4.2.1偏置电路的考虑 34 4.2.2高增益模块2-dB增益台阶 37 4.3电阻衰减器 38 4.3.1衰减器增益… …38 4.3.2衰减器的噪声因子… ……… 41 4.4中间增益… 42 4.5完整的可变增益低噪声放大器… 44 第五章芯片设计和仿真结果… 47 5.1版图设计………“ …47 5.1.1低噪声放大器的版图设计…。 47 5.1.2电阻衰减器的版图设计… 49 5.1.3整体版图的布局… 51 52后仿真结果… 51 5.2.1最高增益低噪声放大器的仿真结果 … 51 5.2.2可变增益低噪声放大器的S11… 53 5.2.3可变增益低噪声放大器的增益… 54 5.2.4可变增益低噪声放大器的噪声系数… 55 5.2.5可变增益低噪声放大器的1P3…56 5.3设计小结…… 57 第六章总结与展望…59 6.1总结 。。。。。 59 6.2展望… 59 参考文献… 61 致谢… 694.2.1 偏置电路的考虑······················································ 34 4.2.2 高增益模块 2-dB 增益台阶 ········································ 37 4.3 电阻衰减器····································································· 38 4.3.1 衰减器增益···························································· 38 4.3.2 衰减器的噪声因子··················································· 41 4.4 中间增益········································································ 42 4.5 完整的可变增益低噪声放大器············································· 44 第五章 芯片设计和仿真结果 ·························································· 47 5.1 版图设计········································································ 47 5.1.1 低噪声放大器的版图设计·········································· 47 5.1.2 电阻衰减器的版图设计············································· 49 5.1.3 整体版图的布局······················································ 51 5.2 后仿真结果····································································· 51 5.2.1 最高增益低噪声放大器的仿真结果······························ 51 5.2.2 可变增益低噪声放大器的 S11 ····································· 53 5.2.3 可变增益低噪声放大器的增益···································· 54 5.2.4 可变增益低噪声放大器的噪声系数······························ 55 5.2.5 可变增益低噪声放大器的 IIP3 ···································· 56 5.3 设计小结········································································ 57 第六章 总结与展望 ······································································ 59 6.1 总结·············································································· 59 6.2 展望·············································································· 59 参考文献···················································································· 61 致谢·························································································· 69