一个应用于探测生理信号SoC中的CMOS全集成高线性度低噪声上变频器设计

梁元, 张弘

电子学报 ›› 2013, Vol. 41 ›› Issue (4) : 821-827.

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PDF(1039 KB)
电子学报 ›› 2013, Vol. 41 ›› Issue (4) : 821-827. DOI: 10.3969/j.issn.0372-2112.2013.04.033
科研通信

一个应用于探测生理信号SoC中的CMOS全集成高线性度低噪声上变频器设计

  • 梁元, 张弘
作者信息 +

Design of a CMOS Fully Integrated Highly Linear Low Noise Up-Converted Mixer for Physiological Signal Detection in Deep Sub-Micron CMOS

  • LIANG Yuan, ZHANG Hong
Author information +
文章历史 +

摘要

本文设计一款用于探测生理信号SoC芯片中的5GHz双边带上变频器.该混频器基于传统的吉尔伯特单元,采用交流耦合current-bleeding结构以及三阶非线性失真抵消技术抑制非线性.通过将跨导级晶体管偏置在不同的工作区域(transconductance-boost结构),使得带内变频损失小于5dB而IIP3介于22.3dBm到39.8dBm,而且双边带噪声指数小于8.2dB.应用全差分结构和感性源极钝化,再次抑制了二阶以及三阶失真.全部上变频器在1.2V供电条件下总功耗为8.4mW.

Abstract

This paper discribes a 5GHz double sideband up-converted mixer design in a SoC-based sensor chip for physiological signal detection.Characterized by conventional Gilbert core,the proposed topology introduced current-bleeding and third-order distortion cancellation to relax nonlinearity.By biasing the transconductance stages into heterogeneous operation region the conversion loss was better than 5dB and the mixer obtained in-band(4.5GHz-5.5GHz) IIP3 ranged from 22.3dBm to 39.8dBm,and the noise figure is less than 8.2dB.Differential implementation and inductive source degeneration are adopted,by which the second and the third harmonics are further suppressed,given that the mixer merely consumes 8.4mW from 1.2V supply.

关键词

雷达感应芯片 / 上变频混频器 / 非线性失真 / 线性化技术

Key words

radar sensor chip / up-converted mixer / distortions / linearization

引用本文

导出引用
梁元, 张弘. 一个应用于探测生理信号SoC中的CMOS全集成高线性度低噪声上变频器设计[J]. 电子学报, 2013, 41(4): 821-827. https://doi.org/10.3969/j.issn.0372-2112.2013.04.033
LIANG Yuan, ZHANG Hong. Design of a CMOS Fully Integrated Highly Linear Low Noise Up-Converted Mixer for Physiological Signal Detection in Deep Sub-Micron CMOS[J]. Acta Electronica Sinica, 2013, 41(4): 821-827. https://doi.org/10.3969/j.issn.0372-2112.2013.04.033
中图分类号: TN402   

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基金

国家重点实验室项目 (No.k50510250010)
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