| 一款用于超宽带接收系统的3 GHz-5 GHz低噪声放大器 |
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| 引用本文： | 李秀萍,曹佳云,李南.一款用于超宽带接收系统的3 GHz-5 GHz低噪声放大器[J].北京邮电大学学报,2015,38(2):108-112. |
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| 作者姓名： | 李秀萍 曹佳云 李南 |
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| 作者单位： | 北京邮电大学 电子工程学院,北京,100876 |
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| 基金项目： | 国家自然科学基金项目(61372036); 中央高校基本科研业务费,毫米波国家重点实验室开放课题经费(k201511)资助项目 |
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| 摘 要： | 设计了一种基于共源结构的两级级联超宽带低噪声放大器.该低噪声放大器采用了源端电感和四分之一阻抗变换器,在不恶化电路噪声系数的情况下具有较好的输入匹配.通过使用GaAs赝调制掺杂异质结场效应晶体管( pHEMT)器件,在PCB板上实现了低噪声放大器的加工,加工测试结果与原理图仿真结果基本符合.测试结果表明,该低噪声放大器的增益达到12±1.5 dB,最小噪声系数为1.8 dB,输入输出匹配结果良好.
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| 关 键 词： | 共源级联 输入匹配 低噪声放大器 噪声系数 |
| 收稿时间： | 2014-07-01 |
A 3 GHz-5 GHz Low Noise Amplifier for Ultra-Wideband Receiver System |
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| LI Xiu-ping,CAO Jia-yun,LI Nan.A 3 GHz-5 GHz Low Noise Amplifier for Ultra-Wideband Receiver System[J].Journal of Beijing University of Posts and Telecommunications,2015,38(2):108-112. |
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| Authors: | LI Xiu-ping CAO Jia-yun LI Nan |
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| Affiliation: | School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | A 3-5 GHz ultra-wideband (UWB) low noise amplifier based on common source (CS) with inductive-source and quarter-wave impedance convertor was proposed. The quarter-wavelength impedance convertor provides wideband input matching without noise figure (NF) degradation. The proposed UWB low noise amplifier was verified and implemented with packaged GaAs PHEMT device for 3.1-5 GHz UWB system. The measurement demonstrates a 12±1.5 dB in-band gain, a minimum NF of 1.8 dB. Good input and output matching are obtained. |
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| Keywords: | common source input matching low noise amplifier noise figure |
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