A mixer-first receiver with enhanced selectivity by capacitive positive feedback achieving +39dBm IIP3 and <3dB noise figure for SAW-less LTE Radio
A mixer-first receiver with enhanced selectivity by capacitive positive feedback achieving +39dBm IIP3 and <3dB noise figure for SAW-less LTE Radio
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混频器优先的接收器，通过电容正反馈增强选择性，实现 39dBm IIP3 和 <3dB 噪声系数，适用于无 SAW LTE 无线电
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
B. Nauta
中科院分区：
文献类型：
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作者：
Yuanching Lien;E. Klumperink;B. Tenbroek;J. Strange;B. Nauta
提出了一种利用电容正反馈增强的混频器优先接收机，以获得更陡的滤波器滚降和增强的线性度，同时保持低噪声系数。它覆盖所有6GHz以下蜂窝频段，在fLO=2GHz时，阻塞频率偏移为80MHz，实现了+39dBm的高IIP3和+12dBm的阻塞1dB增益压缩点。NF范围从fLO=1GHz时的2.4dB到fLO=6GHz时的5.4dB。该芯片采用Globalfoundries 45nm SOI技术在高电阻率衬底上制造。
A mixer-first receiver enhanced with capacitive positive feedback is proposed to obtain a steeper filter roll-off and enhanced linearity, while keeping low noise figure. It covers all sub-6GHz cellular bands and achieves a high IIP3 of +39dBm and blocker 1dB gain compression point of +12dBm for a blocker frequency-offset of 80MHz at fLO=2GHz. The NF ranges from 2.4dB at fLO=1GHz to 5.4dB at fLO=6GHz. The chip has been fabricated in Globalfoundries 45nm SOI technology on a high resistivity substrate.