一种低相位噪声频标分配放大器的设计实现

随着测控试验系统对低相位噪声频标指标要求的不断提高,国内市场上的绝大部分相关产品已无法满足要求。本文给出一种低相位噪声频标分配放大器的设计实例,实例采用基于MAX4104增益放大和LMH6609分配放大的2级放大电路结构,充分利用MAX4104的低相位噪声放大特性和LMH6609的大电流驱动分配特性,同时采用先进的PCB（印制电路板）设计技术和有效的电路噪声抑制手段,实现了频标的低相位噪声分配放大输出。最后对实例设计进行了验证分析。本设计相关产品已广泛应用于卫星地面测控系统的时频分系统中,实践证明设计指标满足航天测控和武器试验用户的要求。

Design and Implementation of a Low Phase Noise Frequency Reference Distribution Amplifier

Most frequency reference distribution amplification products in the domestic market don’t meet requirements of the space TT&C systems on low phase noise specifications.This paper presents design of a low phase noise frequency reference distribution amplifier based on a two-level amplifier circuit structure using MAX4104 as a low phase noise gain amplifier and using LMH6609 as a strong driver distribution amplifier.In addition,advanced PCB design technology and effective noise suppression measures are used to get low phase noise frequency output from the distribution amplifier.Finally,validation of the design is given.Products of the design have already been successfully used in the frequency and time subsystems of satellite ground control systems and engineering applications show that the design meets the requirements of space TT&C systems and weaponry test systems.