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| 抑制DDS相位舍位杂散的一种新方法 | |
| 引用本文： | 张少元,郭燕昌,张锁敖,柳永祥. 抑制DDS相位舍位杂散的一种新方法[J]. 现代雷达, 2001, 23(4): 55-58 |
| 作者姓名： | 张少元 郭燕昌 张锁敖 柳永祥 |
| 作者单位： | 1. 解放军理工大学通信工程学院 2. 南京电子技术研究所 3. 总参第63研究所 |
| 摘 要： | 直接数字式频率合成器(DDS)是最新的频率合成技术,它具有分辨率高,频率转换速度快等优点,但是杂散分量丰富.本文旨在介绍相控阵天线抑制旁瓣的几种方法,并利用其中的随机相位馈相法来处理相位舍位条件下的DDS,从而降低杂散电平. |
| 关 键 词： | 直接数字频率合成 相控阵天线 旁瓣 相位舍位 杂散 |
| 修稿时间： | 2000-11-06 |
A Novel Method for Reducing the Spurious Signal in the Truncation of the PhaseAccumulator Bits |
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| ZHANG Shao-yuan GUO Yan-chang ZHANG Shuo-ao LIU Yong-xiang. A Novel Method for Reducing the Spurious Signal in the Truncation of the PhaseAccumulator Bits[J]. Modern Radar, 2001, 23(4): 55-58 | |
| Authors: | ZHANG Shao-yuan GUO Yan-chang ZHANG Shuo-ao LIU Yong-xiang |
| Affiliation: | ZHANG Shao-yuan 1 GUO Yan-chang 2 ZHANG Shuo-ao 3 LIU Yong-xiang 3(1.ICE.PLA University of Science and Technology Nanjing 210016)(2.Nanjing Research Institute of Electronics Technology Nanjing 210013)(3.The 63rd Research Institute of PLA General |
| Abstract: | Direct digital synthesizer (DDS) is the latest technique for frequency synthesis, which has the advantage of fine frequency resolution and fast switching speed, but it has a high level of spurious frequencies. This paper mainly presents several methods in reducing the parasitic sidelobe level in phased arrays, and uses a method for randomizing the phase errors to improve DDS on the condition of a phase truncation. This method can reduce the level of spurious frequencies, and is a good attempt on the application of DDS. |
| Keywords: | direct digital synthesizer phased arrays sidelobe phase truncation spurious signal |
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