【作者】 周求湛； 焦剑晖； 李玉峰； 张新发； 徐建生； 戴逸松；

【Author】 Zhou Qiuzhan Jiao Jianhui Li Yufeng Zhang Xinfa Xu Jiansheng |Dai Yisong|(Information Department of Jilin University, Changchun 130025) (Thirteenth Research Institute of Information Industry Ministry, Shijiazhuang 050051)

【机构】 吉林大学南岭校区信息学院； 信息产业部电子第十三研究所；

【摘要】 MMIC放大器在微波通信等领域有着重要的应用。由于微波信号在传输过程中,不可避免的会被噪声和干扰所污染,到达接收端时的微波信号已相当微弱,所使用的接收微波放大器必须要在工作频段上具备较小的噪声。本文将讨论如何使用M—Lane方法（改进的Lane方法）,使用自行研制的精密阻抗变换器,得到MMIC放大器R_n—G_n噪声模型中包括最小噪声系数F_min在内的4个参数,实验结果证明该方法可以有效地提高RF系统的性能。更多还原

【Abstract】 MMIC amplifiers are very important in microwave communication and related fields. It is inevitable that signal power would be reduced by the noises and would be very weak when get to the terminals. Therefore, microwave amplifiers on the sinking side should be with low noise. This paper will discuss how to use the M-Lane’s method and extract the four parameters including the Fmin in the Rn-Gn noise model with a precision source-impendence tuner manufactured by us. The experimental results indicate that low noise design of the MMIC amplifiers is very significant for RF circuit and system performance.更多还原