华东师范大学学报(自然科学版) ›› 2026, Vol. 2026 ›› Issue (2): 48-58.doi: 10.3969/j.issn.1000-5641.2026.02.005

• 射频前端与毫米波集成电路 • 上一篇    下一篇

一款应用于5G毫米波通信的23.7~35.8 GHz宽带低噪声放大器

王若菡, 石春琦*()   

  1. 华东师范大学 微电子电路与系统研究所, 上海 200241
  • 收稿日期:2025-11-04 接受日期:2026-01-23 出版日期:2026-03-25 发布日期:2026-04-03
  • 通讯作者: 石春琦 E-mail:cqshi@ee.ecnu.edu.cn
  • 基金资助:
    上海市科委资助项目 (22DZ2229004)

A 23.7~35.8 GHz wideband low-noise amplifier for 5G millimeter-wave communication

Ruohan WANG, Chunqi SHI*()   

  1. Institute of Microelectronic Circuits and Systems, East China Normal University, Shanghai 200241, China
  • Received:2025-11-04 Accepted:2026-01-23 Online:2026-03-25 Published:2026-04-03
  • Contact: Chunqi SHI E-mail:cqshi@ee.ecnu.edu.cn

摘要:

本文设计了一款基于40 nm CMOS工艺, 应用于5G FR2 (Frequency Range 2)频段的宽带低噪声放大器(LNA). 该放大器采用三级差分共源共栅结构, 结合反相双耦合增益增强技术, 在实现宽带输入匹配的同时显著提高增益. 通过采用电感反馈共栅短接技术, 最大稳定增益(MSG)提升了5.46 dB, 输出1 dB压缩点优化了9.95 dB. 基于混合级间宽带匹配网络, 使用跨阻峰平坦错峰方法, 实现了12 GHz的宽带性能. 芯片后仿真结果表明, LNA的峰值增益达到13.5 dB, 3 dB带宽覆盖23.7~35.8 GHz, 分数带宽为41%, 最小噪声系数为5.74 dB, 输入1 dB压缩点 (IP1dB) 为 –11.8 dBm.

关键词: 低噪声放大器, 毫米波, 宽带, 反相双耦合增益增强技术, 电感反馈共栅短接技术

Abstract:

This paper presents a design of a broadband low-noise amplifier (LNA) for 5G FR2 applications based on a 40 nm CMOS technology. A three-stage differential cascode topology was adopted, incorporating an out-of-phase dual-coupling gm-boosting technique to achieve wide input matching and improved gain. An inductive feedback common-gate shorting technique was employed, resulting in a 5.46 dB improvement in maximum stable gain and a 9.95 dB enhancement in output 1 dB compression point. A hybrid interstage wideband matching network was implemented using a transimpedance peak-flattening and staggering method, achieving a 12 GHz bandwidth. Post-layout simulation results show that the LNA exhibits a peak gain of 13.5 dB, a 3 dB bandwidth from 23.7 to 35.8 GHz, a fractional bandwidth of 41%, a minimum noise figure of 5.74 dB, and an input 1 dB compression point (IP1dB) of –11.8 dBm.

Key words: low-noise amplifier (LNA), millimeter-wave (mm-wave), wideband, out-of-phase dual-coupling gm-boosting technique, inductive feedback common-gate-shorting technique

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