| 一种用于超高频RFID阅读器的正交下变频混频器的分析与设计 |
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| 引用本文： | 倪熔华,谈熙,唐长文,闵昊.一种用于超高频RFID阅读器的正交下变频混频器的分析与设计[J].半导体学报,2008,29(6):1128-1135. |
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| 作者姓名： | 倪熔华 谈熙 唐长文 闵昊 |
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| 作者单位： | 复旦大学专用集成电路与系统国家重点实验室,上海201203 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 分析了共用跨导级的正交下变频混频器的性能,包括电压转换增益、线性度、噪声系数和镜象抑制比,分析表明其在电流开关模式下比传统的Gilbert混频器对具有更好的性能.设计并优化了一个基于共用跨导级结构的用于超高频RFID阅读器的正交下变频混频器.在915MHz频段上,该混频器测得12.5dB的转换增益,10dBm的IIP3 ,58dBm的IIP2和17.6dB的SSB噪声系数.芯片采用0.18μm 1P6M RF CMOS工艺实现,在1.8V的电源电压下仅消耗3mA电流.
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| 关 键 词： | 正交混频器 共用跨导级 RFID阅读器 CMOS 低功耗 高线性度 |
| 文章编号： | 0253-4177(2008)06-1128-08 |
| 修稿时间： | 1/31/2008 3:50:31 PM |
Analysis and Design of a Quadrature Down-Conversion Mixerfor UHF RFID Readers |
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| Ni Ronghu,Tan Xi,Tang Zhangwen and Min Hao.Analysis and Design of a Quadrature Down-Conversion Mixerfor UHF RFID Readers[J].Chinese Journal of Semiconductors,2008,29(6):1128-1135. |
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| Authors: | Ni Ronghu Tan Xi Tang Zhangwen and Min Hao |
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| Affiliation: | ASIC & System State Key Laboratory,Fudan University,Shanghai 201203,China;ASIC & System State Key Laboratory,Fudan University,Shanghai 201203,China;ASIC & System State Key Laboratory,Fudan University,Shanghai 201203,China;ASIC & System State Key Laboratory,Fudan University,Shanghai 201203,China |
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| Abstract: | A quadrature mixer with a shared transconductor stage is analyzed,including voltage conversion gain,linearity,noise figure,and image rejection.The analysis indicates it has better performance than a conventional Gilbert mixer pair in commutating mode.A quadrature down-conversion mixer based on this topology is designed and optimized for an ultra high frequency RFID reader.Operating in the 915MHz ISM band,the presented quadrature mixer measures a conversion gain of 12.5dB,an IIP3 of 10dBm,an IIP2 of 58dBm,an... |
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| Keywords: | quadrature mixer shared transconductor stage RFID reader CMOS low power high linearity |
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