本文介绍一种适用于微波辐射计的小型21厘米微波低噪声集成组件,它的工作方块图如图1所示. 按微波辐射计整机性能,要求该高频组件增益为30分贝,噪声系数不大于2.5分贝.除电性能外,还要求组件体积小、重量轻.为此,放大器采用两只两级 This article describes a suitable microwave radiometer small 21 cm microwave low noise integrated components, its working block diagram shown in Figure 1. According to the whole performance of the microwave radiometer, the high frequency components required gain of 30 dB, the noise figure Not more than 2.5 dB. In addition to electrical performance, but also requires small components, light weight.To this end, the amplifier uses two two