用于物联网应用的直接射频信号采样集成接收器

P. Bousseaud, E. Novakov, J. Fournier
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引用次数: 1

摘要

提出了一种工作频率在400 MHz ~ 1.5 GHz之间的低功耗软件定义无线电接收机。接收机采用差分开关四路无源混频器结构。采样频率固定了接收信号的载波频率,一个简单的RC时间常数决定了接收器的带宽。该混频器结构允许在射频侧实现灵活的高q带通滤波器。该接收机提高了线性度,并且对强带外阻塞器和相邻信道干扰具有鲁棒性。宽带15db增益LNA允许在400mhz和1.5 GHz之间实现小于4db的噪声系数。测量灵敏度为-83 dBm,整个链的总增益为55 dB。在1.2V供电电压下,接收机的IIP3为-22.7 dBm,功耗为45.7 mW。该集成电路接收器采用130nm CMOS工艺设计。该接收机适用于物联网应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A direct RF signal sampling integrated receiver for IoT applications
A low power Software-Defined radio receiver operating between 400 MHz and 1.5 GHz is presented in this paper. The receiver is based on differential switched 4-path passive mixer architecture. The sampling frequency fixes the carrier frequency of the received signal and a simple RC time constant determines the receiver bandwidth. The mixer structure permits to implement flexible high-Q band-pass filters at the RF side. This receiver has improved linearity and is robust to strong out-of-band blockers and adjacent channel interferences. A wide-band 15 dB gain LNA permits to achieve a noise figure less than 4 dB between 400 MHz and 1.5 GHz. The measured sensitivity is -83 dBm with an overall gain of 55 dB over the chain. The IIP3 of the receiver is -22.7 dBm and the power consumption is 45.7 mW under a 1.2V power supply voltage. The IC receiver has been designed in a 130nm CMOS process. The receiver is suitable for Internet of Things (IoT) applications.
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