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《Radio Engineering of China》 2006-01
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Study of the LFM Waveforms Generator Based on DDS

HUO Zhi-yong~1,ZHANG Jun~2 (1. Xidian Univ., Xi'an Shanxi 710071,China; 2. The 54th Research Institute of CETC, Shijiazhuang Hebei 050081,China)  
This paper introduces the principle to generate the linear FM signal, and then discusses the distribution and the restraint methods of the DDS spurs. It also compares the direct digital synthesis technique and the stored digital waveform direct reading technique. Depending on the theoretical analysis, the author has implemented a wide band LFM signal generator according to the scheme of direct digital synthesis and orthogonal modulation.
【CateGory Index】: TN741
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