基于锁相环快速跳频源的设计

A Research of Fast Frequency Hopping Synthesizers based on PLL

简要介绍了跳频通信技术发展概况及其用到的关键技术,说明了锁相环的基本原理,介绍了组成部件的基本特点。然后从相位角度分析了锁相环环路模型,给出了相位传递函数;再分析环路带宽并推导了与其有关参数的关系式,从而推出加快频率锁定关键技术的原理。最后详细说明了实现快速跳频的原理,并以ADF 4193芯片为例作,对环路带宽的设计做了说明,并给出了测试结果。

The developing situation of Frequency hopping communication technical and its main technique are briefly introduced. Based on that, the main research content of frequency hopping synthesizers is brought forward. Then we briefly explain the basic theory of Phase Locked Loop （PLL） and the basic characteristic of its components＇ Following that, from the phase point of view, we analysis the loop model of PLL and the phase transfer functions we also deduce the connection between the loop bandwidth and other parameters. At last, we taking the ADF4193 as an example explain the realization method of Fast Frequency Hopping Synthesizers in details, and the test results is given out.