宽带噪声图低噪声放大器设计为3.5-4.5 GHz

2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI) Pub Date : 2015-11-01 DOI:10.1109/KBEI.2015.7436111

Mojtaba Charchian, B. Zakeri, H. Miar-Naimi

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引用次数: 2

摘要

提出了一种3.5 ~ 4.5 GHz宽带噪声系数(NF)低噪声放大器(LNA)的设计方法。为了获得更好的噪声系数带宽，采用了质量因子法。为了设计低噪声的射频放大电路，必须考虑噪声系数、增益、稳定性和输入回波损耗之间的权衡。给出了两种放大器结构。第一种配置是单级放大器，其输入和输出匹配网络分别根据噪声和增益考虑。噪声系数为1.062db，增益为10.288db。第二种配置是级联放大器，除了第一种配置外，还使用了级间匹配网络。噪声系数为1.123db，增益为20.317db。采用安捷伦先进设计系统(ADS) EM/电路联合仿真进行仿真。

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Wideband noise figure low noise amplifier design for 3.5–4.5 GHz

This paper presents a method to design a wide-band noise figure (NF) low noise amplifier (LNA) for 3.5-4.5 GHz. The quality factor method has been used to achieve better bandwidth of noise figure. To design low noise amplifier circuit in Radio Frequency (RF), trade-off between noise figure, gain, stability and input return loss should be considered. Two configurations of amplifiers are presented. The first configuration is a single-stage amplifier with input and output matching networks according to noise and gain consideration respectively. It has the noise figure of 1.062db and the gain of 10.288db. The second configuration is a cascade amplifier that, in addition to the first one, an inter-stage matching network is used for it. It has the noise figure of 1.123db and the gain of 20.317db. Agilent Advanced Design System (ADS) EM/circuit co-simulation has been used to perform simulation.

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2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)

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