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A Highly Linear Receiver Using Parallel Preselect Filter for 5G Microcell Base S
本文首次提出了一种适用于5G微基站的高线性度接收机，通过三种技术实现了宽频带和高线性度。
40nm CMOS, 1.3V, 100MS/s
5G微基站高线性度接收机并行预选滤波器三阶滤波器平移反馈网络
▸创新点1：并行预选滤波器技术首次应用于5G微基站接收机，通过并行结构显著提升阻塞场景下的线性度，实测在0.5-3GHz频段内仅增加1.2dB噪声系数，满足基站共址阻塞要求（系统创新）
▸创新点2：三阶RF与基带滤波器组合实现-120dB/dec滚降特性，有效抑制近端干扰信号，相比传统方案提升带外抑制能力30%以上（电路创新）
▸创新点3：平移反馈网络创新设计将带内增益波动降至0.5dB以下，输入匹配优于-19dB，解决了宽带接收机增益不平坦问题（方法创新）
▸创新点4：整体架构在40nm CMOS工艺下实现0.8mm²核心面积，功耗108-176mW，支持150MHz带宽和2.6-3.9dB噪声系数，满足3GPP对100MS/s QPSK信号97.5%吞吐量要求（系统级性能创新）
Abstract
By introducing three different techniques, this arti-
cle, for the first time, presents a wideband highly linear receiver
(RX) capable of handling blocking scenarios in fifth-generation
(5G) microcell base station applications. First, a parallel preselect
filter is introduced to satisfy the base station co-location blocking
requirements. Next, a combination of third-order RF and base-
band (BB) filters is adopted to attenuate close-in blockers by a
−120 dB/dec roll-off. Finally, a translational