| 基于AD9956的锁相参考源设计 |
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| 引用本文： | 温慎洁,钱澄. 基于AD9956的锁相参考源设计[J]. 现代雷达, 2007, 29(12): 90-93 |
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| 作者姓名： | 温慎洁 钱澄 |
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| 作者单位： | 东南大学毫米波国家重点实验室,南京,210096 |
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| 摘 要： | 宽带、细步进频综的设计是一项具有挑战性的课题。利用高性能直接数字合成器（DDS）驱动锁相环路，可以在很大程度上降低环路设计的难度，并实现普通模拟方法难以实现的宽带细步进性能。文中重点介绍了AD9956的参考源实现，通过测试结果分析了DDS杂散和相噪特性，提出了优化和改进的方法。
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| 关 键 词： | 直接数字合成 锁相环路 无寄生动态范围 相位噪声 |
| 收稿时间： | 2007-07-18 |
| 修稿时间： | 2007-11-06 |
PLL Reference Source Design Based on AD9956 |
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| WEN Shen-jie,QIAN Cheng. PLL Reference Source Design Based on AD9956[J]. Modern Radar, 2007, 29(12): 90-93 |
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| Authors: | WEN Shen-jie QIAN Cheng |
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| Abstract: | The design of wideband high resolution frequency synthesizer is challenging. A DDS-dfiven PLL would alleviate the complexity of the loop design, and in the mean time obtain a competitive performance compared to traditional analog methods. In this paper, the realization of the reference source is discussed in detail, where AD9956 DDS chip was presented and analyzed, optimization solutions were given for better spurious performance. |
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| Keywords: | DDS PLL SFDR phase noise |
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