A Novel Analog and Digital Weighting Approach for Sum and Difference Beam of Planar Array at Subarray Level  

作　　者：HU Hang LIU Weihui 

机构地区：[1]School of Electronics and Information Technology, Harbin Institute of Technology, Harbin 150001, China

出　　处：《Chinese Journal of Electronics》2010年第3期468-472,共5页电子学报（英文版）

基　　金：This work is supported by the China Postdoctoral Science Foundation Funded Project （No.20080430905）, the China Postdoctoral Science Foundation Funded Project （No.200902412）, the Aeronautical Science Founda- tion of China （No.20092077010）, and the Spaceflight Support Foundation of China （2008）.

摘　　要：Aim at planar array radar, this paper investigated an approach which only applies one kind of analog weighting at element level to suppress sldelobes of sum and difference beam simultaneously. Consequently, sum and difference channels were constructed, and the analog weights were determined by making optimal adaptive filtering for the supposed interferences within the sidelobe area. In order to improve sidelobe suppression effect, digital weighting at subarray level was adopted, which was used to approximate the patterns obtained by the Taylor or Bayliss weight. The proposed approach reduces the hardware cost and complexity. Simulation results demonstrate its validity.

关 键 词：Planar phased array Analog weighting Digital weighting at subarray level Sidelobe suppression. 

分 类 号：TN911.72[电子电信—通信与信息系统] O151.21[电子电信—信息与通信工程]