A 0.5-to-3.5 GHz Self-Interference-Canceling Receiver for In-Band Full-Duplex Wireless
A 0.5-to-3.5 GHz Self-Interference-Canceling Receiver for In-Band Full-Duplex Wireless
复制标题
用于带内全双工无线的 0.5 至 3.5 GHz 自干扰消除接收器
DOI：
10.1109/rfic.2019.8701837
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
K. Entesari
中科院分区：
文献类型：
--
作者：
A. Ershadi;K. Entesari
本文提出了一种带内全双工自干扰消除接收机，该接收机通过对TX副本的同相分量和正交分量进行比例调整，并将近似的泄漏量注入RX接口来实现发射机泄漏抵消。超过35db的抵消测量调制的TX样品。接收器结构为8相无源混频器优先，具有高线性度和片上对带外阻塞器的锐利抑制。接收机的IB-IIP3在2ghz载波1 MHz偏移时为6 dBm， OB-IIP3为27 dBm。在TDD模式下，5mhz基带频率的NF为3.3 dB。在FD模式下，即RX和TX同时工作在同一频段，仅观察到2-2.5 dB的噪声衰减。FD模式下，NF可达5.3 dB。作为概念验证，原型机在65nm CMOS中制作和测量。系统工作频率为500mhz ~ 3.5 GHz。
This paper proposes an in-band full-duplex self-interference canceling receiver that achieves transmitter leakage cancellation by scaling the in-phase and quadrature components of TX replica, and injecting the approximated leakage to the RX interface. More than 35 dB cancellation is measured for modulated TX samples. The receiver structure is 8-phase passive-mixer-first with high linearity and on-chip sharp rejection of out-of-band blockers. The receiver has an IB-IIP3 of 6 dBm at 1 MHz offset from 2 GHz carrier, and OB-IIP3 of 27 dBm. The NF at 5 MHz baseband frequency is 3.3 dB at TDD mode. At FD mode, i.e., RX and TX are operating simultaneously at the same frequency band, only 2-2.5 dB noise degradation is observed. The NF reaches 5.3 dB in FD mode. As a proof of concept prototype is fabricated and measured in 65 nm CMOS. The system is functional from 500 MHz to 3.5 GHz.