摘要
文中介绍一种低杂散、低相噪、快速捷变频频综源的实现途径。频综源采用直接数字频率合成(DDS)加倍频、混频方案。DDS采用4-FSK输出方式有效地缩短了频率捷变时间。通过测试验证了该设计方案的可行性。
A fast agile frequency synthesis source of low spurious and low phase noise is presented in the article. The scheme adopted in the source is Direct Digital Frequency Synthesis by frequency doubling and mixing. The time of frequency switch reduced greatly by adopting 4-FSK output mode with the DDS. The scheme was proved feasible by testing.
出处
《电子测量技术》
2006年第2期27-28,共2页
Electronic Measurement Technology
关键词
频综源
频率捷变
直接数字频率合成
frequency synthesis source, frequency agility, Direct Digital Frequency Synthesis （DDS）
