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基于DDS和DQUC的宽带多普勒频率模拟器的设计
Design of Broadband Doppler Frequency Simulator Based on DDS and DQUC Techniques
【摘要】 介绍了直接数字频率合成(DDS)和直接正交上变频(DQUC)的基本原理,提出了基于DDS和DQUC的宽带多普勒频率模拟器设计方案,该方案在微波频段保持了DDS的所有优点,并抑制了在混频器中上变频时双边带中的无用边带。最后,介绍了基于AD9854和AD8346的直接正交上变频器优化设计的具体措施,并给出了实验结果。
【Abstract】 The paper introduces the basic principles of direct digital synthesis(DDS) and direct quadrature up-conversion(DQUC).The realization method of a broadband Doppler frequency simulator based on DDS and DQUC Techniques is proposed,which has all advantages of DDS and offers an economic approach to frequency up-conversion.At last,the paper introduces several practical measures for direct quadrature up-converter optimization based on AD9854 and AD8346,and the experiment results are presented.
【关键词】 雷达目标模拟器;
直接数字频率合成;
多普勒频率;
直接正交上变频;
【Key words】 radar target simulator; direct digital synthesis; doppler frequency; direct quadrature up-conversion;
【Key words】 radar target simulator; direct digital synthesis; doppler frequency; direct quadrature up-conversion;
- 【文献出处】 现代雷达 ,Modern Radar , 编辑部邮箱 ,2006年02期
- 【分类号】TN955
- 【被引频次】2
- 【下载频次】173