基于DDS的快速跳頻源設(shè)計

在簡要介紹跳頻通信技術(shù)的發(fā)展概況及跳頻源合成主要方法的基礎(chǔ)上，針對目前普遍采用的DDS 技術(shù)，詳細(xì)分析了其輸出頻譜特性，并由此引出了基于DDS 的跳頻源設(shè)計方案，然后詳細(xì)分析了設(shè)計原理、實現(xiàn)的可行性以及軟件的設(shè)計和流程圖，同時對主要芯片的性能指標(biāo)及特點作了說明。此設(shè)計通過優(yōu)化，提高了各項性能指標(biāo)，對整體跳頻通信收發(fā)機的性能有了很大的提升。
關(guān)鍵詞：跳頻信號源 間接頻率合成 直接數(shù)字頻率合成
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