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JSSC 2025第10期RF & Wireless40nm

A Sub-7-GHz Linear Receiver for 5G Local Area Base Station Applications Mohammad

一款用于5G局域基站应用的亚7GHz线性接收器,具有高线性度和低噪声。
40nm CMOS, 1.3V, 0.4-7.3GHz, 105-195mW, OIP3 27-38dBm, NF 3.2-5.8dB
5G接收器跨阻放大器N路径滤波器线性度噪声系数
采用带三阶高通阻抗反馈的Rauch跨阻放大器提升选择性和环路增益
在LNTA中集成共享开关的N路径陷波滤波器增强带外线性度
利用TIA输入阻抗的带通特性实现频率相关负电容以扩展带宽
Abstract
This article presents a sub-7-GHz receiver (RX) for the fifth-generation (5G) local area base station applications. A Rauch transimpedance amplifier (TIA) with a third-order high-pass impedance in its feedback is adopted to enhance RX selectivity and provide higher loop gain (LG) at the band- width edge, improving in-band linearity for high-bandwidth applications. An N-path notch filter, sharing switches with down-converting passive mixers, is incorporated in the low-noise transconductance ampli