A mixer-first receiver with enhanced selectivity by capacitive positive feedback achieving +39dBm IIP3 and <3dB noise figure for SAW-less LTE Radio

2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2017-06-04 DOI:10.1109/RFIC.2017.7969072

Yuanching Lien, E. Klumperink, B. Tenbroek, J. Strange, B. Nauta

引用次数: 23

Abstract

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.

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一种混频器优先接收器，通过电容式正反馈增强选择性，实现+39dBm IIP3和<3dB噪声系数，适用于无saw LTE无线电

为了获得更陡的滤波器滚降和更高的线性度，同时保持较低的噪声系数，提出了一种带有电容性正反馈增强的混频器优先接收器。它覆盖了所有低于6ghz的蜂窝频段，在fLO=2GHz时，阻塞器频率偏移为80MHz，实现了+39dBm的高IIP3和+12dBm的阻塞器1dB增益压缩点。在fLO=1GHz时，NF范围为2.4dB ~ fLO=6GHz时，NF范围为5.4dB。该芯片采用Globalfoundries的45nm SOI技术在高电阻率衬底上制造。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)

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