Random phasing in phased array antennas and dithering in DDS
In general, electronically switching digital phased shifters are used in phased arrays to steer the main-beam to a given direction. The corresponding desired phase distribution across the array can be approximated digitally. And the digital approximation causes the phase quantization errors. The effects of these errors on the phased array antennas are the formation of the parasite side-lobes and the deviation of the pointing direction for the main-beam of the array antenna. In the sixties of last century, several techniques were proposed to reduce the levels of the phase quantization side-lobes. Some of these techniques were analyzed and compared on their performances of the reduction of the parasite side-lobes 1. The improvement of the pointing accuracy achieved by using the modified versions of these techniques is presented in 2.
Mei WANG Wei JIANG ZhenGuo LIU YanChang GUO
Nanjing Research Institute of Electronics Technology, Nanjing 210013, China State Key Lab.Millimeter Waves, Southeast University, Nanjing 210096, China
国际会议
第九届国际天线、电波传播及电磁理论学术研讨会(ISAPE2010)
广州
英文
1-4
2010-11-29（万方平台首次上网日期，不代表论文的发表时间）