNA and mixer is proposed.Low flicker noise is achieved by decreasing bias current of switching pairs of folded architecture

with high gain as well.DC offset is improved by common and differential mode feedbacks

making the IF output level stable.High IIP2 is obtained by differential circuitsarchitecture and optimized layout.Spectre-RF simulations based on Chartered 0.18 m CMOS process indicate that the presented receiving front-end behaviors good performance in noise

DC offset

and etc.Power consumption of the chip is 16.5 mW with size of that being 0.23 mm.

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Related Institution

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