本文分析了极低噪声参量放大器设计中,影响噪声的一些主要因素及其解决的途径。叙述了当泵源频率提高到50G Hz后,参放设计中需要考虑的一些主要问题及设计方法。提供了高泵频参放的一种结构模型和调整方法。给出了参放的实际调测结果和使用情况。 This article analyzes some of the major factors that affect noise in the design of very low noise parametric amplifiers and how to solve them. Describes the main issues and design methods that need to be considered in the parameter setting when the pump frequency is increased to 50G Hz. A high-frequency pump parameters of a structural model and adjustment methods. Gives the actual commissioning results and the use of the situation.