| 摘要: |
| 提出了一种新颖的直接频率合成器方案，实现了优于3 μs的捷变频指标。采用直接数字频率合成器（DDS
）实现细步进跳频，通过切换混频本振、分段开关滤波、直接倍频方式
拓展输出带宽。分析了关键指标和技术难点，给出了解决措施。该频率合成器实测结果满足指标要求，具
有工程应用价值。 |
| 关键词: 频率合成器 捷变频 直接数字频率合成器 |
| DOI： |
|
| 基金项目: |
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| Design of a Novel Agile Frequency Synthesizer |
| WANG Li-sheng |
| (Chengdu Spaceon Electronics Co.,Ltd., Chengdu 611731,China) |
| Abstract: |
| A novel agile frequency synthesizer is presented,which achieves better
than 3μs agile frequency characteristics.DDS (Direct Digital Synthesizer) is used t
o achieve fine step frequency hopping and the bandwidth is expanded by switching local o
scillator of mixer, selecting switch filter, and direct frequency doubling. The key characteristics and technical difficulties are analysed and solutions are given.The
measured results meet the specification requirement.The designed synthesizer has an applicable value in engineering. |
| Key words: frequency synthesizer frequency agility direct digital synthesizer(DDS) |
《电讯技术》编辑部 