基于微带结构的低噪音2.4/5.5 GHz双频段LNA的设计
Mingwen Zhang1,2,3,4, Zhiqun Cheng1,5, Tingwei Gong1
1School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China.
Micromachines
|January 28, 2026
概括
这项研究介绍了一种紧的双频低噪声放大器 (DB-LNA),在2.4/5.5 GHz工作. 它提供出色的噪声性能和宽带宽,使其适合先进的无线应用.
科学领域:
- 电气工程 电气工程
- 无线电频率 (RF) 工程
- 微波工程 微波工程
背景情况:
- 低噪音放大器 (LNA) 是现代无线通信系统中的关键组件.
- 实现具有高性能和紧尺寸的双频段操作是一个重大的设计挑战.
研究的目的:
- 设计和制造一个单级双频低噪声放大器 (DB-LNA),在2.4GHz和5.5GHz运行.
- 使用微条纹结构实现出色的噪声性能,高增益和宽带宽.
主要方法:
- 纯微条带双带偏差电路 (DBBC) 使用系列微条带线和辐射被采用.
- 一个串联的偏移微带匹配网络被用于一个紧的设计.
- 该DB-LNA是使用标准印刷电路板 (PCB) 工艺制造的.
主要成果:
- 制造的DB-LNA实现了15.6 dB (2.4 GHz) 和12.3 dB (5.5 GHz) 的收益.
- 在两种频率上测量出了出色的输入和输出回报损失.
- 低噪音 (NF) 值为1.0dB (2.4GHz) 和1.1dB (5.5GHz) 记录,其中-3dB带宽超过200MHz.
结论:
- 与现有设计相比,拟议的DB-LNA表现出优越的噪声性能和带宽.
- 紧的微条结构和双频偏差电路使得高效的双频放大成为可能.
- 这种设计为高性能无线通信系统提供了有希望的解决方案,这些系统需要紧的形状因素.
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