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中文摘要：
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。
英文摘要：
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.
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