FAST模型接收机中的本地振荡器

A Local Oscillator of a Demonstrative Model of the Receiver of the FAST

介绍了以国家半导体公司的LMX2306芯片为主要元件,构建的锁相环型振荡器。该设计具有电路简易,输出频率可由计算机实时控制,功耗小,输出稳定等优点。该振荡器用于FAST模型接收机,作为基带混频的本地振荡器。在观测实验中,证明该振荡器工作正常,性能稳定。

This paper presents a phase locked loop oscillator based on an LMX2306 chip of the National Semiconductor. The oscillator has many merits, such as convienience in assembling, real-time computer controlability, low-level power consumption, long-time operational stability, and flexibility in programming. The oscillator has been used in the receiver of the demonstrative model of the FAST as a local oscillator for the second down converter. Its performance has been proved by observational experiments with the demonstrative model.