基于DDS的快速跳频源设计

在简要介绍跳频通信技术的发展概况及跳频源合成主要方法的基础上，针对目前普遍采用的DDS 技术，详细分析了其输出频谱特性，并由此引出了基于DDS 的跳频源设计方案，然后详细分析了设计原理、实现的可行性以及软件的设计和流程图，同时对主要芯片的性能指标及特点作了说明。此设计通过优化，提高了各项性能指标，对整体跳频通信收发机的性能有了很大的提升。
关键词：跳频信号源 间接频率合成 直接数字频率合成
Abstract：The developing situation of frequency hopping communication technology and the main methods of frequency hopping synthesizers are introduced briefly. For the currently common used DDS technology，the characteristics of its output spectrum are analyzed in detail，then the design scheme based on DDS is put forward. The design principle，feasibility of implementation，and software flowchart are analyzed. In addition，the specification and features of the main chips are illustrated. The design is optimized to enhance performance indexes，thus to make the whole frequency hopping communication transceiver offering higher performance.
Keywords：Frequency hopping synthesizers Indirect frequency synthesis Direct digital frequency synthesis