Title :
Spur reduction in truncation for DDS phase accumulators
Author :
Shaoyuan, Zhang ; Fuqiang, Yao ; Zhang Shuoao ; Yanming, Huang ; Yanchang, Guo ; Yongxiang, Liu
Author_Institution :
Inst. of Telecommun. Technique, China Electron. Equip. Syst. Eng. Inc., Nanjing, China
Abstract :
Direct digital synthesizer (DDS) is a new technique for frequency synthesis, which has the advantage of fine frequency resolution and fast switching speed, but has a high level of spurious frequencies. This paper mainly describes several methods for reducing the parasitic sidelobe level in phased arrays and uses them for randomizing; the phase errors to improve DDS under the condition of phase truncation. It can reduce the level of spurious frequencies and is a good attempt for application to DDS
Keywords :
antenna phased arrays; array signal processing; direct digital synthesis; DDS phase accumulators; array beamsteering; direct digital synthesizer; fast switching speed; fine frequency resolution; frequency synthesis; parasitic sidelobe level; phase errors; phase truncation; phased arrays; spurious frequency reduction; Electronic equipment; Frequency synthesizers; Phase noise; Phase shifters; Phased arrays; Quantization; Read only memory; Signal resolution; Signal synthesis; Systems engineering and theory;
Conference_Titel :
Radar, 2001 CIE International Conference on, Proceedings
Conference_Location :
Beijing
Print_ISBN :
0-7803-7000-7
DOI :
10.1109/ICR.2001.984652
