Broad-Band Monolithic Integrated Low Noise Amplifier

PENG Long-xin; LIN Jin-ting; WEI Tong-li

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Broad-Band Monolithic Integrated Low Noise Amplifier

更新时间：2025-07-16

- Broad-Band Monolithic Integrated Low Noise Amplifier
- Acta Electronica Sinica Vol. 32, Issue 11, Pages: 1933-1937(2004)
- 作者机构：
  
  1. 东南大学微电子中心,江苏,南京,210096
  2. 南京电子器件研究所,江苏,南京,210016
  3. 东南大学微电子中心江苏南京,210096
  4. 南京电子器件研究所江苏南京,210016
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN722.3
- Published：2004
- 稿件说明：
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PENG Long-xin, LIN Jin-ting, WEI Tong-li. Broad-Band Monolithic Integrated Low Noise Amplifier[J]. Acta Electronica Sinica, 2004, 32(11): 1933-1937.
DOI：

PENG Long-xin, LIN Jin-ting, WEI Tong-li. Broad-Band Monolithic Integrated Low Noise Amplifier[J]. Acta Electronica Sinica, 2004, 32(11): 1933-1937. DOI：

摘要

由电路和噪声基本定义出发

导出了二端口网络的噪声相关矩阵的转移表示式和导纳表示式.并推导了两个二端口网络的级联和并联后的噪声相关矩阵.然后在此基础上得出了并联反馈放大器的噪声参数(

min

和

opt

)和其

参数表达式.由此设计和制造了1~7GHz两级单片低噪声放大器.在工作频率1~7GHz内

测得增益

＞20dB

带内增益波动Δ

≤±0.75dB

噪声系数

≤2.5dB

输入输出驻波

VSWR

≤2.0

1分贝压缩点输出功率

1dB

≥15dBm.测试结果验证了设计的正确性.

Abstract

The noise correlation matrixes of cascade representation

impedance representation and conductance representation of a two-port network were derived from basic circuit and noise definitions.The noise correlation matrixes of two linked two-port networks were also gotten from basic definitions.Then the noise parameters and

parameters of a parallel feedback low noise amplifier were derived using these correlation matrixes.A 1~7 GHz two-stage MMIC LNA was designed on the basis of above formulas and fabricated using 0.5μm GaAs PHEMT processes.After measurement

it is found that from frequency 1.0 GHz to 7.0 GHz

the LNA achieves a power gain of 20 dB as well as a good flatness of only ±0.75 dB

a maximum noise figure of 2.5 dB

input and output VSWRs of better than

2.0 and the output

1dB

power of 15 dBm.The design is verified by the measurement results of the MMIC LNA.

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