The impedance matching design is briefly introduced. 介紹了阻抗匹配設計原理。
The performance of impedance matching and noise figure of the LNA is analyzed, and then the improving techniques for cascode structure are also developed. 從阻抗匹配及雜訊優化的角度分析了電路的性能，提出了相應的優化設計方法。
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