超高频频段LNA的平衡放大技术

2015 Fifth International Conference on Communication Systems and Network Technologies Pub Date : 2015-04-04 DOI:10.1109/CSNT.2015.125

Vinay Doki, S. Nandanwar, J. Thakkar

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引用次数: 4

摘要

本文介绍了一种410MHz低噪声放大器的设计与实现。采用由混合耦合器和放大器组成的平衡放大器结构实现了这种LNA。该方法具有电压驻波比好、线性度高、稳定性好等优点。在100MHz带宽下实现了1dB的噪声系数，平坦度为0.5 dB，输入输出回波损耗优于15db。本设计采用Advanced design Systems软件进行。LNA已在FR4衬底上实现，采用SiGe HBT (BFY640)和片式无源元件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Balanced Amplifier Technique for LNA in UHF Band

This paper describes the design and realization of a low noise amplifier (LNA) at 410MHz. A balanced amplifier structure which consists of hybrid coupler and amplifier has been used to realize this LNA. This approach gives the advantage of good voltage standing wave ratio, higher linearity and good stability. Noise figure of 1dB with a flatness of 0.5 dB and input-output return losses better than-15dB have been achieved over 100MHz bandwidth. The design is carried out with Advanced Design Systems software. LNA has been realized on FR4 substrate, using SiGe HBT (BFY640) and chip type passive components.

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2015 Fifth International Conference on Communication Systems and Network Technologies

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