一种用于5G终端增益可调的低噪声放大器设计
Design of a Low Noise Amplifier with Adjustable Gain for 5G Terminals
彭欢庆 1王金婵 1赵芃 1张金灿 1樊云航 1张立文1
作者信息
- 1. 河南科技大学信息工程学院,河南洛阳 471023
- 折叠
摘要
针对无线接收机需要对不同强度信号进行不同程度放大的要求,采用WIN公司的0.15 µmGaAs pHEMT工艺设计了一款工作频段为5G通信频段3～5 GHz的可变增益低噪声放大器.该放大器包含两级放大电路,均采用自偏置结构,降低了端口数量,通过调节第二级放大电路的控制电压在0至5 V之间变化,可实现系统增益的连续可调范围约39.3 dB(-3.5～35.8 dB).放大器版图尺寸为0.94 × 1.24 mm2.控制电压为0 V时,系统噪声为0.53±0.01 dB,增益为35.5±0.35 dB,中心频点4 GHz处,OP1dB为13.2 dBm,OIP3达到32.7 dBm,表明系统具有良好的线性度.
Abstract
Aiming at the problem that wireless receivers need to amplify the signals of different intensities to different degrees,a variable-gain low noise amplifier operating in the 5G communication band from 3 to 5 GHz was designed in WIN's 0.15 μm GaAs pHEMT process.The amplifier included two stages of amplification circuits,both of which adopted a self-biased structure to reduce the number of ports,and the continuously adjustable range of the system gain of about 39.3 dB(-3.5-35.8 dB)can be achieved by adjusting the control voltage of the second stage amplification circuit to vary from 0 to 5 V.The footprint is 0.94× 1.24 mm2.At a control voltage of 0 V,the system noise is 0.53±0.01 dB,and the gain is 35.5±0.35 dB.At the center frequency point of 4 GHz,the OP1dB is 13.2 dBm,and the OIP3 reaches 32.7 dBm,indicating that the system has a good linearity.
关键词
低噪声放大器/可变增益/自偏置Key words
low noise amplifier/variable gain/self-biasing引用本文复制引用
基金项目
国家自然科学基金(61804046)
河南省科技攻关计划(232102211066)
出版年
2024
NETL
NSTL
万方数据