运用数字锁相频率合成的思想,以AD I公司生产的数字分频器和鉴相器ADF4113为核心,设计了频率范围在1.58 GHz~1.78 GHz的本振扫频源。重点阐述了系统的硬件实现,包括系统设计方案、主要电路单元设计以及系统测试结果等,并对该系统在实际调试过程中常见的问题进行了详细的分析。

Recuring to the idea of digital phase-locked frequency synthesizer.This paper gives a design of local sweeping oscillator at frequencies from 1.58 GHz to 1.78 GHz,which is based on the programmable frequency-divider and phase-detector of ADF4113,made by ADI corporation.The focus of this paper is the hardware implementation including system design,key unit circuit design and test result of the whole system.Meanwhile,some problems about the system while debugging are elaborated in detail.

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