电视调谐器宽带LNA的设计

2007 7th International Conference on ASIC Pub Date : 2007-10-01 DOI:10.1109/ICASIC.2007.4415712

Huang Shi-zhen, Z. Wen-long, Lin Wei

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摘要

介绍了一种用于电视调谐器的宽带LNA的设计。LNA采用两级结构实现输出阻抗匹配和增益的平衡。为了减小放大器的NF，采用消噪原理对噪声进行消噪。仿真结果表明，在工作带宽48 MHz~860 MHz范围内，增益为24 dB，噪声系数为3 dB，输入阻抗和输出阻抗匹配良好。

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Design of a broadband LNA for TV tuner

This paper described the design of a broadband LNA for TV tuner. The LNA uses two stage structures to achieve trade off of output impedance match and gain. In order to reduce the NF of the amplifier, noise canceling principle is adopted to cancel the noise. The simulation result shows that, in operation bandwidth 48 MHz~860 MHz, the gain is 24 dB, Noise figure is 3 dB, input impedance and output impedance match are also good.

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2007 7th International Conference on ASIC

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